What influences young generation pause times?

Matt Khan matt.khan at db.com
Tue Apr 20 13:30:32 PDT 2010


>> You might need a VM with this fix. 6782663: Data produced by 
PrintGCApplicationConcurrentTime and PrintGCApplicationStoppedTime is not 
accurate
OK so that's the early access for 6u21 by the looks of it. I'll repeat a 
run on that JVM (and with the safepoint stats).

>> If the log doesn't show a [GC...] line at a safepoint, then there is 
not GC activity during it 
does this mean that the actual time stopped due to GC is the one 
immediately after the GC line? 

>> You could use -XX:+PrintSafepointStatistics etc. to figure these out.
which other flags should I look at?

Cheers
Matt

Matt Khan
--------------------------------------------------
GFFX Auto Trading
Deutsche Bank, London


---

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and delete this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.

Please refer to http://www.db.com/en/content/eu_disclosures.htm for additional EU corporate and regulatory disclosures.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.openjdk.java.net/pipermail/hotspot-gc-dev/attachments/20100420/51fd8c39/attachment.html 
-------------- next part --------------
_______________________________________________
hotspot-gc-use mailing list
hotspot-gc-use at openjdk.java.net
http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use


More information about the hotspot-gc-dev mailing list