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radix tree test suite: benchmark for iterator

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This adds simple benchmark for iterator similar to one I've used for
commit 78c1d78488 ("radix-tree: introduce bit-optimized iterator")

Building with make BENCHMARK=1 set radix tree order to 6, this allows to
get performance comparable to in kernel performance.

Link: http://lkml.kernel.org/r/1480369871-5271-43-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Konstantin Khlebnikov 2016-12-14 15:08:14 -08:00 • committed by Linus Torvalds
parent ba20cd60c9
commit cfa40bcfd6
5 changed files with 110 additions and 1 deletions
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2
tools/testing/radix-tree/main.c
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@ -352,6 +352,8 @@ int main(int argc, char **argv)
/* Free any remaining preallocated nodes */
radix_tree_cpu_dead(0);
benchmark();
sleep(1);
printf("after sleep(1): %d allocated, preempt %d\n",
nr_allocated, preempt_count);