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linux/tools/testing/selftests
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John Hubbard 1100262037 selftests/vm: 8x compaction_test speedup 
This patch reduces the running time for compaction_test from about 27 sec,
to 3.3 sec, which is about an 8x speedup.

These numbers are for an Intel x86_64 system with 32 GB of DRAM.

The compaction_test.c program was spending most of its time doing mmap(),
1 MB at a time, on about 25 GB of memory.

Instead, do the mmaps 100 MB at a time.  (Going past 100 MB doesn't make
things go much faster, because other parts of the program are using the
remaining time.)

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Sri Jayaramappa <sjayaram@akamai.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Link: https://lkml.kernel.org/r/20201002080621.551044-2-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-13 18:38:34 -07:00
..
android
arm64 Merge branch 'for-next/late-arrivals' into for-next/core 2020-10-07 14:36:24 +01:00
bpf selftests/bpf: Add bpf_{update, delete}_map_elem in hashmap iter program 2020-09-03 17:36:41 -07:00
breakpoints selftests: breakpoints: do not use ksft_exit_skip after ksft_set_plan 2020-07-06 15:47:48 -06:00
capabilities
cgroup kselftests: cgroup: add perpcu memory accounting test 2020-08-12 10:57:55 -07:00
clone3 linux-kselftest-5.9-rc1 2020-08-05 10:28:25 -07:00
core tests: add CLOSE_RANGE_UNSHARE tests 2020-06-17 00:07:38 +02:00
cpu-hotplug
cpufreq
dmabuf-heaps
drivers selftests: mlxsw: RED: Test offload of trapping on RED qevents 2020-08-03 18:06:46 -07:00
efivarfs
exec selftests/exec: add file type errno tests 2020-08-14 19:56:56 -07:00
filesystems selftests/binderfs: Fix harness API usage 2020-07-06 15:59:16 -06:00
firmware selftest/firmware: Add selftest timeout in settings 2020-07-25 12:05:20 +02:00
fpu selftests/fpu: Add an FPU selftest 2020-06-29 10:02:23 +02:00
ftrace selftests/ftrace: Support ":README" suffix for requires 2020-06-16 10:42:47 -06:00
futex
gpio
ia64
intel_pstate
ipc
ir
kcmp
kexec
kmod selftests: kmod: use variable NAME in kmod_test_0001() 2020-08-12 10:58:01 -07:00
kselftest Driver core changes for 5.9-rc1 2020-08-05 11:52:17 -07:00
kvm selftests: kvm: Fix assert failure in single-step test 2020-09-23 10:23:56 -04:00
lib lib: make a test module with set/clear bit 2020-06-04 19:06:25 -07:00
livepatch selftests/livepatch: adopt to newer sysctl error format 2020-07-15 08:54:35 +02:00
lkdtm lkdtm: Make arch-specific tests always available 2020-06-29 18:41:39 +02:00
locking
media_tests
membarrier
memfd
memory-hotplug
mincore selftests: add mincore() tests 2020-08-07 11:33:27 -07:00
mount
mqueue
net selftests: rtnetlink: Test bridge enslavement with different parent IDs 2020-09-10 15:06:48 -07:00
netfilter selftests: netfilter: add command usage 2020-08-28 20:12:00 +02:00
nsfs
ntb NTB: ntb_test: Fix bug when counting remote files 2020-06-05 20:02:09 -04:00
openat2
pid_namespace selftests: Remove unneeded selftest API headers 2020-07-06 15:59:07 -06:00
pidfd linux-kselftest-5.9-rc1 2020-08-05 10:28:25 -07:00
powerpc * Extend the recovery from MCE in kernel space also to processes which 2020-10-12 10:14:38 -07:00
prctl
proc
pstore
ptp testptp: add new options for perout phase and pulse width 2020-07-20 18:04:59 -07:00
ptrace
rcutorture Merge branches 'doc.2020.06.29a', 'fixes.2020.06.29a', 'kfree_rcu.2020.06.29a', 'rcu-tasks.2020.06.29a', 'scale.2020.06.29a', 'srcu.2020.06.29a' and 'torture.2020.06.29a' into HEAD 2020-06-29 12:03:15 -07:00
resctrl
rseq rseq/selftests: Test MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ 2020-09-25 14:23:27 +02:00
rtc
safesetid
seccomp Cleanup, SECCOMP_FILTER support, message printing fixes, and other 2020-08-15 18:50:32 -07:00
sigaltstack selftests: sigaltstack: do not use ksft_exit_skip after ksft_set_plan 2020-07-06 15:57:15 -06:00
size
sparc64
splice selftests: splice: Check behavior of full and short splices 2020-08-07 10:50:11 -07:00
static_keys
sync selftests: sync_test: do not use ksft_exit_skip after ksft_set_plan 2020-07-06 15:57:28 -06:00
sysctl linux-kselftest-5.8-rc1 2020-06-09 10:03:12 -07:00
tc-testing tc-testing: Add tdc to kselftests 2020-07-20 18:29:37 -07:00
timens
timers selftests/timers: Turn off timeout setting 2020-08-20 15:49:28 -06:00
tmpfs
tpm2 selftests: tpm: upgrade TPM2 tests from Python 2 to Python 3 2020-07-06 14:20:35 -06:00
uevent selftests: Remove unneeded selftest API headers 2020-07-06 15:59:07 -06:00
user
vDSO
vm selftests/vm: 8x compaction_test speedup 2020-10-13 18:38:34 -07:00
watchdog
wireguard wireguard: device: avoid circular netns references 2020-06-23 14:50:34 -07:00
x86 * Misc minor cleanups and corrections to the fsgsbase code and 2020-10-12 10:44:24 -07:00
zram
.gitignore
gen_kselftest_tar.sh
kselftest_deps.sh
kselftest_harness.h selftests/harness: Limit step counter reporting 2020-07-17 13:56:35 -06:00
kselftest_install.sh
kselftest_module.h
kselftest.h linux-kselftest-5.9-rc1 2020-08-05 10:28:25 -07:00
lib.mk selftests: fix condition in run_tests 2020-07-07 14:11:31 -06:00
Makefile selftests: add mincore() tests 2020-08-07 11:33:27 -07:00