On Fri, Dec 7, 2012 at 10:58 AM, 谢良 <xieli...@xiaomi.com> wrote: > Emm, have you tried to tune your GC deeply? please provide the exactly VM > options and jdk version and GC logs.. > In our test cluster this week, i managed to reduce the longest STW from > 22+ seconds(Xmx20G) to 1.1s(Xmx48G) under a very heavy YCSB stress > long-term-testing. >
Do you have any further explanation on your specific case ? Looks interesting :-) > > Also it would be better to ask help from hotspot-gc-use/hotspot-gc-dev > mail list:) > And the G1GC within jdk7u4+ is a potential solution for large-heap senario > as well:) > ________________________________________ > > On Mon, Dec 3, 2012 at 3:39 PM, Ishan Chhabra <ichha...@rocketfuel.com > > >wrote: > > > > > Hi, > > > Has anybody tried to run multiple RegionServers on a single physical > > > node? Are there deep technical issues or minor impediments that would > > > hinder this? > > > > > > We are trying to do this because we are facing a lot of GC pauses on > the > > > large heap sizes (~70G) that we are using, which leads to a lot of > > timeouts > > > in our latency critical application. More processes with smaller heaps > > > would help in mitigating this issue. > > > > > > Any experience or thoughts on this would help. > > > Thanks! > > > > > > -- > > > *Ishan Chhabra *| Rocket Scientist | Rocketfuel Inc. | *m *650 556 > 6803 > > > > > > > > > > > -- > > > > Robert Dyer > > rd...@iastate.edu > > > -- Adrien Mogenet 06.59.16.64.22 http://www.mogenet.me
