t/perf/p7527: add perf test for builtin FSMonitor
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>maint
Jeff Hostetler
Junio C Hamano
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b5337082b3
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7667f9d2ae
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#!/bin/sh
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test_description="Perf test for the builtin FSMonitor"
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. ./perf-lib.sh
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if ! test_have_prereq FSMONITOR_DAEMON
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then
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skip_all="fsmonitor--daemon is not supported on this platform"
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test_done
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fi
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test_lazy_prereq UNTRACKED_CACHE '
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{ git update-index --test-untracked-cache; ret=$?; } &&
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test $ret -ne 1
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'
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# Lie to perf-lib and ask for a new empty repo and avoid
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# the complaints about GIT_PERF_REPO not being big enough
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# the perf hit when GIT_PERF_LARGE_REPO is copied into
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# the trash directory.
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#
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# NEEDSWORK: It would be nice if perf-lib had an option to
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# "borrow" an existing large repo (especially for gigantic
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# monorepos) and use it in-place. For now, fake it here.
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#
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test_perf_fresh_repo
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# Use a generated synthetic monorepo. If it doesn't exist, we will
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# generate it. If it does exist, we will put it in a known state
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# before we start our timings.
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#
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PARAM_D=5
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PARAM_W=10
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PARAM_F=9
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PARAMS="$PARAM_D"."$PARAM_W"."$PARAM_F"
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BALLAST_BR=p0006-ballast
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export BALLAST_BR
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TMP_BR=tmp_br
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export TMP_BR
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REPO=../repos/gen-many-files-"$PARAMS".git
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export REPO
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if ! test -d $REPO
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then
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(cd ../repos; ./many-files.sh -d $PARAM_D -w $PARAM_W -f $PARAM_F)
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fi
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enable_uc () {
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git -C $REPO config core.untrackedcache true
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git -C $REPO update-index --untracked-cache
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git -C $REPO status >/dev/null 2>&1
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}
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disable_uc () {
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git -C $REPO config core.untrackedcache false
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git -C $REPO update-index --no-untracked-cache
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git -C $REPO status >/dev/null 2>&1
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}
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start_fsm () {
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git -C $REPO fsmonitor--daemon start
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git -C $REPO fsmonitor--daemon status
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git -C $REPO config core.fsmonitor true
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git -C $REPO update-index --fsmonitor
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git -C $REPO status >/dev/null 2>&1
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}
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stop_fsm () {
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git -C $REPO config --unset core.fsmonitor
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git -C $REPO update-index --no-fsmonitor
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test_might_fail git -C $REPO fsmonitor--daemon stop 2>/dev/null
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git -C $REPO status >/dev/null 2>&1
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}
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# Ensure that FSMonitor is turned off on the borrowed repo.
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#
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test_expect_success "Setup borrowed repo (fsm+uc)" "
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stop_fsm &&
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disable_uc
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"
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# Also ensure that it starts in a known state.
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#
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# Because we assume that $GIT_PERF_REPEAT_COUNT > 1, we are not going to time
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# the ballast checkout, since only the first invocation does any work and the
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# subsequent ones just print "already on branch" and quit, so the reported
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# time is not useful.
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#
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# Create a temp branch and do all work relative to it so that we don't
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# accidentially alter the real ballast branch.
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#
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test_expect_success "Setup borrowed repo (temp ballast branch)" "
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test_might_fail git -C $REPO checkout $BALLAST_BR &&
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test_might_fail git -C $REPO reset --hard &&
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git -C $REPO clean -d -f &&
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test_might_fail git -C $REPO branch -D $TMP_BR &&
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git -C $REPO branch $TMP_BR $BALLAST_BR &&
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git -C $REPO checkout $TMP_BR
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"
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echo Data >data.txt
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# NEEDSWORK: We assume that $GIT_PERF_REPEAT_COUNT > 1. With
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# FSMonitor enabled, we can get a skewed view of status times, since
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# the index MAY (or may not) be updated after the first invocation
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# which will update the FSMonitor Token, so the subsequent invocations
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# may get a smaller response from the daemon.
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#
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do_status () {
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msg=$1
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test_perf "$msg" "
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git -C $REPO status >/dev/null 2>&1
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"
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}
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do_matrix () {
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uc=$1
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fsm=$2
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t="[uc $uc][fsm $fsm]"
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MATRIX_BR="$TMP_BR-$uc-$fsm"
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test_expect_success "$t Setup matrix branch" "
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git -C $REPO clean -d -f &&
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git -C $REPO checkout $TMP_BR &&
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test_might_fail git -C $REPO branch -D $MATRIX_BR &&
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git -C $REPO branch $MATRIX_BR $TMP_BR &&
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git -C $REPO checkout $MATRIX_BR
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"
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if test $uc = true
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then
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enable_uc
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else
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disable_uc
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fi
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if test $fsm = true
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then
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start_fsm
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else
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stop_fsm
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fi
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do_status "$t status after checkout"
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# Modify many files in the matrix branch.
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# Stage them.
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# Commit them.
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# Rollback.
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#
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test_expect_success "$t modify tracked files" "
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find $REPO -name file1 -exec cp data.txt {} \\;
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"
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do_status "$t status after big change"
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# Don't bother timing the "add" because _REPEAT_COUNT
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# issue described above.
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#
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test_expect_success "$t add all" "
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git -C $REPO add -A
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"
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do_status "$t status after add all"
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test_expect_success "$t add dot" "
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git -C $REPO add .
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"
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do_status "$t status after add dot"
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test_expect_success "$t commit staged" "
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git -C $REPO commit -a -m data
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"
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do_status "$t status after commit"
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test_expect_success "$t reset HEAD~1 hard" "
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git -C $REPO reset --hard HEAD~1 >/dev/null 2>&1
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"
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do_status "$t status after reset hard"
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# Create some untracked files.
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#
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test_expect_success "$t create untracked files" "
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cp -R $REPO/ballast/dir1 $REPO/ballast/xxx1
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"
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do_status "$t status after create untracked files"
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# Remove the new untracked files.
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#
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test_expect_success "$t clean -df" "
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git -C $REPO clean -d -f
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"
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do_status "$t status after clean"
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if test $fsm = true
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then
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stop_fsm
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fi
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}
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# Begin testing each case in the matrix that we care about.
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#
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uc_values="false"
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test_have_prereq UNTRACKED_CACHE && uc_values="false true"
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fsm_values="false true"
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for uc_val in $uc_values
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do
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for fsm_val in $fsm_values
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do
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do_matrix $uc_val $fsm_val
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done
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done
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cleanup () {
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uc=$1
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fsm=$2
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MATRIX_BR="$TMP_BR-$uc-$fsm"
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test_might_fail git -C $REPO branch -D $MATRIX_BR
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}
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# We're borrowing this repo. We should leave it in a clean state.
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#
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test_expect_success "Cleanup temp and matrix branches" "
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git -C $REPO clean -d -f &&
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test_might_fail git -C $REPO checkout $BALLAST_BR &&
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test_might_fail git -C $REPO branch -D $TMP_BR &&
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for uc_val in $uc_values
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do
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for fsm_val in $fsm_values
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do
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cleanup $uc_val $fsm_val
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done
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done
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"
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test_done
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