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[WIP] Postpone freeing a tracker entry, add a ref count #1270

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@ldorau ldorau commented Apr 15, 2025 •
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Description

Postpone freeing a tracker entry until it is really removed from the tracker.

Ref: #1233

Checklist

  • Code compiles without errors locally
  • All tests pass locally
  • CI workflows execute properly

@ldorau ldorau changed the title Postpone freeing a tracker entry until it is really removed from tracker Postpone freeing a tracker entry until it is really removed from the tracker Apr 15, 2025
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Compute Benchmarks run (with params: --compare 'Baseline_PVC'):
https://github.com/oneapi-src/unified-memory-framework/actions/runs/14473372398

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Compute Benchmarks run ( --compare 'Baseline_PVC'):
https://github.com/oneapi-src/unified-memory-framework/actions/runs/14473372398
Job status: failure. Test status: failure.

Summary

(Emphasized values are the best results)

Improved 40 (threshold 2.00%)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 proxy_pool<fixed_provider> 1796.990000 ns 4972.830 ns 176.73%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 fixed_provider 1174.930000 ns 2564.380 ns 118.26%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 disjoint_pool<os_provider> 318.467000 ns 647.568 ns 103.34%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 umfProxy 1508.560000 ns 3025.960 ns 100.59%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 jemalloc_pool<os_provider> 395.143000 ns 767.476 ns 94.23%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 umfProxy 12691.600000 ns 24625.100 ns 94.03%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 tbbProxy 323.984000 ns 624.879 ns 92.87%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 umfProxy 1582.200000 ns 3037.880 ns 92.00%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 jemalloc_pool<os_provider> 625.572000 ns 1194.930 ns 91.01%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 umfProxy 1674.610000 ns 3150.710 ns 88.15%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 glibc 450.721000 ns 838.137 ns 85.95%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 umfProxy 13023.400000 ns 24169.300 ns 85.58%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 disjoint_pool<os_provider> 5798.090000 ns 10613.300 ns 83.05%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 jemalloc_pool<os_provider> 417.284000 ns 762.820 ns 82.81%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 jemalloc_pool<os_provider> 656.280000 ns 1197.650 ns 82.49%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 umfProxy 14085.800000 ns 24818.100 ns 76.19%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 scalable_pool<os_provider> 313.102000 ns 539.665 ns 72.36%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 tbbProxy 330.768000 ns 568.249 ns 71.80%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 disjoint_pool<os_provider> 2655.420000 ns 4540.970 ns 71.01%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 scalable_pool<os_provider> 340.066000 ns 580.669 ns 70.75%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 tbbProxy 371.110000 ns 632.053 ns 70.31%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 glibc 504.080000 ns 852.465 ns 69.11%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 glibc 222.220000 ns 365.370 ns 64.42%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 proxy_pool<os_provider> 17325.100000 ns 28297.400 ns 63.33%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 scalable_pool<os_provider> 367.259000 ns 599.047 ns 63.11%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 tbbProxy 365.715000 ns 591.936 ns 61.86%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 os_provider 16056.600000 ns 25706.600 ns 60.10%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 tbbProxy 210.554000 ns 334.039 ns 58.65%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 tbbProxy 221.357000 ns 350.589 ns 58.38%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 jemalloc_pool<os_provider> 1040.670000 ns 1637.570 ns 57.36%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 glibc 181.914000 ns 282.643 ns 55.37%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 disjoint_pool<os_provider> 23592.200000 ns 36260.200 ns 53.70%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 scalable_pool<os_provider> 221.747000 ns 340.160 ns 53.40%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 scalable_pool<os_provider> 355.287000 ns 543.490 ns 52.97%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 scalable_pool<os_provider> 238.835000 ns 360.015 ns 50.74%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 jemalloc_pool<os_provider> 1121.910000 ns 1670.930 ns 48.94%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 glibc 135.488000 ns 170.436 ns 25.79%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 jemalloc 159.699000 ns 199.856 ns 25.15%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 jemalloc 172.138000 ns 204.384 ns 18.73%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 glibc 149.274000 ns 172.393 ns 15.49%
Regressed 6 (threshold 2.00%)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 disjoint_pool<os_provider> 4677.440 ns 752.146000 ns -83.92%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 jemalloc 196.851 ns 88.994000 ns -54.79%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 jemalloc 189.812 ns 88.265900 ns -53.50%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 jemalloc 101.247 ns 64.327600 ns -36.46%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 jemalloc 95.715 ns 63.410600 ns -33.75%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 disjoint_pool<os_provider> 35133.300 ns 30418.400000 ns -13.42%

