# UseParNewGC disappeared in Graylog 3.2
**URL:** https://community.graylog.org/t/useparnewgc-disappeared-in-graylog-3-2/16999
**Category:** Graylog Central (peer support)
**Created:** [September 1, 2020, 4:46pm UTC](https://community.graylog.org/t/useparnewgc-disappeared-in-graylog-3-2/16999 "2020-09-01T16:46:29Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@frantz](https://community.graylog.org/u/frantz)
#### Post date: [September 1, 2020, 4:46pm UTC](https://community.graylog.org/t/useparnewgc-disappeared-in-graylog-3-2/16999/1 "2020-09-01T16:46:30Z")
Hello,
I’m updating from 3.0 to 3.2.6 and it seems the java parameter UseParNewGC has been removed from the GRAYLOG\_SERVER\_JAVA\_OPTS variable in the file /etc/sysconfig/graylog-server.
Do you know why ?
It seems to be a good parameter to improve GC on multi-CPU systems : [https://stackoverflow.com/questions/2101518/difference-between-xxuseparallelgc-and-xxuseparnewgc](https://stackoverflow.com/questions/2101518/difference-between-xxuseparallelgc-and-xxuseparnewgc)
---
### Author:  [@ttsandrew](https://community.graylog.org/u/ttsandrew)
#### Post date: [September 1, 2020, 9:35pm UTC](https://community.graylog.org/t/useparnewgc-disappeared-in-graylog-3-2/16999/2 "2020-09-01T21:35:10Z")
Hey @frantz, are you saying it doesn’t work at all anymore or just that it has been removed from the default configuration file? If it’s just no longer in the default config file (but works if you add it) it might be possible to track that change down with a changelog message on GitHub to see why it was removed from the default config. If it doesn’t work at all anymore even if in the config file you could try specifying the parameter on the JVM config instead of the Graylog server conf. If that doesn’t work, perhaps the functionality is no longer available.
---
### Author:  [@frantz](https://community.graylog.org/u/frantz)
#### Post date: [September 2, 2020, 9:04am UTC](https://community.graylog.org/t/useparnewgc-disappeared-in-graylog-3-2/16999/3 "2020-09-02T09:04:09Z")
It’s working well I’m just wondering why it has been removed from the default configuration file.
I think I’ve found the reason: it’s deprecated in java 8 and removed in java 9: [https://github.com/Graylog2/graylog2-server/commit/1e0ed41d87cd525d2da3b9c5b0dfbed71d100cfb](https://github.com/Graylog2/graylog2-server/commit/1e0ed41d87cd525d2da3b9c5b0dfbed71d100cfb)
---
### Author:  [@system](https://community.graylog.org/u/system)
#### Post date: [September 16, 2020, 9:04am UTC](https://community.graylog.org/t/useparnewgc-disappeared-in-graylog-3-2/16999/4 "2020-09-16T09:04:12Z")
This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.