From: Tom Tromey <tromey@redhat.com>
To: esr@thyrsus.com
Cc: emacs-devel@gnu.org
Subject: Re: Hideously slow VC status queries fixed
Date: Tue, 01 Jan 2008 16:21:50 -0700 [thread overview]
Message-ID: <m3zlvpb08h.fsf@fleche.redhat.com> (raw)
In-Reply-To: <20071231203319.GA26639@thyrsus.com> (Eric S. Raymond's message of "Mon\, 31 Dec 2007 15\:33\:19 -0500")
>>>>> "Eric" == Eric S Raymond <esr@thyrsus.com> writes:
Eric> Tom Tromey <tromey@redhat.com>:
>> Appended is a call-graph profile, thanks to Christian Ohler.
>> This is pretty interesting.
Eric> What are you seeing that I'm not? Nothing jumps out at me as
Eric> peculiar.
The vc-registered -> vc-call-backend edge seems particularly bad.
But perhaps I'm misreading this, or we knew it, or this profiler is
giving erroneous results.
BTW, today's VC changes roughly halved the number of calls to
vc-call-backend, but (according to oelp) the elapsed time hasn't
changed much. New profile appended.
Tom
Function Name Call Count Elapsed Time Average Time
=================================== ========== ============ ============
vc-registered 173 1366.0392379 7.8961805664
vc-call-backend 186 4515.3948180 24.276316225
<self or not profiled> 186 3140.0213510 16.881835220
vc-stay-local-p 1 1359.762977 1359.762977
vc-file-setprop 238528 11.230348000 4.708...e-05
vc-default-registered 18 1.501319 0.0834066111
vc-sccs-registered 17 1.4998170000 0.0882245294
vc-git-registered 17 0.3869679999 0.0227628235
vc-mcvs-registered 17 0.175918 0.0103481176
vc-bzr-registered 17 0.166246 0.0097791764
vc-hg-registered 17 0.1651839999 0.0097167058
vc-arch-registered 17 0.1644719999 0.0096748235
vc-mtn-registered 17 0.163277 0.0096045294
vc-find-backend-function 6 0.068498 0.0114163333
vc-state 5 0.0450599999 0.009012
vc-working-revision 5 0.043155 0.008631
vc-file-getprop 15 0.0001360000 9.066...e-06
vc-kill-buffer-hook 16 9.199...e-05 5.749...e-06
vc-stay-local-p 1 1359.745306 1359.745306
vc-state 17 9.137986 0.5375285882
vc-backend 23 1368.9283529 59.518624043
vc-registered 18 1368.5600880 76.031116000
<self or not profiled> 23 0.3674779999 0.0159773043
vc-file-getprop 24 0.000787 3.279...e-05
vc-backend 18 1368.5600880 76.031116000
vc-registered 18 1368.5600880 76.031116000
vc-call-backend 173 1366.0392379 7.8961805664
<self or not profiled> 18 2.5205340000 0.1400296666
vc-file-setprop 18 0.000171 9.5e-06
vc-file-getprop 18 0.000145 8.055...e-06
vc-call-backend 1 1359.762977 1359.762977
vc-stay-local-p 1 1359.762977 1359.762977
vc-backend 1 1359.745306 1359.745306
<self or not profiled> 1 0.0176510000 0.0176510000
vc-make-backend-sym 1 2e-05 2e-05
vc-call-backend 5 0.0450599999 0.009012
vc-state 51291 680.21053799 0.0132617913
<self or not profiled> 51291 658.54704799 0.0128394269
vc-file-getprop 51291 12.525504000 0.0002442047
vc-backend 17 9.137986 0.5375285882
vc-state 51291 12.525504000 0.0002442047
vc-backend 24 0.000787 3.279...e-05
vc-working-revision 5 0.000702 0.0001404
vc-registered 18 0.000145 8.055...e-06
vc-call-backend 15 0.0001360000 9.066...e-06
vc-file-getprop 51353 12.527274000 0.0002439443
<self or not profiled> 51353 12.527274000 0.0002439443
vc-call-backend 238528 11.230348000 4.708...e-05
vc-registered 18 0.000171 9.5e-06
vc-file-setprop 238546 11.230519000 4.707...e-05
<self or not profiled> 238546 11.230519000 4.707...e-05
vc-call-backend 18 1.501319 0.0834066111
vc-sccs-registered 17 1.3520339999 0.0795314117
vc-default-registered 35 2.853353 0.0815243714
vc-check-master-templates 35 2.0015959999 0.0571884571
<self or not profiled> 35 0.8511960000 0.0243198857
vc-make-backend-sym 35 0.0005610000 1.602...e-05
vc-default-registered 35 2.0015959999 0.0571884571
vc-check-master-templates 35 2.0015959999 0.0571884571
