Mercurial > hg
annotate tests/test-mq-qimport-fail-cleanup.t @ 30212:260af19891f2
changegroup: increase write buffer size to 128k
By default, Python defers to the operating system for choosing the
default buffer size on opened files. On my Linux machine, the default
is 4k, which is really small for 2016.
This patch bumps the write buffer size when writing
changegroups/bundles to 128k. This matches the 128k read buffer
we already use on revlogs.
It's worth noting that this only impacts when writing to an explicit
file (such as during `hg bundle`). Buffers when writing to bundle
files via the repo vfs or to a temporary file are not impacted.
When producing a none-v2 bundle file of the mozilla-unified repository,
this change caused the number of write() system calls to drop from
952,449 to 29,788. After this change, the most frequent system
calls are fstat(), read(), lseek(), and open(). There were
2,523,672 system calls after this patch (so a net decrease of
~950k is statistically significant).
This change shows no performance change on my system. But I have a
high-end system with a fast SSD. It is quite possible this change
will have a significant impact on network file systems, where
extra network round trips due to excessive I/O system calls could
introduce significant latency.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sun, 16 Oct 2016 13:35:23 -0700 |
parents | 0342bf292f73 |
children |
rev | line source |
---|---|
12465
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
1 Failed qimport of patches from files should cleanup by recording successfully |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
2 imported patches in series file. |
11462
1b82a26635d7
mq: qimport cleanup on fail (issue2214)
Vishakh H <vsh426@gmail.com>
parents:
diff
changeset
|
3 |
12465
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
4 $ echo "[extensions]" >> $HGRCPATH |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
5 $ echo "mq=" >> $HGRCPATH |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
6 $ hg init repo |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
7 $ cd repo |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
8 $ echo a > a |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
9 $ hg ci -Am'add a' |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
10 adding a |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
11 $ cat >b.patch<<EOF |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
12 > diff --git a/a b/a |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
13 > --- a/a |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
14 > +++ b/a |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
15 > @@ -1,1 +1,2 @@ |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
16 > a |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
17 > +b |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
18 > EOF |
11462
1b82a26635d7
mq: qimport cleanup on fail (issue2214)
Vishakh H <vsh426@gmail.com>
parents:
diff
changeset
|
19 |
12465
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
20 empty series |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
21 |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
22 $ hg qseries |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
23 |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
24 qimport valid patch followed by invalid patch |
11462
1b82a26635d7
mq: qimport cleanup on fail (issue2214)
Vishakh H <vsh426@gmail.com>
parents:
diff
changeset
|
25 |
12465
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
26 $ hg qimport b.patch fakepatch |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
27 adding b.patch to series file |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
28 abort: unable to read file fakepatch |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
29 [255] |
11462
1b82a26635d7
mq: qimport cleanup on fail (issue2214)
Vishakh H <vsh426@gmail.com>
parents:
diff
changeset
|
30 |
12465
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
31 valid patches before fail added to series |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
32 |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
33 $ hg qseries |
8b12768b15e2
tests: unify test-mq-qimport-fail-cleanup
Matt Mackall <mpm@selenic.com>
parents:
11462
diff
changeset
|
34 b.patch |
15704
8857e150bec0
phases: prevent mq to qimport immutable change.
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
15243
diff
changeset
|
35 |
8857e150bec0
phases: prevent mq to qimport immutable change.
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
15243
diff
changeset
|
36 $ hg pull -q -r 0 . # update phase |
8857e150bec0
phases: prevent mq to qimport immutable change.
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
15243
diff
changeset
|
37 $ hg qimport -r 0 |
8857e150bec0
phases: prevent mq to qimport immutable change.
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
15243
diff
changeset
|
38 abort: revision 0 is not mutable |
29968
0342bf292f73
mq: use single quotes in use warning
timeless <timeless@mozdev.org>
parents:
16913
diff
changeset
|
39 (see 'hg help phases' for details) |
15704
8857e150bec0
phases: prevent mq to qimport immutable change.
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
15243
diff
changeset
|
40 [255] |
16913
f2719b387380
tests: add missing trailing 'cd ..'
Mads Kiilerich <mads@kiilerich.com>
parents:
16107
diff
changeset
|
41 |
f2719b387380
tests: add missing trailing 'cd ..'
Mads Kiilerich <mads@kiilerich.com>
parents:
16107
diff
changeset
|
42 $ cd .. |