It seems the attachments are lost. But high CPU for ReplicaRetcherThread might be related to KAFKA-1461. Can you try to apply that patch and see if it solves problem?
Thanks, Jiangjie (Becket) Qin From: "pundlik.anuja" <pundlik.an...@gmail.com<mailto:pundlik.an...@gmail.com>> Reply-To: "users@kafka.apache.org<mailto:users@kafka.apache.org>" <users@kafka.apache.org<mailto:users@kafka.apache.org>> Date: Monday, June 8, 2015 at 12:20 PM To: "users@kafka.apache.org<mailto:users@kafka.apache.org>" <users@kafka.apache.org<mailto:users@kafka.apache.org>> Subject: Re: High CPU usage for idle kafka server Seems to be LogCleaner and FetchRequest threads. Attached is the profiling screenshot On Fri, Jun 5, 2015 at 3:06 PM, Jiangjie Qin <j...@linkedin.com.invalid<mailto:j...@linkedin.com.invalid>> wrote: Has this to do with KAFKA-1461? Can you see which thread is taking a lot of cpu? Some jconsole plugin can get that information. Jiangjie (Becket) Qin On 6/5/15, 2:57 PM, "pundlik.anuja" <pundlik.an...@gmail.com<mailto:pundlik.an...@gmail.com>> wrote: >Hi Jay, > >Good to hear from you. I met you at the kafka meetup at linkedin. > >- No, I am running kafka_2.11-0.8.2.1 > > >Are there any logs/ any info that I can provide that will help you >understand what could be the issue? > >Thanks, >Anuja > >On Fri, Jun 5, 2015 at 2:36 PM, Jay Kreps ><jay.kr...@gmail.com<mailto:jay.kr...@gmail.com>> wrote: > >> This sounds a lot like a bug we fixed in 0.8.2.0, no chance you are >>running >> that pre-release version is there? >> >> -Jay >> >> On Wed, Jun 3, 2015 at 9:43 PM, Anuja Pundlik (apundlik) < >> apund...@cisco.com<mailto:apund...@cisco.com> >> > wrote: >> >> > Hi, >> > >> > I am using Kafka 0.8.2.1. >> > We have 1 zookeeper, 3 kafka brokers. >> > We have 9 topics, out of which 1 topic has 18 partitions, while >>another >> > has 12 partitions. All other topics have 1 partition each. >> > >> > We see that idle kafka brokers (not carrying any message) are using >>more >> > than 50% of CPU. See top output below. >> > >> > Is this a known issue? >> > >> > >> > Thanks >> > >> > >> > >> > top - 04:42:30 up 2:07, 1 user, load average: 1.50, 1.31, 0.92 >> > Tasks: 177 total, 1 running, 176 sleeping, 0 stopped, 0 zombie >> > Cpu(s): 13.5%us, 4.5%sy, 0.0%ni, 81.3%id, 0.2%wa, 0.0%hi, 0.1%si, >> > 0.4%st >> > Mem: 65974296k total, 22310524k used, 43663772k free, 112688k >>buffers >> > Swap: 0k total, 0k used, 0k free, 13382460k >>cached >> > >> > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND >> > 9295 wae 20 0 5212m 894m 12m S 62 1.4 22:50.99 java >> > 9323 wae 20 0 5502m 894m 12m S 56 1.4 24:28.69 java >> > 9353 wae 20 0 5072m 896m 12m S 54 1.4 17:04.31 java >> > >>