<self or not profiled> 35 1.8503919999 0.0528683428
vc-possible-master 105 0.151204 0.0014400380
vc-call-backend 17 1.4998170000 0.0882245294
vc-sccs-registered 17 1.4998170000 0.0882245294
vc-default-registered 17 1.3520339999 0.0795314117
<self or not profiled> 17 0.1477830000 0.0086931176
vc-call-backend 17 0.3869679999 0.0227628235
vc-git-registered 17 0.3869679999 0.0227628235
<self or not profiled> 17 0.3711519999 0.0218324705
vc-find-root 17 0.015816 0.0009303529
vc-call-backend 17 0.175918 0.0103481176
vc-mcvs-registered 17 0.175918 0.0103481176
<self or not profiled> 17 0.1591679999 0.0093628235
vc-find-root 17 0.0167500000 0.0009852941
vc-call-backend 17 0.166246 0.0097791764
vc-bzr-registered 17 0.166246 0.0097791764
<self or not profiled> 17 0.149044 0.0087672941
vc-find-root 17 0.017202 0.0010118823
vc-call-backend 17 0.1651839999 0.0097167058
vc-hg-registered 17 0.1651839999 0.0097167058
<self or not profiled> 17 0.1492689999 0.0087805294
vc-find-root 17 0.015915 0.0009361764
vc-call-backend 17 0.1644719999 0.0096748235
vc-arch-registered 17 0.1644719999 0.0096748235
<self or not profiled> 17 0.1479379999 0.0087022352
vc-find-root 17 0.016534 0.0009725882
vc-call-backend 17 0.163277 0.0096045294
vc-mtn-registered 17 0.163277 0.0096045294
<self or not profiled> 17 0.1464970000 0.0086174705
vc-find-root 17 0.01678 0.0009870588
vc-check-master-templates 105 0.151204 0.0014400380
vc-possible-master 105 0.151204 0.0014400380
<self or not profiled> 105 0.150816 0.0014363428
vc-sccs-search-project-dir 17 0.000388 2.282...e-05
vc-bzr-registered 17 0.017202 0.0010118823
vc-mtn-registered 17 0.01678 0.0009870588
vc-mcvs-registered 17 0.0167500000 0.0009852941
vc-arch-registered 17 0.016534 0.0009725882
vc-hg-registered 17 0.015915 0.0009361764
vc-git-registered 17 0.015816 0.0009303529
vc-find-root 102 0.0989970000 0.0009705588
<self or not profiled> 102 0.0989970000 0.0009705588
vc-call-backend 6 0.068498 0.0114163333
vc-find-backend-function 7 0.076992 0.0109988571
<self or not profiled> 7 0.076893 0.0109847142
vc-make-backend-sym 7 9.900...e-05 1.414...e-05
vc-call-backend 5 0.043155 0.008631
vc-working-revision 5 0.043155 0.008631
<self or not profiled> 5 0.042453 0.0084906
vc-file-getprop 5 0.000702 0.0001404
vc-default-registered 35 0.0005610000 1.602...e-05
vc-find-backend-function 7 9.900...e-05 1.414...e-05
vc-stay-local-p 1 2e-05 2e-05
vc-make-backend-sym 43 0.0006799999 1.581...e-05
<self or not profiled> 43 0.0006799999 1.581...e-05
vc-possible-master 17 0.000388 2.282...e-05
vc-sccs-search-project-dir 17 0.000388 2.282...e-05
<self or not profiled> 17 0.000388 2.282...e-05
vc-call-backend 16 9.199...e-05 5.749...e-06
vc-kill-buffer-hook 17 9.799...e-05 5.764...e-06
<self or not profiled> 17 9.799...e-05 5.764...e-06
next prev parent reply other threads:[~2008-01-01 23:21 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-27 0:11 Hideously slow VC status queries fixed Eric S. Raymond
2007-12-27 1:27 ` Tom Tromey
2007-12-27 2:19 ` Eric S. Raymond
2007-12-27 18:24 ` Richard Stallman
2007-12-29 19:18 ` Tom Tromey
2007-12-29 21:49 ` Eric S. Raymond
2007-12-30 21:54 ` Tom Tromey
2007-12-31 3:41 ` Eric S. Raymond
2007-12-31 19:09 ` Tom Tromey
2007-12-31 20:33 ` Eric S. Raymond
2007-12-31 20:58 ` Dan Nicolaescu
2007-12-31 21:42 ` Eric S. Raymond
2008-01-01 23:21 ` Tom Tromey [this message]
2008-01-02 0:19 ` Eric S. Raymond
2007-12-27 18:24 ` Richard Stallman
2007-12-28 9:02 ` Eric S. Raymond
2007-12-28 18:46 ` Tom Tromey
2007-12-28 19:36 ` Tom Tromey
2007-12-27 2:41 ` Dan Nicolaescu
2007-12-27 6:13 ` Alexandru Harsanyi
2007-12-27 13:21 ` Eric S. Raymond
2007-12-29 7:40 ` Stefan Monnier
2007-12-29 7:34 ` Stefan Monnier
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