t/perf/p7519-fsmonitor.sh: warm cache on first git status

nipunn1313 · gitster · commit 5851462e8d90 · 2020-10-20T12:52:22.000-07:00
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 &lt;nipunn@dropbox.com&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git 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

Original file line number	Diff line number	Diff line change
`@@ -114,7 +114,8 @@ test_expect_success "setup for fsmonitor" '`
`114`	`114`	`fi &&`
`115`	`115`
`116`	`116`	`git config core.fsmonitor "$INTEGRATION_SCRIPT" &&`
`117`		`- git update-index --fsmonitor`
	`117`	`+ git update-index --fsmonitor &&`
	`118`	`+ git status # Warm caches`
`118`	`119`	`'`
`119`	`120`
`120`	`121`	`if test -n "$GIT_PERF_7519_DROP_CACHE"; then`