High load average in test server
Posted by satish on Oct 01, 2021; 4:03am
URL: http://erman-arslan-s-oracle-forum.124.s1.nabble.com/High-load-average-in-test-server-tp10311.html
Dear erman,
This is status of our test instance.
orauat@node1 u02]$ top
top - 09:25:24 up 832 days, 16:54, 3 users, load average: 1556.44, 1555.65, 1554.67
Tasks: 8872 total, 1 running, 8870 sleeping, 0 stopped, 1 zombie
%Cpu(s): 5.3 us, 1.0 sy, 0.0 ni, 92.8 id, 0.9 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 13173105+total, 1558120 free, 29288668 used, 10088426+buff/cache
KiB Swap: 26843545+total, 26841614+free, 19308 used. 71956976 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3127 orauat 20 0 166920 10924 1500 R 42.3 0.0 0:00.12 top
20074 root rt 0 1019840 125764 81692 S 23.1 0.1 1293:44 osysmond.bin
19968 griduat -2 0 1380312 15716 13412 S 7.7 0.0 737:27.47 asm_vktm_+asm1
7659 orauat 20 0 1390184 48756 24108 S 3.8 0.0 236:21.37 oraagent.bin
17832 root 20 0 1885056 91288 32044 S 3.8 0.1 518:39.10 ohasd.bin
18207 griduat 20 0 1254876 43608 22944 S 3.8 0.0 226:59.27 oraagent.bin
20172 root 20 0 1117504 35796 19148 S 3.8 0.0 477:11.80 orarootagent.bi
1 root 20 0 196936 9816 3788 S 0.0 0.0 773:14.62 systemd
2 root 20 0 0 0 0 S 0.0 0.0 4:14.23 kthreadd
[orauat@node1 u02]$ sar -u 2 5
Linux 3.10.0-514.el7.x86_64 (node1.ttd.com) Friday 01 October 2021 _x86_64_ (8 CPU)
09:25:47 IST CPU %user %nice %system %iowait %steal %idle
09:25:49 IST all 1.07 0.00 3.22 0.13 0.00 95.59
09:25:51 IST all 5.17 0.00 9.14 0.06 0.00 85.62
09:25:53 IST all 2.84 0.00 5.24 0.06 0.00 91.85
09:25:55 IST all 1.45 0.00 2.14 0.13 0.00 96.28
09:25:57 IST all 3.98 0.00 0.63 0.06 0.00 95.33
Average: all 2.90 0.00 4.08 0.09 0.00 92.93
[orauat@node1 u02]$
[orauat@node1 u02]$ ps -eo ppid,pid,user,stat,pcpu,comm,wchan:32 | grep " D" |wc -l
1556
[orauat@node1 u02]$
Many such below processes
32153 32158 root D 0.0 lsof rpc_wait_bit_killable
32173 32177 root D 0.0 lsof rpc_wait_bit_killable
32201 32205 root D 0.0 lsof rpc_wait_bit_killable
32198 32207 root D 0.0 lsof rpc_wait_bit_killable
32226 32230 root D 0.0 lsof rpc_wait_bit_killable
32231 32235 root D 0.0 lsof rpc_wait_bit_killable
32237 32241 root D 0.0 lsof rpc_wait_bit_killable
32253 32257 root D 0.0 lsof rpc_wait_bit_killable
32321 32325 root D 0.0 lsof rpc_wait_bit_killable
32345 32349 root D 0.0 lsof rpc_wait_bit_killable
32350 32354 root D 0.0 lsof rpc_wait_bit_killable
32366 32370 root D 0.0 lsof rpc_wait_bit_killable
32395 32399 root D 0.0 lsof rpc_wait_bit_killable
32401 32405 root D 0.0 lsof rpc_wait_bit_killable
32463 32467 root D 0.0 lsof rpc_wait_bit_killable
32473 32477 root D 0.0 lsof rpc_wait_bit_killable
32497 32501 root D 0.0 lsof rpc_wait_bit_killable
32533 32537 root D 0.0 lsof rpc_wait_bit_killable
32532 32541 root D 0.0 lsof rpc_wait_bit_killable
32572 32577 root D 0.0 lsof rpc_wait_bit_killable
32591 32595 root D 0.0 lsof rpc_wait_bit_killable
32624 32628 root D 0.0 lsof rpc_wait_bit_killable
32647 32651 root D 0.0 lsof rpc_wait_bit_killable
32663 32667 root D 0.0 lsof rpc_wait_bit_killable
32668 32672 root D 0.0 lsof rpc_wait_bit_killable
32681 32685 root D 0.0 lsof rpc_wait_bit_killable
32715 32719 root D 0.0 lsof rpc_wait_bit_killable
32725 32729 root D 0.0 lsof rpc_wait_bit_killable
32737 32741 root D 0.0 lsof rpc_wait_bit_killable
[orauat@node1 u02]$
Our concern is does these processes with D state take cpu?
And how does it impact system?
Thank you