18 Mar
2014
18 Mar
'14
3:27 a.m.
On Mon, Mar 17, 2014 at 11:40:20PM +0000, Ian wrote:
Rodrigo Campos said:
top - 23:31:42 up 3 days, 10:07, 15 users, load average: 1.13, 0.87, 1.13
Tasks: 254 total, 2 running, 252 sleeping, 0 stopped, 0 zombie
%Cpu(s): 7.7 us, 1.4 sy, 0.0 ni, 53.3 id, 37.6 wa, 0.0 hi, 0.0 si,
0.0 st
KiB Mem: 16022464 total, 6679952 used, 9342512 free, 466836 buffers
KiB Swap: 16600060 total, 11056 used, 16589004 free, 1305176 cached
PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
20 0 2470m 1.7g 53m S 24.5 11.2 168:01.45 firefox
20 0 238m 66m 18m R 2.7 0.4 12:54.50 plugin-containe
20 0 218m 52m 27m S 2.0 0.3 13:58.07 chromium-browse
20 0 517m 273m 213m S 1.7 1.8 164:34.82 Xorg
20 0 291m 51m 28m S 1.7 0.3 60:55.20 chromium-browse
20 0 32224 3636 2928 D 1.7 0.0 0:00.43 apt-get
20 0 947m 425m 18m S 1.3 2.7 84:25.01 java
20 0 266m 22m 13m S 1.0 0.1 15:40.20 mate-terminal
20 0 0 0 0 S 1.0 0.0 0:01.45 kworker/u8:1
20 0 0 0 0 S 1.0 0.0 0:00.46 kworker/u8:3
20 0 5388 1504 1064 S 0.7 0.0 7:14.54 top
etc...
(with PIDs and user edited out so it fits better!)
The wa figure (IO-wait : time waiting for I/O completion) is noticeably
high. But what's so special about reading these files?
Probably anything. It seems that at that point you are not using much swap
either, although running "vmstat 1" might give you a better idea (but I would
guess it isn't).
Is your partition aligned ? What layers are on the stack ? LVM ? RAID ?