Re: [Xen-devel] Interrupt levels

[Nicholas Lee <nic-lists@xxxxxxxxxxxxxx>]

On Tue, Mar 08, 2005 at 12:50:58PM -0000, Ian Pratt wrote:
> 
> I doubt its anything to do with spinlocks, but this issue is going to be
> much easier to figure out if it occurs on a freshly booted machine with
> just a dom0, no xend (hence no bridge).

I'll build a minimal config kernal and test it this evening.

> Please can you confirm that this is the case. Is it just the timer
> interrupt line that's going up fast?
> (BTW: what is ioc0?)

LSI1030 Raid control status interface.

Jan 17 14:33:03 localhost kernel: Fusion MPT base driver 2.05.11.03
Jan 17 14:33:03 localhost kernel: Copyright (c) 1999-2003 LSI Logic Corporation
Jan 17 14:33:03 localhost kernel: mptbase: Initiating ioc0 bringup
Jan 17 14:33:03 localhost kernel: ioc0: 53C1030: Capabilities={Initiator}
Jan 17 14:33:03 localhost kernel: mptbase: 1 MPT adapter found, 1 installed.

for:
nic@stateless:/usr/src/sys/mpt-status-1.0$ sudo ./mpt-status
ioc0 vol 0 type IM, 2 phy, 136 GB, flags ENABLED, state OPTIMAL
ioc0 phy 0 IBM-ESXS ST3146807LC   FN B25H, 136 GB, state ONLINE
ioc0 phy 1 IBM-ESXS ST3146807LC   FN B25H, 136 GB, state ONLINE

nic@stateless:/usr/src/sys/mpt-status-1.0$ cat /proc/mpt/ioc0/summary
ioc0: LSI53C1030, FwRev=01032715h, Ports=1, MaxQ=222, IRQ=22

> Exactly what kernel are you using? Have you modified the config?

2.6.10-xen0. Yes.  I'll send though the diff seperately.

> What hardware are you using (including any USB devices)?


IBM X336 with hardware scsi raid1. In colo with the only thing attached
being a spider web cable (*). I don't have figures for when it was in my
lab and attached to a keyboard.  Pretty plain basic system.

(*) Breaks out a keyboard, vga and mouse ports from a special plug this
series of 1U IBM x-servers have.  Nothing attached to it.

Nicholas


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