What is hammering my memory?

Dotan Cohen dotancohen at gmail.com
Tue Jul 6 05:59:48 UTC 2010

On 2 July 2010 19:54, Marius Gedminas <marius at pov.lt> wrote:
> On Fri, Jul 02, 2010 at 07:22:42PM +0300, Dotan Cohen wrote:
>> Then what should I check to see what is causing the system to be sluggish?
> 'vmstat 1' in a terminal, then do something sluggish and post the output
> here.
> Usual causes include:
>  * disk I/O
>    - e.g. some process in the background is indexing your filesystem
>    - or you are out of RAM and there's swapping (which you've already
>      ruled out)
>    - the kernel is doing a background RAID-1 resync every Sunday
>      morning (unlikely for laptops, though ;)
>  * CPU is bottle-necked
>    - some background process is doing something computation-intensive
>    - you're being flooded with network packets and the kernel is
>      hogging the CPU processing them (also unlikely for laptops; but
>      try to enable network shaping on an ancient Pentium PC used as an
>      office router...)
>  * poor video drivers causing screen redraws to be slow (depends on
>    your graphics hardware, video driver, driver configuration, and
>    applications you're running; also, I think this would show up as CPU
>    usage on top).
> Marius Gedminas

Thanks. I cannot reproduce the sluggishness now. But I'll keep trying.

Dotan Cohen


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