From: Roger Larsson <roger.larsson@norran.net>
To: Roy Sigurd Karlsbakk <roy@karlsbakk.net>, Jens Axboe <axboe@suse.de>
Cc: Andrew Morton <akpm@zip.com.au>, <linux-kernel@vger.kernel.org>
Subject: Re: Errors in the VM - detailed
Date: Fri, 1 Feb 2002 19:52:43 +0100 [thread overview]
Message-ID: <200202011855.g11Itia20984@maila.telia.com> (raw)
In-Reply-To: <Pine.LNX.4.30.0202011708460.29576-100000@mustard.heime.net> <200202011847.g11Ilwa14845@maila.telia.com>
In-Reply-To: <200202011847.g11Ilwa14845@maila.telia.com>
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
Skellefteå
Sweden
next prev parent reply other threads:[~2002-02-01 18:56 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-31 15:05 Roy Sigurd Karlsbakk
2002-01-31 15:44 ` David Mansfield
2002-01-31 20:21 ` Roger Larsson
2002-01-31 20:29 ` Jens Axboe
2002-01-31 20:43 ` Andrew Morton
2002-01-31 21:37 ` Jens Axboe
2002-02-01 16:05 ` Roy Sigurd Karlsbakk
2002-02-01 16:11 ` Roy Sigurd Karlsbakk
2002-02-01 18:44 ` Roger Larsson
2002-02-01 18:52 ` Roger Larsson [this message]
2002-02-01 18:57 ` Jens Axboe
2002-02-02 14:52 ` Roy Sigurd Karlsbakk
2002-02-02 14:43 ` Roy Sigurd Karlsbakk
2002-02-02 14:43 ` Roy Sigurd Karlsbakk
2002-02-02 14:44 ` Jens Axboe
2002-02-02 15:03 ` Roy Sigurd Karlsbakk
2002-02-02 15:06 ` Jens Axboe
2002-02-02 15:22 ` Errors in the VM - detailed (or is it Tux?) Roy Sigurd Karlsbakk
2002-02-02 15:31 ` Errors in the VM - detailed (or is it Tux? or rmap? or those together...) Roger Larsson
2002-02-02 15:38 ` Roy Sigurd Karlsbakk
2002-02-02 16:24 ` Roger Larsson
2002-02-02 16:39 ` Roy Sigurd Karlsbakk
2002-02-02 16:52 ` Roy Sigurd Karlsbakk
2002-02-02 17:29 ` Roger Larsson
2002-02-02 17:45 ` Errors in the VM - detailed Roy Sigurd Karlsbakk
2002-02-01 17:39 ` Denis Vlasenko
[not found] <OF675D993F.933C6CB9-ON88256B52.00595CCC@boulder.ibm.com>
2002-02-01 11:52 ` Roy Sigurd Karlsbakk
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