Long remark due to young generation occupancy

[Gustav Åkesson]

Hi,

An update on this experiment.

I managed to track down the issue with 5 of the 57 collections (which still
had 100-200ms pauses). It was due to the abortable preclean sleeping. When
abortable preclean scans dirty cards and less than 100 cards were scanned,
then it sleeps for 100ms. In case that happens and a YG is processed, then
it will take ~100ms (default) to reach the remark, which means that eden
will fill up again. When I lowered the sleep time then the highest GC (out
of 50) was 43ms and 33ms. Rest was <11ms. Most of them were 7-8ms.



Best Regards,

Gustav Åkesson
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.openjdk.java.net/pipermail/hotspot-gc-use/attachments/20140117/a4a60327/attachment.html