view tests/fixtures/fetch_missing_files_subdir.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 e58c2f1de059
children
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SVN-fs-dump-format-version: 2

UUID: 90158077-d23c-442d-9351-5dd160359962

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

K 8
svn:date
V 27
2008-11-25T21:55:11.516061Z
PROPS-END

Revision-number: 1
Prop-content-length: 112
Content-length: 112

K 7
svn:log
V 12
initial add.
K 10
svn:author
V 5
durin
K 8
svn:date
V 27
2008-11-25T22:00:55.483808Z
PROPS-END

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

PROPS-END


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

PROPS-END


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

PROPS-END


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

PROPS-END


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

PROPS-END
foo


Revision-number: 2
Prop-content-length: 130
Content-length: 130

K 7
svn:log
V 30
commit bar in the wrong place.
K 10
svn:author
V 5
durin
K 8
svn:date
V 27
2008-11-25T22:01:32.415795Z
PROPS-END

Node-path: foo/bar
Node-kind: dir
Node-action: add
Prop-content-length: 10
Content-length: 10

PROPS-END


Node-path: foo/bar/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: foo/bar/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: foo/bar/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: foo/bar/gamma
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 6
Text-content-md5: 303febb9068384eca46b5b6516843b35
Content-length: 16

PROPS-END
gamma


Revision-number: 3
Prop-content-length: 126
Content-length: 126

K 7
svn:log
V 26
move bar to the sane place
K 10
svn:author
V 5
durin
K 8
svn:date
V 27
2008-11-25T22:02:24.410165Z
PROPS-END

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


Node-path: foo/bar
Node-action: delete