Question about RS Set size

D vd Reddy dvdeepankar.reddy at gmail.com
Thu Feb 12 00:12:58 UTC 2015


Hi,
      we are using G1 GC for heap size of about 92 - 96 GB and we observed
in the logs that Scan RS times were too high (comparable to Object Copy
time, Is this normal ?, I have checked that there are no coarsening(s)). So
in order to counter that we plan to decrease the region count, currently we
set it explicitly to 4096 with regionSize to 32MB. My question is that if
we drop setting regionSize and decrease the regions to 2048 what will
happen to region size, Can it go above 32 MB and keep the regions to 2048
or is it capped at 32MB ?


Thanks in advance
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