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Posted to commits@subversion.apache.org by hw...@apache.org on 2010/10/14 21:25:18 UTC
svn commit: r1022670 - /subversion/branches/performance/STATUS
Author: hwright
Date: Thu Oct 14 19:25:18 2010
New Revision: 1022670
URL: http://svn.apache.org/viewvc?rev=1022670&view=rev
Log:
On the performance branch:
* STATUS: Set svn:eol-style to native.
Modified:
subversion/branches/performance/STATUS (contents, props changed)
Modified: subversion/branches/performance/STATUS
URL: http://svn.apache.org/viewvc/subversion/branches/performance/STATUS?rev=1022670&r1=1022669&r2=1022670&view=diff
==============================================================================
--- subversion/branches/performance/STATUS (original)
+++ subversion/branches/performance/STATUS Thu Oct 14 19:25:18 2010
@@ -1,80 +1,80 @@
-Please review the following patches in this branch.
-They will be merged into /trunk after passing the review.
-
-
-* r982335
- Limit the amount of unused memory kept in apr_pools
- to the same amount as everywhere else, e.g. SVN.exe main().
- Justification:
- (1) uniform handling of memory pools
- (2) Without this change, apr pools will fragment indefinitely (?)
- for strings (e.g. fulltexts) and other chunks larger than 80kB.
- This already happens on trunk if memcached usage has been
- enabled.
-
-* r984984
- Reduce the number of revprop lookups during export and
- checkout by caching rev,author,timestamp triples locally in
- the report generation code.
- Justification:
- (1) Reduce I/O overhead, especially for pre-1.7 repos
- (2) Ensures consistent reports even if revprops get changed
- by concurrent accesses
-
-* r985472
- Minimize the number of retry attempts when looking for an
- unused temporary file name.
- Justification:
- Some functions (e.g. svn export) request temp file names without
- any randomized sub-string in it, thus retries may take longer and
- longer. This seems to hurt SVN developers more often than
- ordinary users (process gets killed more frequently) but it also
- makes the client less sensitive to cluttered TEMP folders etc.
-
-* r985477
- Eliminate OS overhead for determining the default permissions for
- temp files.
- Justification:
- Significant reduction in sys / OS overhead in svn export.
-
-* r985482
- Reduce the calling overhead for svn I/O functions by inlining the
- APR result -> svn_error_t conversion wrapper.
- Justification:
- A very simple change that reduces the costs of our deep
- calling hierarchies.
-
-* r985500
- Just another temp file name handling improvement: Use the already
- properly encoded file name information from the APR file instead
- of constructing it.
- Justification:
- Further reduction of the client-side overhead in svn export
- (and possibly others).
-
-* r985606
- A somewhat larger change: Reduce the ra_svn de-marshalling
- overhead mainly by pre-allocating sufficient container capacity
- in various places.
- Justification:
- In LAN environments, the data processing on the client becomes
- a bottleneck for faster servers.
-
-* r986453
- An even larger change: Speed up file translation by further optimizing
- the search for "interesting chars" and replacing EOLs only if they
- have actually changed (allowing for larger chunks of data per write
- output operation).
- Justification:
- Apart from the physical I/O and the MD5 translation, this is the
- most CPU-demanding part of an svn export. This patch more than
- doubles its performance. It should also speed up svn checkout by
- the same amount (not factor) of time.
-
-* r987888
- Ignore files generated by MS VisualStudio 2010.
- Justification:
- Dev usability improvement. No functional changes.
- Merged:
- Merged in r1022665. The changes to the wcroot were ignore, since an
- equivalent (but conflicting) change was already made there on trunk.
+Please review the following patches in this branch.
+They will be merged into /trunk after passing the review.
+
+
+* r982335
+ Limit the amount of unused memory kept in apr_pools
+ to the same amount as everywhere else, e.g. SVN.exe main().
+ Justification:
+ (1) uniform handling of memory pools
+ (2) Without this change, apr pools will fragment indefinitely (?)
+ for strings (e.g. fulltexts) and other chunks larger than 80kB.
+ This already happens on trunk if memcached usage has been
+ enabled.
+
+* r984984
+ Reduce the number of revprop lookups during export and
+ checkout by caching rev,author,timestamp triples locally in
+ the report generation code.
+ Justification:
+ (1) Reduce I/O overhead, especially for pre-1.7 repos
+ (2) Ensures consistent reports even if revprops get changed
+ by concurrent accesses
+
+* r985472
+ Minimize the number of retry attempts when looking for an
+ unused temporary file name.
+ Justification:
+ Some functions (e.g. svn export) request temp file names without
+ any randomized sub-string in it, thus retries may take longer and
+ longer. This seems to hurt SVN developers more often than
+ ordinary users (process gets killed more frequently) but it also
+ makes the client less sensitive to cluttered TEMP folders etc.
+
+* r985477
+ Eliminate OS overhead for determining the default permissions for
+ temp files.
+ Justification:
+ Significant reduction in sys / OS overhead in svn export.
+
+* r985482
+ Reduce the calling overhead for svn I/O functions by inlining the
+ APR result -> svn_error_t conversion wrapper.
+ Justification:
+ A very simple change that reduces the costs of our deep
+ calling hierarchies.
+
+* r985500
+ Just another temp file name handling improvement: Use the already
+ properly encoded file name information from the APR file instead
+ of constructing it.
+ Justification:
+ Further reduction of the client-side overhead in svn export
+ (and possibly others).
+
+* r985606
+ A somewhat larger change: Reduce the ra_svn de-marshalling
+ overhead mainly by pre-allocating sufficient container capacity
+ in various places.
+ Justification:
+ In LAN environments, the data processing on the client becomes
+ a bottleneck for faster servers.
+
+* r986453
+ An even larger change: Speed up file translation by further optimizing
+ the search for "interesting chars" and replacing EOLs only if they
+ have actually changed (allowing for larger chunks of data per write
+ output operation).
+ Justification:
+ Apart from the physical I/O and the MD5 translation, this is the
+ most CPU-demanding part of an svn export. This patch more than
+ doubles its performance. It should also speed up svn checkout by
+ the same amount (not factor) of time.
+
+* r987888
+ Ignore files generated by MS VisualStudio 2010.
+ Justification:
+ Dev usability improvement. No functional changes.
+ Merged:
+ Merged in r1022665. The changes to the wcroot were ignore, since an
+ equivalent (but conflicting) change was already made there on trunk.
Propchange: subversion/branches/performance/STATUS
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svn:eol-style = native