busy disk

Colin Law clanlaw at gmail.com
Tue May 27 20:41:15 UTC 2014


On 27 May 2014 17:34, thufir <hawat.thufir at gmail.com> wrote:
> On Sat, 24 May 2014 16:39:34 +0100, Colin Law wrote:
>
>> On 24 May 2014 16:29, thufir <hawat.thufir at gmail.com> wrote:
>>> I don't know why, but nmon shows a 100% busy disk quite often.  It's a
>>> mix of read and write, but sometimes just reads.
>>>
>>> disk free shows:
>>>
>>> Filesystem                   Size  Used Avail Use% Mounted on
>>> /dev/mapper/ubuntu--vg-root   72G   20G   48G  29% /
>>
>> Is it swapping?  Use System Monitor to see whether it is using more than
>> a few MB.
>> How much RAM have you got and are you using Unity, LXDE or what?
>>
>> Colin
>
>
> I'm using 13.10 stock, so Unity.  I'll have to catch it again to see how
> much MB it's using of RAM, but it bogs the whole system down to a crawl.

That certainly sounds like swapping.

> Mostly reads, but some writes.
>
> I have 2GB RAM, DDR2:
>
> thufir at dur:~$ free -h
>              total       used       free     shared    buffers     cached
> Mem:          2.0G       1.6G       320M       174M        55M       884M

2GB is not a massive amount, but should be plenty provided you are not
trying to do too much at once (tens of tabs open in the browser for
example).  Wait till it goes again then have a look.

Colin




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