This means you can safely run Hadoop and Hbase on jvm 7? We were just considering switching in production to java 7.
On Thursday, July 11, 2013, Azuryy Yu wrote: > Otis, > > I will do this test, maybe on the end of this month. because I haven't big > memory server for test now util the end of this month. > > > > > On Thu, Jul 11, 2013 at 9:38 AM, Otis Gospodnetic < > otis.gospodne...@gmail.com> wrote: > > > Hi, > > > > Probably not any time in the near future. We could do it, plop SPM in > > it and watch, but don't have time for it now. > > > > If anyone wants to give it a shot and use SPM to capture various > > JVM/HBase/server metrics, let me know if help around SPM is needed, > > longer trials, or whatever. > > > > Otis > > -- > > HBase Performance Monitoring -- http://sematext.com/spm > > > > > > > > On Wed, Jul 10, 2013 at 5:27 PM, Kevin O'dell <kevin.od...@cloudera.com> > > wrote: > > > Anyway you can test this with a 32GB heap? :) > > > > > > > > > On Wed, Jul 10, 2013 at 5:23 PM, Otis Gospodnetic < > > > otis.gospodne...@gmail.com> wrote: > > > > > >> But, very importantly: > > >> > > >> CPU after changes: https://apps.sematext.com/spm/s/CpZ9aPhL9L > > >> Load after changes: https://apps.sematext.com/spm/s/i7f3x6MXdZ > > >> > > >> So in practical terms, use something like -XX:MaxGCPauseMillis=200 > > >> -XX:NewRatio=4 to force short GC pauses, but count on having more of > > >> them and CPU sweating more. This gives you smaller pauses, no big STW > > >> pauses, but be prepared to pay in CPU cycles. > > >> > > >> HTH > > >> > > >> Otis > > >> -- > > >> HBase Performance Monitoring -- http://sematext.com/spm > > >> > > >> > > >> > > >> On Wed, Jul 10, 2013 at 4:20 PM, Otis Gospodnetic > > >> <otis.gospodne...@gmail.com> wrote: > > >> > Not big in this case - 1800m > > >> > > > >> > Otis > > >> > -- > > >> > HBase Performance Monitoring -- http://sematext.com/spm > > >> > > > >> > > > >> > > > >> > On Wed, Jul 10, 2013 at 3:57 PM, Vladimir Rodionov > > >> > <vrodio...@carrieriq.com> wrote: > > >> >> > > >> >> What is -Xmx heap size? > > >> >> > > >> >> Best regards, > > >> >> Vladimir Rodionov > > >> >> Principal Platform Engineer > > >> >> Carrier IQ, www.carrieriq.com > > >> >> e-mail: vrodio...@carrieriq.com > > >> >> > > >> >> ________________________________________ > > >> >> From: Otis Gospodnetic [otis.gospodne...@gmail.com] > > >> >> Sent: Wednesday, July 10, 2013 12:00 PM > > >> >> To: user@hbase.apache.org > > >> >> Subject: G1 before/after GC time graph > > >> >> > > >> >> Hi, > > >> >> > > >> >> There was talk of G1 and HBase here over the past few days. I > wanted > > >> >> to share a fresh and telling SPM graph showing G1 + some other > params > > >> >> in action: > > >> >> > > >> >> Result first: https://apps.sematext.com/spm/s/wN0hKVixxX > > >> >> > > >> >> This is what we had before: > > >> >> -XX:+HeapDumpOnOutOfMemoryError -XX:+UseG1GC > > >> >> -XX:InitiatingHeapOccupancyPercent=35 -XX:G1ReservePercent=25 > > >> >> > > >> >> And then we added: > > >> >>
