From: Greg Stark <gsstark@mit.edu>
To: Greg Stark <gsstark@MIT.EDU>
Cc: Gregory Stark <gsstark@mit.edu>, linux-kernel@vger.kernel.org
Subject: More tests [Was: Problem with read blocking for a long time on /dev/scd1]
Date: 22 Dec 2002 11:13:14 -0500 [thread overview]
Message-ID: <87of7euj51.fsf_-_@stark.dyndns.tv> (raw)
In-Reply-To: <87u1h799v5.fsf@stark.dyndns.tv>
I've done some more tests:
The problem still occurs with straight ide drivers, no ide-scsi
The problem still occurs with 2.4.20-ac2
I removed extraneous llseek syscalls from libdvdread, it's now reading purely
sequentially and still failing. I doubt an llseek to the current location even
gets through to the driver but I figured I would remove another variable.
Question: Does the readahead parameter in hdparm affect accesses to the raw
/dev/hdd device? Does it affect atapi cdrom access?
--
greg
next prev parent reply other threads:[~2002-12-22 16:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-21 0:49 Problem with read blocking for a long time on /dev/scd1 Gregory Stark
2002-12-21 1:28 ` Greg Stark
2002-12-21 6:14 ` Greg Stark
2002-12-22 16:13 ` Greg Stark [this message]
2002-12-22 20:13 ` More tests [Was: Problem with read blocking for a long time on /dev/scd1] Jakob Oestergaard
2002-12-23 8:58 ` Greg Stark
2002-12-27 15:36 ` Jakob Oestergaard
2003-01-08 4:03 ` Jakob Oestergaard
2002-12-23 18:02 ` Problem with read blocking for a long time on /dev/scd1 Krzysztof Halasa
2003-01-08 12:03 More tests [Was: Problem with read blocking for a long time on /dev/scd1] Andrey Borzenkov
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