sio: lots of silo overflows on Asus K8V with Moxa SmartioC104H/PCI solved

[Carlos Velasco]

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