high load average

Posted by satish on Jul 18, 2018; 10:20am
URL: http://erman-arslan-s-oracle-forum.124.s1.nabble.com/high-load-average-tp6467.html

Dear Erman,

Today we have faced a situation where we could see both our linux servers(running R12.2 apps) had high load average around 60%.we have verified if any apps process was consuming CPU but none of them are consuming CPU.we could see idle CPU was 99% in both the linux servers.

when we try to open application,we are getting gateway timeout error.we are not able to run the commands on server and  finally we have done the reboot.Later the load average was normal and application worked as usual

How the load average is high when CPU was idle?is this normal?can you please let us know what all to check.because we didnt find any application process that was consuming high cpu or memory.

collected during the issue:


[applprod@node1 ~]$ sar -u 2 5
Linux 3.10.0-514.el7.x86_64 (erpprodapp01.ttd.com)      Wednesday 18 July 2018 _x86_64_ (8 CPU)

10:24:32  IST     CPU     %user     %nice   %system   %iowait    %steal     %idle
10:24:34  IST     all      0.19      0.00      0.13      0.00      0.00     99.69
10:24:36  IST     all      0.19      0.00      0.13      0.00      0.00     99.69
10:24:38  IST     all      0.06      0.00      0.19      0.00      0.00     99.75
10:24:40  IST     all      0.19      0.00      0.13      0.00      0.00     99.69
10:24:42  IST     all      0.19      0.00      0.13      0.00      0.00     99.69
Average:        all      0.16      0.00      0.14      0.00      0.00     99.70



[applprod@node1 ~]$ top
top - 10:16:48 up 85 days, 21:50,  4 users,  load average: 54.83, 54.09, 52.72
Tasks: 541 total,   1 running, 540 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.2 us,  0.2 sy,  0.0 ni, 99.6 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem : 65673132 total,  2327608 free, 18032896 used, 45312628 buff/cache
KiB Swap: 26843545+total, 26832688+free,   108564 used. 44360980 avail Mem


Thanks for all the support here