Performance change in benchmark groups

UMF
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 (7)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 tbbProxy 323.984000 ns 624.879 ns 92.87%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 umfProxy 1582.200000 ns 3037.880 ns 92.00%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 scalable_pool<os_provider> 313.102000 ns 539.665 ns 72.36%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 jemalloc_pool<os_provider> 1040.670000 ns 1637.570 ns 57.36%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 glibc 181.914000 ns 282.643 ns 55.37%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 jemalloc 189.812 ns 88.265900 ns -53.50%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 disjoint_pool<os_provider> 4677.440 ns 752.146000 ns -83.92%
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 (7)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 umfProxy 12691.600000 ns 24625.100 ns 94.03%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 tbbProxy 371.110000 ns 632.053 ns 70.31%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 glibc 222.220000 ns 365.370 ns 64.42%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 scalable_pool<os_provider> 355.287000 ns 543.490 ns 52.97%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 jemalloc_pool<os_provider> 1121.910000 ns 1670.930 ns 48.94%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 disjoint_pool<os_provider> 35133.300 ns 30418.400000 ns -13.42%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 jemalloc 196.851 ns 88.994000 ns -54.79%
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 (7)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 jemalloc_pool<os_provider> 625.572000 ns 1194.930 ns 91.01%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 umfProxy 1674.610000 ns 3150.710 ns 88.15%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 glibc 450.721000 ns 838.137 ns 85.95%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 tbbProxy 330.768000 ns 568.249 ns 71.80%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 disjoint_pool<os_provider> 2655.420000 ns 4540.970 ns 71.01%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 scalable_pool<os_provider> 340.066000 ns 580.669 ns 70.75%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 jemalloc 159.699000 ns 199.856 ns 25.15%
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 (7)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 jemalloc_pool<os_provider> 656.280000 ns 1197.650 ns 82.49%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 umfProxy 14085.800000 ns 24818.100 ns 76.19%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 glibc 504.080000 ns 852.465 ns 69.11%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 scalable_pool<os_provider> 367.259000 ns 599.047 ns 63.11%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 tbbProxy 365.715000 ns 591.936 ns 61.86%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 disjoint_pool<os_provider> 23592.200000 ns 36260.200 ns 53.70%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 jemalloc 172.138000 ns 204.384 ns 18.73%
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 (7)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 disjoint_pool<os_provider> 318.467000 ns 647.568 ns 103.34%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 umfProxy 1508.560000 ns 3025.960 ns 100.59%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 jemalloc_pool<os_provider> 395.143000 ns 767.476 ns 94.23%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 tbbProxy 210.554000 ns 334.039 ns 58.65%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 scalable_pool<os_provider> 221.747000 ns 340.160 ns 53.40%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 glibc 135.488000 ns 170.436 ns 25.79%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 jemalloc 95.715 ns 63.410600 ns -33.75%
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 (7)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 umfProxy 13023.400000 ns 24169.300 ns 85.58%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 disjoint_pool<os_provider> 5798.090000 ns 10613.300 ns 83.05%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 jemalloc_pool<os_provider> 417.284000 ns 762.820 ns 82.81%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 tbbProxy 221.357000 ns 350.589 ns 58.38%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 scalable_pool<os_provider> 238.835000 ns 360.015 ns 50.74%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 glibc 149.274000 ns 172.393 ns 15.49%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 jemalloc 101.247 ns 64.327600 ns -36.46%
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 (4)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 proxy_pool<fixed_provider> 1796.990000 ns 4972.830 ns 176.73%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 fixed_provider 1174.930000 ns 2564.380 ns 118.26%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 proxy_pool<os_provider> 17325.100000 ns 28297.400 ns 63.33%
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 os_provider 16056.600000 ns 25706.600 ns 60.10%
Relative perf in group FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 (4)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 proxy_pool<os_provider> 0.000000 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 os_provider 0.000000 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 proxy_pool<fixed_provider> 0.000000 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:50000/threads:1 fixed_provider 0.000000 % -
Relative perf in group FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 disjoint_pool<os_provider> 0.064949 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 jemalloc_pool<os_provider> 30.607300 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 scalable_pool<os_provider> 60.801600 % -
Relative perf in group FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 disjoint_pool<os_provider> 0.016245 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 jemalloc_pool<os_provider> 30.589100 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 scalable_pool<os_provider> 55.478400 % -
Relative perf in group FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 disjoint_pool<os_provider> 26.002600 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 jemalloc_pool<os_provider> 64.508100 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 scalable_pool<os_provider> 62.411100 % -
Relative perf in group FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 disjoint_pool<os_provider> 25.507300 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 jemalloc_pool<os_provider> 60.786800 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 scalable_pool<os_provider> 54.893400 % -
Relative perf in group FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 disjoint_pool<os_provider> 23.636700 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 jemalloc_pool<os_provider> 85.085300 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 scalable_pool<os_provider> 85.085300 % -
Relative perf in group FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 disjoint_pool<os_provider> 20.038400 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 jemalloc_pool<os_provider> 84.818400 % -
FRAGMENTATION_multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 scalable_pool<os_provider> 88.068200 % -
Relative perf in group peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 (7)
Benchmark This PR Baseline_PVC Change
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 glibc 185.427000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 disjoint_pool<os_provider> 4683.950000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 jemalloc_pool<os_provider> 1012.640000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 scalable_pool<os_provider> 317.499000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 umfProxy 1599.570000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 jemalloc 193.304000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 tbbProxy 326.985000 ns -
Relative perf in group peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 (7)
Benchmark This PR Baseline_PVC Change
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 glibc 230.601000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 disjoint_pool<os_provider> 35481.000000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 jemalloc_pool<os_provider> 1152.200000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 scalable_pool<os_provider> 387.822000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 umfProxy 12994.000000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 jemalloc 204.267000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 tbbProxy 389.277000 ns -
