Hey Ted, I have a grand total of 3 files, each holding a single long! Could it really be in gc hell because of this? I passed in -Xmx256m on the command line.
Satish On Tue, Jun 2, 2009 at 12:52 PM, Ted Dunning <ted.dunn...@gmail.com> wrote: > I have seen this when I was over-loading our zookeeper instance. When > total > data or total number of files gets large, the system can wind up in GC > almost permanently. Zookeeper being Zookeeper, it does an amazing job of > keeping on, but eventually things go bad. > > To test if this is your problem, you can do a couple of things. > > - first, figure out how many files you have and how much space they take > > - second, review how much memory you gave ZK to start. It looks from what > you show here that you didn't give it much memory. > > - third, turn on verbose GC and see what that says. > > - fourth, write back and tell me why I was wrong with this guess so that we > all get smarter! > > On Tue, Jun 2, 2009 at 12:07 PM, Satish Bhatti <cthd2...@gmail.com> wrote: > > > I am running a 5 node ZooKeeper cluster and I noticed that one of them > has > > very high CPU usage: > > > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > > 6883 infact 22 0 725m 41m 4188 S 95 0.5 > > 5671:54 java > > > > It is not "doing anything" application-wise at this point, so I was > > wondering why the heck it's using up so much CPU! I have attached a > jstack > > logfile to this email. > > > > Satish > > > > > > > -- > Ted Dunning, CTO > DeepDyve > > 111 West Evelyn Ave. Ste. 202 > Sunnyvale, CA 94086 > http://www.deepdyve.com > 858-414-0013 (m) > 408-773-0220 (fax) >
