How much swap?

[david thornton]

I can imagine a good use of a ram based /tmp:

php session data.

Anyone played around with that?

David


Robert Brockway wrote:

> On Thu, 26 Oct 2006, Lennart Sorensen wrote:
>
>> Swapping to ram would be completely pointless and rather stupid.
>
>
> Yes exactly :)
>
>> Mouting tmp in ram using tmpfs makes perfectly good sense though.  Why
>> copy stuff from one part of ram to another through multiple layers of
>> block emulation for no useful purpose?
>
>
> I used to use tmpfs but I stopped doing so for two reasons.  These 
> reasons are important to me but they may not be as important to others...
>
> 1. tmpfs on Linux does not support quotas.  I mostly admin on 
> multi-user boxes and I don't want users being able to individually 
> fill /tmp.  This gives all users a bad day.
>
> 2. I haven't found a terribly huge performance improvement in using 
> tmpfs. this is mainly because only a minority of file writes occur in 
> /tmp.
>
> Yeah tmpfs can be used in places other than /tmp but in general these 
> points still apply.
>
> This is why I've stopped using tmpfs.
>
> Rob
>

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