GitHub user selvaganesang opened a pull request:
https://github.com/apache/incubator-trafodion/pull/1045
[TRAFODION-2566] Reduce the virtual memory allocated in Trafodion proâ¦
â¦cesses with JDK1.8
Added two new configurable JVM options -XX:CompressedClassSpaceSize=128m and
-XX:MaxMetaSpaceSize=128m.
You can modify the default value of these options using environment
variables
JVM_COMPRESSED_CLASS_SPACE_SIZE and JVM_METASPACE_SIZE respectively.
With this change the virtual memory of any SQL processes and tm is reduced
by 1GB.
In JDK1.8 this space is used in lieu of permanent generation. Hence, I
reduced the
default Java Objects Max heap size for SQL master, ESP and arkcmp processes
to 256 MB from 512MB.
The udrserv process continues to have 512MB of java objects space.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/selvaganesang/incubator-trafodion
trafodion-2566
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-trafodion/pull/1045.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1045
----
commit f288cc973cf7f562f7bf6ff66255f3a74608f183
Author: selvaganesang <[email protected]>
Date: 2017-04-01T00:39:46Z
[TRAFODION-2566] Reduce the virtual memory allocated in Trafodion processes
with JDK1.8
Added two new configurable JVM options -XX:CompressedClassSpaceSize=128m and
-XX:MaxMetaSpaceSize=128m.
You can modify the default value of these options using environment
variables
JVM_COMPRESSED_CLASS_SPACE_SIZE and JVM_METASPACE_SIZE respectively.
With this change the virtual memory of any SQL processes and tm is reduced
by 1GB.
In JDK1.8 this space is used in lieu of permanent generation. Hence, I
reduced the
default Java Objects Max heap size for SQL master, ESP and arkcmp processes
to 256 MB from 512MB.
The udrserv process continues to have 512MB of java objects space.
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