diff mbox series

[v3,3/7] t/perf/p7519-fsmonitor.sh: warm cache on first git status

Message ID 401f696c8156acafd1bf91511fde7ae099ff9052.1603147657.git.gitgitgadget@gmail.com (mailing list archive)
State New, archived
Headers show
Series use fsmonitor data in git diff eliminating O(num_files) calls to lstat | expand

Commit Message

Nipunn Koorapati Oct. 19, 2020, 10:47 p.m. UTC 
From: Nipunn Koorapati <nipunn@dropbox.com>

The first git status would be inflated due to warming of
filesystem cache. This makes the results comparable.

Before
Test                                                             this tree
--------------------------------------------------------------------------------
7519.2: status (fsmonitor=.git/hooks/fsmonitor-watchman)         2.52(1.59+1.56)
7519.3: status -uno (fsmonitor=.git/hooks/fsmonitor-watchman)    0.18(0.12+0.06)
7519.4: status -uall (fsmonitor=.git/hooks/fsmonitor-watchman)   1.36(0.73+0.62)
7519.7: status (fsmonitor=)                                      0.69(0.52+0.90)
7519.8: status -uno (fsmonitor=)                                 0.37(0.28+0.81)
7519.9: status -uall (fsmonitor=)                                1.53(0.93+1.32)

After
Test                                                             this tree
--------------------------------------------------------------------------------
7519.2: status (fsmonitor=.git/hooks/fsmonitor-watchman)         0.39(0.33+0.06)
7519.3: status -uno (fsmonitor=.git/hooks/fsmonitor-watchman)    0.17(0.13+0.05)
7519.4: status -uall (fsmonitor=.git/hooks/fsmonitor-watchman)   1.34(0.77+0.56)
7519.7: status (fsmonitor=)                                      0.70(0.53+0.90)
7519.8: status -uno (fsmonitor=)                                 0.37(0.32+0.78)
7519.9: status -uall (fsmonitor=)                                1.55(1.01+1.25)

Signed-off-by: Nipunn Koorapati <nipunn@dropbox.com>
---
 t/perf/p7519-fsmonitor.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/t/perf/p7519-fsmonitor.sh b/t/perf/p7519-fsmonitor.sh
index def7ecdbc7..9313d4a51d 100755
--- a/t/perf/p7519-fsmonitor.sh
+++ b/t/perf/p7519-fsmonitor.sh
@@ -114,7 +114,8 @@  test_expect_success "setup for fsmonitor" '
 	fi &&
 
 	git config core.fsmonitor "$INTEGRATION_SCRIPT" &&
-	git update-index --fsmonitor
+	git update-index --fsmonitor &&
+	git status  # Warm caches
 '
 
 if test -n "$GIT_PERF_7519_DROP_CACHE"; then