Re: updatedb

[Bongani Hlope <bhlope@mweb.co.za>]

On Thursday 26 July 2007 08:56:59 Rene Herman wrote:
> On 07/26/2007 08:39 AM, Bongani Hlope wrote:
> > On Thursday 26 July 2007 05:59:53 Rene Herman wrote:
> >> So what's happening? If you sit down with a copy op "top" in one
> >> terminal and updatedb in another, what does it show?
> >
> > Just tested that, there's a steady increase in the useage of buff
>
> Great. Now concentrate on the "swpd" column, as it's the only thing
> relevant here. The fact that an updatedb run fills/replaces caches is
> completely and utterly unsurprising and not something swap-prefetch helps
> with. The only thing it does is bring back stuff from _swap_.
>

;)

I have 2Gb of RAM and I never ever touched swap on all my work loads. I was 
just showing the behavior of updatedb on my desktop. I have never even looked 
at the swap-prefetch patch (for obvious reasons). I think people should also 
look at their /proc/sys/vm/overcommit_ratio
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