[NCLUG] Choppy performance issues.
Ray Frush
phred at rflm.net
Tue Jan 20 10:27:20 MST 2015
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
>
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