lkml.org 
[lkml]   [2001]   [Nov]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Swap vs No Swap.
Why have SWAP if you don't need it - answer that.?

James A Sutherland wrote:

> On Thursday 22 November 2001 1:53 am, war wrote:
> > I do not understand something.
> >
> > How can having swap speed ANYTHING up?
>
> By providing ADDITIONAL storage. Yes, it's slower than RAM - but it's faster
> than not having the storage at all.
>
> > RAM = 1000MB/s.
> > DISK = 10MB/s
> >
> > Ram is generally 1000x faster than a hard disk.
> >
> > No swap = fastest possible solution.
>
> BS. You don't use swap INSTEAD of RAM, but AS WELL AS. Moving less frequently
> used data to swap allows you to put more frequently used data in RAM, which
> DOES speed things up. (At least, it does if the VM system works properly :P)
>
> By your logic, we should switch off the system RAM, too: after all, L2 cache
> is much faster again, so using RAM can only slow things down?
>
> James.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:13    [W:0.155 / U:4.296 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site