RE: Increase in GC Pause time in tomcat http2 9.0.56

2022-08-30 Thread Arshiya Shariff
Thanks Zdeněk for the response . 1)We have enabled GC logs and we see that mixed GC takes more than 1 sec and it occurs once in 2 hours approximately , whereas with tomcat 9.0.38 mixed GC occurs every 20 mins approximately with very small GC Pause, both the GC log comparisons i.e. with tomcat 9

Re: Increase in GC Pause time in tomcat http2 9.0.56

2022-08-30 Thread Zdeněk Henek
HI Arshiya, MaxGCPauseMillis=100 maybe this is too strict? Causing you run into full gc. Jdk8 G1GC implementation has single thread full gc and these take more time to finish? Just guessing as you have not written if the long pause gcs are young gen pauses or full gc pauses. Another option which c

RE: Increase in GC Pause time in tomcat http2 9.0.56

2022-08-30 Thread Arshiya Shariff
We haven’t made any changes to the gc params when migrating tomcat : Please find the configurations: Java HotSpot(TM) 64-Bit Server VM (25.241-b07) for linux-amd64 JRE (1.8.0_241-b07), built on Dec 11 2019 02:22:16 by "java_re" with gcc 7.3.0 Memory: 4k page, physical 119478416k(781944k free), s

Re: Increase in GC Pause time in tomcat http2 9.0.56

2022-08-30 Thread Rob Sargent
On 8/30/22 06:11, Arshiya Shariff wrote: Hi All , We have migrated our application (which transports http/2 packets) from embedded tomcat version 9.0.38 to 9.0.56 in production . We observe that , in 9.0.56 mixed GC occurs less frequently than in 9.0.38 , but when it happens there are GC P

Increase in GC Pause time in tomcat http2 9.0.56

2022-08-30 Thread Arshiya Shariff
Hi All , We have migrated our application (which transports http/2 packets) from embedded tomcat version 9.0.38 to 9.0.56 in production . We observe that , in 9.0.56 mixed GC occurs less frequently than in 9.0.38 , but when it happens there are GC Pauses for more than 1 second , which is causi