Date: Wed, 1 Oct 2003 14:41:32 -0400 From: Don Bowman <don@sandvine.com> To: 'David Raistrick' <drais@wow.atlasta.net>, Richy Kim <rkim@sandvine.com>, freebsd-scsi@freebsd.org Cc: freebsd-hardware@freebsd.org Subject: RE: SCSI, SMP, and Supermicro, problems! Message-ID: <FE045D4D9F7AED4CBFF1B3B813C85337035E398E@mail.sandvine.com>
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From: David Raistrick [mailto:drais@wow.atlasta.net] > > Since the above, I rebooted the system again...and for the > first time I > > have a running SMP system. > > ...which degraded into being hung right after I sent the last email: > > ahd0: Timedout SCB already complete. Interrupts may not be > functioning. > > ahd0: Timedout SCB already complete. Interrupts may not be > functioning. > Well, another suggestion has to do with the use of the APIC and interrupt rotation. I can't recall the exact details of this, we ended up adding a 'options UNSWIZZLE' to the kernel. This was specifically for stuff behind a bridge. The problem was that BSD only allowed 24 interrupts, and we had run out. --don
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