Relative perf in group peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 (7)
Benchmark This PR Baseline_PVC Change
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 glibc 450.370000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 disjoint_pool<os_provider> 2627.180000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 jemalloc_pool<os_provider> 622.544000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 scalable_pool<os_provider> 329.937000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 umfProxy 1645.940000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 jemalloc 158.885000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 tbbProxy 326.537000 ns -
Relative perf in group peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 (7)
Benchmark This PR Baseline_PVC Change
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 glibc 508.403000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 disjoint_pool<os_provider> 24059.100000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 jemalloc_pool<os_provider> 669.748000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 scalable_pool<os_provider> 382.320000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 umfProxy 13026.500000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 jemalloc 167.881000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 tbbProxy 360.961000 ns -
Relative perf in group peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 (7)
Benchmark This PR Baseline_PVC Change
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 glibc 136.707000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 disjoint_pool<os_provider> 325.845000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 jemalloc_pool<os_provider> 388.318000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 scalable_pool<os_provider> 217.319000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 umfProxy 1510.160000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 jemalloc 92.599300 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 tbbProxy 206.031000 ns -
Relative perf in group peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 (7)
Benchmark This PR Baseline_PVC Change
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 glibc 146.831000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 disjoint_pool<os_provider> 6542.910000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 jemalloc_pool<os_provider> 413.041000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 scalable_pool<os_provider> 227.619000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 umfProxy 12405.600000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 jemalloc 104.040000 ns -
peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 tbbProxy 223.409000 ns -
Relative perf in group FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 disjoint_pool<os_provider> 50.000000 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 jemalloc_pool<os_provider> 99.990400 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:1 scalable_pool<os_provider> 99.960900 % -
Relative perf in group FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 disjoint_pool<os_provider> 20.000000 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 jemalloc_pool<os_provider> 99.990300 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:4 scalable_pool<os_provider> 99.962800 % -
Relative perf in group FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 disjoint_pool<os_provider> 97.184200 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 jemalloc_pool<os_provider> 99.992500 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:1 scalable_pool<os_provider> 99.989800 % -
Relative perf in group FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 disjoint_pool<os_provider> 90.346000 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 jemalloc_pool<os_provider> 99.991800 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:4 scalable_pool<os_provider> 99.987700 % -
Relative perf in group FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 disjoint_pool<os_provider> 99.536100 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 jemalloc_pool<os_provider> 99.996800 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:1 scalable_pool<os_provider> 99.992800 % -
Relative perf in group FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 (3)
Benchmark This PR Baseline_PVC Change
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 disjoint_pool<os_provider> 98.763000 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 jemalloc_pool<os_provider> 99.996800 % -
FRAGMENTATION_peak_alloc/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:4 scalable_pool<os_provider> 99.994200 % -
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:8 (6)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:8 glibc - 366.197000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:8 jemalloc_pool<os_provider> - 1672.840000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:8 scalable_pool<os_provider> - 549.361000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:8 umfProxy - 53569.500000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:8 jemalloc - 89.618300 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:8 tbbProxy - 632.770000 ns
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:12 (6)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:12 glibc - 366.670000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:12 jemalloc_pool<os_provider> - 1674.080000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:12 scalable_pool<os_provider> - 544.330000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:12 umfProxy - 78951.900000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:12 jemalloc - 89.786300 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/size:4096/iterations:500000/threads:12 tbbProxy - 638.970000 ns
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:8 (6)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:8 glibc - 845.858000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:8 jemalloc_pool<os_provider> - 1198.180000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:8 scalable_pool<os_provider> - 597.241000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:8 umfProxy - 53934.300000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:8 jemalloc - 204.593000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:8 tbbProxy - 584.623000 ns
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:12 (6)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:12 glibc - 855.042000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:12 jemalloc_pool<os_provider> - 1202.610000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:12 scalable_pool<os_provider> - 603.377000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:12 umfProxy - 79284.100000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:12 jemalloc - 203.389000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:4096/granularity:8/iterations:500000/threads:12 tbbProxy - 594.468000 ns
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:8 (6)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:8 glibc - 173.740000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:8 jemalloc_pool<os_provider> - 764.419000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:8 scalable_pool<os_provider> - 362.542000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:8 umfProxy - 53422.200000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:8 jemalloc - 64.340700 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:8 tbbProxy - 352.649000 ns
Relative perf in group multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:12 (6)
Benchmark This PR Baseline_PVC Change
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:12 glibc - 173.294000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:12 jemalloc_pool<os_provider> - 763.153000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:12 scalable_pool<os_provider> - 359.356000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:12 umfProxy - 78621.600000 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:12 jemalloc - 64.383900 ns
multiple_malloc_free/max_allocs:10000/thread_local_allocations:1/min_size:8/max_size:128/granularity:8/iterations:500000/threads:12 tbbProxy - 354.263000 ns

