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| author | Konstantin Khlebnikov <koct9i@gmail.com> | 2014-10-10 02:29:34 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-10 06:26:01 +0400 |
| commit | 0085d61fe05ec5a3739afb8ffb8a88130402633e (patch) | |
| tree | c5f40ee2e8b51ca1eb723102e97319bc55ad6727 /tools/testing/selftests/vm/Makefile | |
| parent | 09316c09dde33aae14f34489d9e3d243ec0d5938 (diff) | |
| download | linux-0085d61fe05ec5a3739afb8ffb8a88130402633e.tar.xz | |
selftests/vm/transhuge-stress: stress test for memory compaction
This tool induces memory fragmentation via sequential allocation of
transparent huge pages and splitting off everything except their last
sub-pages. It easily generates pressure to the memory compaction code.
$ perf stat -e 'compaction:*' -e 'migrate:*' ./transhuge-stress
transhuge-stress: allocate 7858 transhuge pages, using 15716 MiB virtual memory and 61 MiB of ram
transhuge-stress: 1.653 s/loop, 0.210 ms/page, 9504.828 MiB/s 7858 succeed, 0 failed, 2439 different pages
transhuge-stress: 1.537 s/loop, 0.196 ms/page, 10226.227 MiB/s 7858 succeed, 0 failed, 2364 different pages
transhuge-stress: 1.658 s/loop, 0.211 ms/page, 9479.215 MiB/s 7858 succeed, 0 failed, 2179 different pages
transhuge-stress: 1.617 s/loop, 0.206 ms/page, 9716.992 MiB/s 7858 succeed, 0 failed, 2421 different pages
^C./transhuge-stress: Interrupt
Performance counter stats for './transhuge-stress':
1.744.051 compaction:mm_compaction_isolate_migratepages
1.014 compaction:mm_compaction_isolate_freepages
1.744.051 compaction:mm_compaction_migratepages
1.647 compaction:mm_compaction_begin
1.647 compaction:mm_compaction_end
1.744.051 migrate:mm_migrate_pages
0 migrate:mm_numa_migrate_ratelimit
7,964696835 seconds time elapsed
Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/vm/Makefile')
| -rw-r--r-- | tools/testing/selftests/vm/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile index 3f94e1afd6cf..4c4b1f631ecf 100644 --- a/tools/testing/selftests/vm/Makefile +++ b/tools/testing/selftests/vm/Makefile @@ -3,6 +3,7 @@ CC = $(CROSS_COMPILE)gcc CFLAGS = -Wall BINARIES = hugepage-mmap hugepage-shm map_hugetlb thuge-gen hugetlbfstest +BINARIES += transhuge-stress all: $(BINARIES) %: %.c |