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SOLR-7319: Revert previous patch, return to discussion. 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1670370 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Shawn Heisey 2015-03-31 15:54:05 +00:00
parent b13658aa5d
commit 5f5814ce27
3 changed files with 0 additions and 17 deletions
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15
solr/CHANGES.txt
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@ -91,15 +91,6 @@ Upgrading from Solr 5.0
contain some LGPL-only code. Until that's resolved by Tika, you can download the contain some LGPL-only code. Until that's resolved by Tika, you can download the
.jar yourself and place it under contrib/extraction/lib. .jar yourself and place it under contrib/extraction/lib.
* A twitter engineer discovered a JVM bug that causes GC pause problems. The
workaround for those problems makes certain functionality impossible, such as
running the jstat program on your Solr instance. That workaround has been
implemented in the bin/solr start scripts. If you need the missing java
functionality, delete the "-XX:+PerfDisableSharedMem" parameter from
bin/solr.in.sh or bin/solr.in.cmd.
http://www.evanjones.ca/jvm-mmap-pause.html
Detailed Change List Detailed Change List
---------------------- ----------------------
@ -350,12 +341,6 @@ Bug Fixes
* SOLR-7309: Make bin/solr, bin/post work when Solr installation directory contains spaces * SOLR-7309: Make bin/solr, bin/post work when Solr installation directory contains spaces
(Ramkumar Aiyengar, Martijn Koster) (Ramkumar Aiyengar, Martijn Koster)
* SOLR-7319: Workaround for the "Four Month Bug" GC pause problem discovered
by a twitter software engineer. This causes GC pauses when JVM statistics
are left enabled and there is heavy MMAP write activity.
http://www.evanjones.ca/jvm-mmap-pause.html
(Shawn Heisey)
Optimizations Optimizations
---------------------- ----------------------

1
solr/bin/solr.in.cmd
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@ -40,7 +40,6 @@ set GC_TUNE=-XX:NewRatio=3 ^
-XX:+UseCMSInitiatingOccupancyOnly ^ -XX:+UseCMSInitiatingOccupancyOnly ^
-XX:CMSInitiatingOccupancyFraction=50 ^ -XX:CMSInitiatingOccupancyFraction=50 ^
-XX:CMSMaxAbortablePrecleanTime=6000 ^ -XX:CMSMaxAbortablePrecleanTime=6000 ^
-XX:+PerfDisableSharedMem ^
-XX:+CMSParallelRemarkEnabled ^ -XX:+CMSParallelRemarkEnabled ^
-XX:+ParallelRefProcEnabled -XX:+ParallelRefProcEnabled

1
solr/bin/solr.in.sh
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@ -37,7 +37,6 @@ GC_TUNE="-XX:NewRatio=3 \
-XX:PretenureSizeThreshold=64m \ -XX:PretenureSizeThreshold=64m \
-XX:+UseCMSInitiatingOccupancyOnly \ -XX:+UseCMSInitiatingOccupancyOnly \
-XX:CMSInitiatingOccupancyFraction=50 \ -XX:CMSInitiatingOccupancyFraction=50 \
-XX:+PerfDisableSharedMem \
-XX:CMSMaxAbortablePrecleanTime=6000 \ -XX:CMSMaxAbortablePrecleanTime=6000 \
-XX:+CMSParallelRemarkEnabled \ -XX:+CMSParallelRemarkEnabled \
-XX:+ParallelRefProcEnabled" -XX:+ParallelRefProcEnabled"