Cellsrv consumes high CPU and no free swap
Last updated on AUGUST 13, 2014
Applies to:Oracle Exadata Storage Server Software - Version 18.104.22.168.1 and later
Information in this document applies to any platform.
Cell alert log complains of of no free swap space:
Tue Nov 06 06:57:10 2012
Errors in file
RS-7445 [No more free swap space] [Service CELLSRV will be restarted]  
       
Incident details in:
Sweep [inc]: completed
Tue Nov 06 06:57:17 2012
State dump signal delivered to Cellsrv<24094>
State dump signal delivered to Cellsrv<24094> by RS.
cellsrv process takes very high CPU.There was no swap free memory.
Top - 22:03:23 up 46 days, 21:28, 0 users, load average: 35.13, 10.48, 4.41
Tasks: 388 total, 5 running, 383 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.6%us, 76.0%sy, 0.0%ni, 17.8%id, 4.4%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 24530660k total, 24395944k used, 134716k free, 836k buffers
Swap: 2096376k total, 2096372k used, 4k free, 71800k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
29582 root 18 0 16.5g 4.9g 74m S 8194.2 21.1 2237:13 /opt/oracle/cell22.214.171.124.1_LINUX.X64_120607/cellsrv/bin/cellsrv 100 5000 9 5042
28230 root 18 0 1553m 524m 17m S 1578.8 2.2 707:38.07 /usr/java/jdk1.5.0_15/bin/java -Xms256m -Xmx512m -Djava.library.path=/opt/oracle/cell11.
31234 root 15 0 11.3g 9.3g 1228 S 0.4 39.6 9:10.73 /usr/sbin/lsi_mrdsnmpagent -c /etc/snmp/snmpd.conf <<<<<<<<<<
@ zzz ***Sat Jan 19 22:03:26 EST 2013
@ MemTotal: 24530660 kB
@ MemFree: 144332 kB
@ SwapTotal: 2096376 kB
@ SwapFree: 0 kB ===========>
Reviewed osw files, specifically the oswps directory. After extracting the same timestamp and getting one snapshot of the ps command and ordering by SZ,
cellsrv 1954933 7.4 GB
* Note the large difference. It is expected for cellsrv to use that memory, but not for the lsi_mrdsnmpagent.
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