From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Lee Revell <rlrevell@joe-job.com>
Cc: Andrew Morton <akpm@osdl.org>,
Peter Osterlund <petero2@telia.com>,
axboe@suse.de,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Speed up the cdrw packet writing driver
Date: Sun, 29 Aug 2004 14:52:49 +0100 [thread overview]
Message-ID: <1093787569.27935.30.camel@localhost.localdomain> (raw)
In-Reply-To: <1093384621.817.76.camel@krustophenia.net>
On Maw, 2004-08-24 at 22:57, Lee Revell wrote:
> This defaults to 8192 on my (IDE) system. IIRC this value is larger if
> 48-bit addressing is in use (drive size > ~128GB). It does not seem
> right to me that the size of your hard drive should dictate the amount
> of I/O allowed to be in flight.
The largest I/O allowed in LBA28 mode is 256 sectors, and in LBA48
rather larger. Its a limit of the command functionality. The tradeoff
the other way is that LBA28 commands are slightly faster to issue.
next prev parent reply other threads:[~2004-08-29 14:55 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-14 19:13 [PATCH] Speed up the cdrw packet writing driver Peter Osterlund
2004-08-23 11:43 ` Jens Axboe
2004-08-23 16:07 ` Peter Osterlund
2004-08-24 20:29 ` Jens Axboe
2004-08-24 21:04 ` Peter Osterlund
2004-08-24 21:47 ` Andrew Morton
2004-08-24 21:57 ` Lee Revell
2004-08-29 13:52 ` Alan Cox [this message]
2004-08-24 22:03 ` Peter Osterlund
2004-08-24 22:56 ` Andrew Morton
2004-08-25 5:38 ` Peter Osterlund
2004-08-25 6:50 ` Jens Axboe
2004-08-28 9:59 ` Peter Osterlund
2004-08-28 13:07 ` Jens Axboe
2004-08-28 18:42 ` Peter Osterlund
2004-08-28 19:45 ` Andrew Morton
2004-08-28 20:57 ` Peter Osterlund
2004-08-28 21:23 ` Andrew Morton
2004-08-29 12:17 ` Peter Osterlund
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