view tests/fixtures/delete_restore_trunk.svndump @ 931:e1dbd9646d6a

svnwrap: use custom StringIO class in get_file() The wrappers were calling ra.get_file() with a cStringIO object. Empirically, svn 1.7.5 is writing 16kB blocks to the stream object, and cStringIO reallocates its internal buffer and doubles its size whenever it is filled. With large committed files this requires two large memory blocks at the same time. SimpleStringIO implements the mimimum StringIO interface used by ra.get_file() but instead stores all the blocks and "join" them at the end. It means more fragmentation but requires only one large block, without overallocation. Also, 16kB blocks should be friendly to most allocators. In practice, this simple change let me convert a revision containing multiple moderately large files, the largest being around 450MB, with a 32-bits Windows setup, python 2.7, swig svn 1.7.5, in stupid mode, while it was previously aborting with "not enough memory". The same revision still fails in replay mode.
author Patrick Mezard <patrick@mezard.eu>
date Sun, 16 Sep 2012 19:31:49 +0200
parents c4ee11a5d04c
children
line wrap: on
line source

SVN-fs-dump-format-version: 2

UUID: fca176f4-a346-479b-ae2c-78c8442c3809

Revision-number: 0
Prop-content-length: 56
Content-length: 56

K 8
svn:date
V 27
2012-05-16T22:55:55.613464Z
PROPS-END

Revision-number: 1
Prop-content-length: 103
Content-length: 103

K 7
svn:log
V 3
btt
K 10
svn:author
V 6
bryano
K 8
svn:date
V 27
2012-05-16T22:55:56.081065Z
PROPS-END

Node-path: branches
Node-kind: dir
Node-action: add
Prop-content-length: 10
Content-length: 10

PROPS-END


Node-path: tags
Node-kind: dir
Node-action: add
Prop-content-length: 10
Content-length: 10

PROPS-END


Node-path: trunk
Node-kind: dir
Node-action: add
Prop-content-length: 10
Content-length: 10

PROPS-END


Revision-number: 2
Prop-content-length: 108
Content-length: 108

K 7
svn:log
V 8
add file
K 10
svn:author
V 6
bryano
K 8
svn:date
V 27
2012-05-16T22:55:57.071178Z
PROPS-END

Node-path: trunk/foo
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 4
Text-content-md5: d3b07384d113edec49eaa6238ad5ff00
Text-content-sha1: f1d2d2f924e986ac86fdf7b36c94bcdf32beec15
Content-length: 14

PROPS-END
foo


Revision-number: 3
Prop-content-length: 113
Content-length: 113

K 7
svn:log
V 12
delete trunk
K 10
svn:author
V 6
bryano
K 8
svn:date
V 27
2012-05-16T22:55:59.058026Z
PROPS-END

Node-path: trunk
Node-action: delete


Revision-number: 4
Prop-content-length: 114
Content-length: 114

K 7
svn:log
V 13
restore trunk
K 10
svn:author
V 6
bryano
K 8
svn:date
V 27
2012-05-16T22:56:01.055887Z
PROPS-END

Node-path: trunk
Node-kind: dir
Node-action: add
Node-copyfrom-rev: 2
Node-copyfrom-path: trunk


Revision-number: 5
Prop-content-length: 115
Content-length: 115

K 7
svn:log
V 14
append to file
K 10
svn:author
V 6
bryano
K 8
svn:date
V 27
2012-05-16T22:56:02.060991Z
PROPS-END

Node-path: trunk/foo
Node-kind: file
Node-action: change
Text-content-length: 8
Text-content-md5: f47c75614087a8dd938ba4acff252494
Text-content-sha1: 4e48e2c9a3d2ca8a708cb0cc545700544efb5021
Content-length: 8

foo
bar