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c6bf6d1897
Existing benchtests for malloc infrastructure seem to be rather generic to test global malloc implementation performance. This new benchtest focus on reducing any non tcache related side effects, allowing to more realistically predict performance impacts of tcache code changes. The test was inpired in bench-[cm]alloc-thread code, with severe simplifications: - forces single thread execution, reducing concurrency side-effects, like cache incoherence penalties due simultaneous writes to the same cache pages; - Focus on allocating and deallocating a single size for all the duration of the benchmark. Since all it does is allocate and deallocate, it will measure the tcache hotpath without any side-effects. - Allows to specify the allocation size as input argument. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
23 lines
927 B
C
23 lines
927 B
C
/* Benchmark calloc and free functions.
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Copyright (C) 2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#define TEST_FUNC(size) calloc (1, size)
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#define TEST_NAME "calloc"
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#include "bench-malloc-tcache.c"
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