Re: [bitfolk] apt-get slowing down enormously

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Author: Rodrigo Campos
Date:  
To: Ian
CC: users
Subject: Re: [bitfolk] apt-get slowing down enormously
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 ?