[NCLUG] Choppy performance issues.

[Ray Frush]

What you’re looking for is something that is probably I/O blocking the whole system.   What do top, and iostat show you when you set the resolution to 1 second.  Perhaps you can catch whatever it is in action.   Try sorting by ‘TIME+’ to see if that pops out a different list of suspects.


> On 20 Jan 2015, at 10:04 AM, John Gilmore <j.arthur.gilmore at gmail.com> wrote:
> 
> I set top to update at 300
> secs, and this is what I got:
> top - 09:57:32 up 13:50,  3 users,  load average: 1.20, 1.22, 1.10
> Tasks: 314 total,   1 running, 313 sleeping,   0 stopped,   0 zombie
> %Cpu(s):  8.7 us, 25.7 sy,  0.0 ni, 65.4 id,  0.0 wa,  0.0 hi,  0.1 si,  0.0 st
> KiB Mem:   3803424 total,  2403724 used,  1399700 free,   106848 buffers
> KiB Swap: 16775164 total,        0 used, 16775164 free,   854228 cached
> 
>  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND
> 10946 jgilmore  20   0 1090m 669m  33m S 111.3 18.0  14:42.05 java
> 6153 jgilmore  15  -5  160m 6476 4536 S   4.1  0.2  23:47.45 pulseaudio
> 10860 jgilmore  20   0  641m 175m  30m S   2.5  4.7   0:43.03 iceweasel
> 4495 root      20   0 86572  48m  12m S   1.7  1.3   1:04.85 Xorg
> 10832 root      20   0     0    0    0 S   1.6  0.0   0:12.47 kworker/3:4
>