On Wed, Aug 22, 2012 at 11:06 PM, Gen Liu <ge...@zynga.com> wrote: > Hi, > > We are running Region Server on big memory machine (70G) and set Xmx=64G. > Most heap is used as block cache for random read. > Stop-the-world GC is killing the region server, but using less heap (16G) > doesn't utilize our machines well. > > Is there a concurrent or parallel GC option that won't block all threads? > > Any thought is appreciated. Thanks. >
Have you tried tuning the JVM at all? What are the options that you are running with? You have GC logs enabled? Post a few up on pastebin? As Mohamed asks, you've the slab allocator enabled? What are your configs like? How many regions per server? What size are they? St.Ack
