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From: Roger Larsson <roger.larsson@norran.net>
To: Roy Sigurd Karlsbakk <roy@karlsbakk.net>, Jens Axboe <axboe@suse.de>
Subject: Re: Errors in the VM - detailed
Date: Fri, 1 Feb 2002 19:52:43 +0100
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One more thing, that I think is important.

On Friday den 1 February 2002 19.44, Roger Larsson wrote:
> On Friday den 1 February 2002 17.11, Roy Sigurd Karlsbakk wrote:
> - - -
> About Jens patch:
>
> My feeling is that there should be (a lot) more  READA than READ.
> since sequential READ really only NEEDS one at a time.
>
> Number of READ limits the number of concurrent streams.
> And READA limits the maximum total read ahead.

With RAID as Roy uses this gets even worse!
READs has to be > concurrent streams * raid disks   [IMHO]
since each stream is splitted out on all disks...

/RogerL

-- 
Roger Larsson
Skellefte?
Sweden
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