Re: [PATCH] swapin readahead and fixes

["Stephen C. Tweedie" <sct@redhat.com>]

Hi,

On Wed, 09 Dec 1998 11:41:52 +0900, Drago Goricanec
<drago@king.otsd.ts.fujitsu.co.jp> said:

>> If we write this way (no more expensive than normal because
>> we write the stuff in one disk movement) swapin readahead
>> will be much more effective and performance will increase.

> Except for disk I/O bound processes, where the swapout writeahead
> steals some extra time from the disk.  

Not necessarily: having to do extra seeks hurts the throughput MUCH
more than doing a bit more IO when the disk head is already in position.

> I guess this is where having separate swap and data disks would
> help.

That is _always_ a good idea, anyway.

--Stephen
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