The patch titled
Subject: kselftests: memcg: speed up the memory.high test
has been added to the -mm tree. Its filename is
kselftests-memcg-speed-up-the-memoryhigh-test.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/kselftests-memcg-speed-up-the-memoryhigh-test.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/kselftests-memcg-speed-up-the-memoryhigh-test.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Subject: kselftests: memcg: speed up the memory.high test
After commit 0e4b01df8659 ("mm, memcg: throttle allocators when failing
reclaim over memory.high") allocating memory over memory.high became very
time consuming. But it's exactly what the memory.high test from cgroup
kselftests is doing: it tries to allocate 100M with 30M memory.high value.
It takes forever to complete.
In order to keep it passing (or failing) in a reasonable amount of time
let's try to allocate only a little over 30M: 31M to be precise.
With this change test_memcontrol finishes in a reasonable amount of
time:
$ time ./test_memcontrol
ok 1 test_memcg_subtree_control
ok 2 test_memcg_current
ok 3 test_memcg_min
ok 4 test_memcg_low
ok 5 test_memcg_high
ok 6 test_memcg_max
ok 7 test_memcg_oom_events
ok 8 test_memcg_swap_max
ok 9 test_memcg_sock
ok 10 test_memcg_oom_group_leaf_events
ok 11 test_memcg_oom_group_parent_events
ok 12 test_memcg_oom_group_score_events
real 0m2.273s
user 0m0.064s
sys 0m0.739s
Link: https://lkml.kernel.org/r/20220415000133.3955987-3-roman.gushchin@xxxxxxxxx
Signed-off-by: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Reviewed-by: David Vernet <void@xxxxxxxxxxxxx>
Cc: Chris Down <chris@xxxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Zefan Li <lizefan.x@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/cgroup/test_memcontrol.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/testing/selftests/cgroup/test_memcontrol.c~kselftests-memcg-speed-up-the-memoryhigh-test
+++ a/tools/testing/selftests/cgroup/test_memcontrol.c
@@ -607,7 +607,7 @@ static int test_memcg_high(const char *r
if (cg_write(memcg, "memory.high", "30M"))
goto cleanup;
- if (cg_run(memcg, alloc_anon, (void *)MB(100)))
+ if (cg_run(memcg, alloc_anon, (void *)MB(31)))
goto cleanup;
if (!cg_run(memcg, alloc_pagecache_50M_check, NULL))
_
Patches currently in -mm which might be from roman.gushchin@xxxxxxxxx are
kselftests-memcg-update-the-oom-group-leaf-events-test.patch
kselftests-memcg-speed-up-the-memoryhigh-test.patch
maintainers-add-corresponding-kselftests-to-cgroup-entry.patch
maintainers-add-corresponding-kselftests-to-memcg-entry.patch
mm-do-not-call-add_nr_deferred-with-zero-deferred.patch
