Neeraj Singh
5dccd9155f
t/perf: add iteration setup mechanism to perf-lib
...
Tests that affect the repo in stateful ways are easier to write if we
can run setup steps outside of the measured portion of perf iteration.
This change adds a "--setup 'setup-script'" parameter to test_perf. To
make invocations easier to understand, I also moved the prerequisites to
a new --prereq parameter.
The setup facility will be used in the upcoming perf tests for batch
mode, but it already helps in some existing tests, like t5302 and t7820.
Signed-off-by: Neeraj Singh <neerajsi@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-04-06 13:13:26 -07:00
Ævar Arnfjörð Bjarmason
c8f39be67e
perf: add a comparison test of log --grep regex engines
...
Add a very basic performance comparison test comparing the POSIX
basic, extended and perl engines with patterns matching log messages
via --grep=<pattern>.
$ GIT_PERF_REPEAT_COUNT=10 GIT_PERF_LARGE_REPO=~/g/linux ./run p4220-log-grep-engines.sh
[...]
Test this tree
---------------------------------------------------------------------
4220.1: basic log --grep='how.to' 6.22(6.00+0.21)
4220.2: extended log --grep='how.to' 6.23(5.98+0.23)
4220.3: perl log --grep='how.to' 6.07(5.79+0.25)
4220.5: basic log --grep='^how to' 6.19(5.93+0.22)
4220.6: extended log --grep='^how to' 6.19(5.93+0.23)
4220.7: perl log --grep='^how to' 6.14(5.88+0.24)
4220.9: basic log --grep='[how] to' 6.96(6.65+0.28)
4220.10: extended log --grep='[how] to' 6.96(6.69+0.24)
4220.11: perl log --grep='[how] to' 6.95(6.58+0.33)
4220.13: basic log --grep='\(e.t[^ ]*\|v.ry\) rare' 7.10(6.80+0.27)
4220.14: extended log --grep='(e.t[^ ]*|v.ry) rare' 7.07(6.80+0.26)
4220.15: perl log --grep='(e.t[^ ]*|v.ry) rare' 7.70(7.46+0.22)
4220.17: basic log --grep='m\(ú\|u\)lt.b\(æ\|y\)te' 6.12(5.87+0.24)
4220.18: extended log --grep='m(ú|u)lt.b(æ|y)te' 6.14(5.84+0.26)
4220.19: perl log --grep='m(ú|u)lt.b(æ|y)te' 6.16(5.93+0.20)
With -i:
$ GIT_PERF_REPEAT_COUNT=10 GIT_PERF_LARGE_REPO=~/g/linux GIT_PERF_4220_LOG_OPTS=' -i' ./run p4220-log-grep-engines.sh
[...]
Test this tree
------------------------------------------------------------------------
4220.1: basic log -i --grep='how.to' 6.74(6.41+0.32)
4220.2: extended log -i --grep='how.to' 6.78(6.55+0.22)
4220.3: perl log -i --grep='how.to' 6.06(5.77+0.28)
4220.5: basic log -i --grep='^how to' 6.80(6.57+0.22)
4220.6: extended log -i --grep='^how to' 6.83(6.52+0.29)
4220.7: perl log -i --grep='^how to' 6.16(5.94+0.20)
4220.9: basic log -i --grep='[how] to' 7.87(7.61+0.24)
4220.10: extended log -i --grep='[how] to' 7.85(7.57+0.27)
4220.11: perl log -i --grep='[how] to' 7.03(6.75+0.25)
4220.13: basic log -i --grep='\(e.t[^ ]*\|v.ry\) rare' 8.68(8.41+0.25)
4220.14: extended log -i --grep='(e.t[^ ]*|v.ry) rare' 8.80(8.44+0.28)
4220.15: perl log -i --grep='(e.t[^ ]*|v.ry) rare' 7.85(7.56+0.26)
4220.17: basic log -i --grep='m\(ú\|u\)lt.b\(æ\|y\)te' 6.94(6.68+0.24)
4220.18: extended log -i --grep='m(ú|u)lt.b(æ|y)te' 7.04(6.76+0.24)
4220.19: perl log -i --grep='m(ú|u)lt.b(æ|y)te' 6.26(5.92+0.29)
See commit ("perf: add a comparison test of grep regex engines",
2017-04-19) for details on the machine the above test run was executed
on.
Before commit ("log: make --regexp-ignore-case work with
--perl-regexp", 2017-05-20) this test will almost definitely
fail (depending on the repo) if passed the -i option, since it wasn't
properly supported under PCRE.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-26 12:52:37 +09:00
