From: Jes Sorensen <jes@sunsite.dk>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] IA64 Linux issues
Date: Mon, 30 Jul 2001 22:12:07 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590693005956@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590693005948@msgid-missing>
>>>>> "Van" = Van Maren, Kevin <kevin.vanmaren@unisys.com> writes:
Van> I'm running Caldera's 6/20/01 snapshot (modified 2.4.4 kernel) on
Van> a 4X, 8GB Lion.
Van> Under even "light" I/O load (mkfs to 2-4 disks) I get horiffic
Van> behavior -- basically what is described on this thread:
Van> http://www.cs.helsinki.fi/linux/linux-kernel/2001-20/0763.html
Van> [I/O drops down to < 300 I/Os per second (vmstat), but all the
Van> CPUs are pegged 99%+ system time.]
Van> That is after I first used "swiotlb\x10240" at elilo to avoid the
Van> panic, and then hacked the qlogicfc driver (patch at bottom) and
Van> applied the latest Adaptec driver patch (6.2.0) from freebsd.org
Van> to get 39-bit DMA. Problem occurs with 39160 & QL2200.
I'd stay away from the qlogicfc.c driver, it's got all sorts of
limitations.
Jes
next prev parent reply other threads:[~2001-07-30 22:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-28 8:03 [Linux-ia64] IA64 Linux issues Van Maren, Kevin
2001-07-30 22:12 ` Jes Sorensen [this message]
2001-07-30 23:34 ` Van Maren, Kevin
2001-07-31 0:17 ` Jes Sorensen
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