view tests/fixtures/most-recent-is-edit-tag.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 63cb630d667d
children
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SVN-fs-dump-format-version: 2

UUID: 65efcde9-3b35-4f89-9c6b-23da1cf93d9b

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

K 8
svn:date
V 27
2009-07-19T03:04:55.657240Z
PROPS-END

Revision-number: 1
Prop-content-length: 102
Content-length: 102

K 7
svn:log
V 3
btt
K 10
svn:author
V 5
durin
K 8
svn:date
V 27
2009-07-19T03:04:56.082834Z
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: tags/blah
Node-kind: dir
Node-action: add
Prop-content-length: 10
Content-length: 10

PROPS-END


Node-path: tags/versions
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: 110
Content-length: 110

K 7
svn:log
V 10
Add files.
K 10
svn:author
V 5
durin
K 8
svn:date
V 27
2009-07-19T03:04:57.109656Z
PROPS-END

Node-path: trunk/alpha
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 6
Text-content-md5: 9f9f90dbe3e5ee1218c86b8839db1995
Content-length: 16

PROPS-END
alpha


Node-path: trunk/beta
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 5
Text-content-md5: f0cf2a92516045024a0c99147b28f05b
Content-length: 15

PROPS-END
beta


Node-path: trunk/delta
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 6
Text-content-md5: d2840cc81bc032bd1141b56687d0f93c
Content-length: 16

PROPS-END
delta


Node-path: trunk/gamma
Node-kind: file
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Text-content-length: 6
Text-content-md5: 303febb9068384eca46b5b6516843b35
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gamma


Revision-number: 3
Prop-content-length: 105
Content-length: 105

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svn:log
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branch
K 10
svn:author
V 5
durin
K 8
svn:date
V 27
2009-07-19T03:05:00.048169Z
PROPS-END

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


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

K 7
svn:log
V 14
branch changes
K 10
svn:author
V 5
durin
K 8
svn:date
V 27
2009-07-19T03:05:01.081946Z
PROPS-END

Node-path: branches/dev_branch/alpha
Node-kind: file
Node-action: change
Text-content-length: 5
Text-content-md5: 5e723ed52db2000686425ca28bc5ba4a
Content-length: 5

narf


Node-path: branches/dev_branch/iota
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 5
Text-content-md5: ebcf3971120220589f1dfbf8d56e25b9
Content-length: 15

PROPS-END
iota


Node-path: branches/dev_branch/delta
Node-action: delete


Revision-number: 5
Prop-content-length: 111
Content-length: 111

K 7
svn:log
V 11
Make a tag.
K 10
svn:author
V 5
durin
K 8
svn:date
V 27
2009-07-19T03:05:04.056268Z
PROPS-END

Node-path: tags/some-tag
Node-kind: dir
Node-action: add
Node-copyfrom-rev: 4
Node-copyfrom-path: branches/dev_branch


Revision-number: 6
Prop-content-length: 113
Content-length: 113

K 7
svn:log
V 13
edit that tag
K 10
svn:author
V 5
durin
K 8
svn:date
V 27
2009-07-19T03:05:06.057723Z
PROPS-END

Node-path: tags/some-tag/alpha
Node-kind: file
Node-action: change
Text-content-length: 4
Text-content-md5: d3b07384d113edec49eaa6238ad5ff00
Content-length: 4

foo