Re[2]: sio: lots of silo overflows on Asus K8V with Moxa SmartioC104H/PCI solved

From: Carlos Velasco <freebsd_at_newipnet.com>
Date: Tue, 04 May 2004 16:12:37 +0200
On 05/05/2004 at 0:04 Bruce Evans wrote:

>So much for my theory that the problem is contention with a low priority
>thread.  Since holding a spin lock or otherwise disabling interrupts for
>too long would also break the PUC_FASTINTR case, the problem must be that
>the highest priority runnable thread (which with my patch can only be the
>sio (puc) ithread if that thread is runnable) is not always run.  This is
>quite likely to be just the old bug that handling of interrupts which
>can't be handled immediately might be delayed for too long.  From
>ithread_schedule():

Bruce,

Could this be relationated to my problem with "interrupt-level buffer
overflows " posted on next thread?
http://lists.freebsd.org/pipermail/freebsd-current/2004-May/026697.html

Regards,
Carlos Velasco
Received on Tue May 04 2004 - 05:36:24 UTC

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