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ldorau commented Apr 15, 2025 •
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"Exception: The directory /home/test-user/bench_workdir_umf exists but is not a benchmark work directory."
See: https://github.com/oneapi-src/unified-memory-framework/actions/runs/14473372398/job/40592824780
@lplewa @lukaszstolarczuk Could you fix it?

@ldorau ldorau force-pushed the Postpone_freeing_a_tracker_entry_until_it_is_really_removed_from_tracker branch 3 times, most recently from 34c1ad5 to c23a254 Compare April 17, 2025 07:02
@ldorau ldorau force-pushed the Postpone_freeing_a_tracker_entry_until_it_is_really_removed_from_tracker branch from c23a254 to fa661de Compare April 17, 2025 12:53
@ldorau ldorau changed the title Postpone freeing a tracker entry until it is really removed from the tracker [WIP] Postpone freeing a tracker entry, add a ref count Apr 17, 2025
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ldorau commented Apr 17, 2025 •
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The last commit accde78 is not finished yet !

@ldorau ldorau force-pushed the Postpone_freeing_a_tracker_entry_until_it_is_really_removed_from_tracker branch from fa661de to accde78 Compare April 17, 2025 12:57
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What is the purpose of this PR, could you please describe the scenario and how these changes help?

@lplewa
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lplewa commented Apr 18, 2025 •
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What is the purpose of this PR, could you please describe the scenario and how these changes help?

We have a race, between insert and delete of entry in tracker

image
Top screen in thread one, bottom screen is thread two. Numbers shows order of the operations.

@vinser52
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But how is it possible that one thread has some pointer which belongs to the entry in the memory tracker and another thread removes that entry from the tracker? The first thing that came to my mind is the following:

  1. T1 allocates memory, and the corresponding region is put into the tracker
  2. T2 frees the memory allocated by T1, and the corresponding region is removed from the tracker
  3. T1 is still trying to use the memory which is already been freed by T2.

But it is an ill-formed client's code. What is the real scenario?

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@ldorau @vinser52 @lplewa