From: Marvin Justice <mjustice@austin.rr.com>
To: <linux-kernel@vger.kernel.org>
Subject: Re: DMA problem (?) w/ 2.4.6-xfs and ServerWorks OSB4 Chipset
Date: Sun, 29 Jul 2001 16:50:35 -0500 [thread overview]
Message-ID: <01072916503504.04012@bozo> (raw)
The latest RH kernel, 2.4.3-12, works ok for us if we recompile with the
explicit OSB4 support disabled and turn on UDMA2 manually with hdparm. The
system stands up to continuous pounding with Bonnie and benchmarks at
>20MB/sec for block reads (Tyan 2515). On the other hand, with the OSB4
support turned on we see DMA timeouts immediately. I've just started some
tests with OSB4 turned on in 2.4.7-ac2 and so far it seems ok.
On an unrelated topic the Serverworks LE chipset does not seem to be capable
of handling 4GB of RAM, despite what the board vendors claim in their specs.
When a 4th 1G stick is added the system gets really slow --- like maybe
cacheing is disabled. We've seen this on both Tyan and SuperMicro boards. The
HE chipset seems to be ok.
Marvin Justice
next reply other threads:[~2001-07-29 22:19 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-29 21:50 Marvin Justice [this message]
2001-07-29 22:29 ` DMA problem (?) w/ 2.4.6-xfs and ServerWorks OSB4 Chipset Ignacio Vazquez-Abrams
2001-07-29 22:37 ` Alan Cox
-- strict thread matches above, loose matches on Subject: below --
2001-07-25 1:25 Adam McKenna
2001-07-25 3:08 ` Rico Tudor
2001-07-25 13:30 ` Alan Cox
2001-11-13 7:46 ` Adam McKenna
2001-11-13 9:51 ` Alan Cox
2001-11-13 10:30 ` Adam McKenna
2001-11-13 11:04 ` Alan Cox
2001-11-27 8:25 ` Adam McKenna
2001-07-25 15:46 ` Larry Sendlosky
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