[Bug 15014] New: Poor performance on O2 Micro carbus bridge (OZ6933)
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bugzilla-daemon at bugzilla.kernel.org
Sat Jan 9 09:10:31 EST 2010
http://bugzilla.kernel.org/show_bug.cgi?id=15014
Summary: Poor performance on O2 Micro carbus bridge (OZ6933)
Product: Drivers
Version: 2.5
Kernel Version: 2.6.32
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: PCMCIA
AssignedTo: linux-pcmcia at lists.infradead.org
ReportedBy: frodone at gmail.com
Regression: No
Created an attachment (id=24493)
--> (http://bugzilla.kernel.org/attachment.cgi?id=24493)
lspci -vv
Since kernel 2.6.32 i noticed degraded performance on network file transfers
from my 8139too pcmcia card (3MB/sec instead of 11MB/sec). I bisected till
this:
1ff84890b62b20823b3697a6041bbec1b5280cee is the first bad commit
commit 1ff84890b62b20823b3697a6041bbec1b5280cee
Author: Tomas Kovacik <nail at nodomain.sk>
Date: Sun Jul 26 22:04:58 2009 +0200
pcmcia: disable prefetch/burst for OZ6933
Problems have been reported [1], so disable prefetch/burst, to be on the
safe
side.
[1]
http://www.mail-archive.com/linux-pcmcia@lists.infradead.org/msg02048.html
Signed-off-by: Tomáš KováÄik <nail at nodomain.sk>
Signed-off-by: Wolfram Sang <w.sang at pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>
:040000 040000 bc4841745f3cba3e1cf1c952d4ce987572fa40f8
8b5f282e917ce1b11b499f81ad219a71487faccd M drivers
I agree with the "be on the safe side" statement, but...
Bye
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