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Date: Fri, 03 Nov 2006 17:21:54 -0600 From: Alberto Alonso <alberto@...ys.net> To: Sergey Vlasov <vsu@...linux.ru> Cc: linux-kernel@...r.kernel.org Subject: Re: qstor driver -> irq 193: nobody cared On Fri, 2006-11-03 at 23:52 +0300, Sergey Vlasov wrote: > On Fri, Nov 03, 2006 at 02:22:07PM -0600, Alberto Alonso wrote: > > On Fri, 2006-11-03 at 22:00 +0300, Sergey Vlasov wrote: > > > On Fri, 03 Nov 2006 12:02:53 -0600 Alberto Alonso wrote: > > > > > > > I have a Pacific Digital qstor card on irq 193. I am using kernel > > > > 2.6.17.13 SMP > > > > > > > > > > > > irq 193: nobody cared (try booting with the "irqpoll" option) > > > > > > Did you try this option? It may decrease performance, but in some cases > > > IRQ routing is so screwed that only irqpoll helps. > > > > I have now switched to using that option. Will kick in after I reboot. > > Actually, it might be better to wait with this - it is the last resort > option, if there is nothing else to try. I'll wait then. This is a file server with 6 active HD controllers and 14 drives. For what I can figure out reading LKML irqpoll would really have a bad effect. > > > 0000:00:0f.2 USB Controller: ServerWorks OSB4/CSB5 OHCI USB Controller (rev 04) (prog-if 10 [OHCI]) > > Subsystem: ServerWorks OSB4/CSB5 OHCI USB Controller > > Flags: bus master, medium devsel, latency 64, IRQ 10 > > Memory at fe9fe000 (32-bit, non-prefetchable) [size=4K] > > Can you try with ohci-hcd loaded (and without irqpoll)? USB > controllers might cause such problems, because BIOSen often do weird > things with them for legacy emulation; however, loading a proper > driver should make BIOS stop messing with the hardware behind the back > of the OS. > > After loading ohci-hcd look which IRQ does the USB controller use - if > it is the same IRQ as the qstor card, you should keep ohci-hcd loaded > to avoid problems. (If it is on some other IRQ, loading ohci-hcd > might still help - the code for enabling the PCI device calls ACPI > BIOS, which might change interrupt routing setup in the chipset.) I have now compiled and enabled the ohci-hcd module. It ended up in IRQ10 > > Also look for something like "USB Keyboard Support" and maybe "USB > Mouse Support" in BIOS setup - some BIOS versions have severe problems > with this emulation, so it may be better to disable it unless you > really need it. > > Disabling USB in the BIOS setup if you really don't need might be > another option. > > > 0000:01:05.0 SCSI storage controller: LSI Logic / Symbios Logic 53c1010 Ultra3 SCSI Adapter (rev 01) > > Subsystem: Gateway 2000: Unknown device 1040 > > Flags: medium devsel > > I/O ports at 1000 [disabled] [size=256] > > Memory at <ignored> (64-bit, non-prefetchable) [disabled] > > Memory at <ignored> (64-bit, non-prefetchable) [disabled] > > Capabilities: [40] Power Management version 2 > > > > 0000:01:05.1 SCSI storage controller: LSI Logic / Symbios Logic 53c1010 Ultra3 SCSI Adapter (rev 01) > > Subsystem: Gateway 2000: Unknown device 1040 > > Flags: medium devsel > > I/O ports at 1400 [disabled] [size=256] > > Memory at <ignored> (64-bit, non-prefetchable) [disabled] > > Memory at <ignored> (64-bit, non-prefetchable) [disabled] > > Capabilities: [40] Power Management version 2 > > These devices seem to be disabled, but if loading ohci-hcd does not > help, you can try to load the sym53c8xx driver and look whether it > ends up on the same IRQ as qstor. I will go in tonight and disable all USB and symbios SCSI controllers on the MB via the BIOS. I don't use SCSI disks on that server anymore, and I can get by without the USB ports. The really bad thing is that I can't reproduce it on purpose. Some times I've gone for 6 weeks without any problems. This morning got really bad, but it hasn't happened again since. Thanks for all your help, Alberto -- Alberto Alonso Global Gate Systems LLC. (512) 351-7233 http://www.ggsys.net Hardware, consulting, sysadmin, monitoring and remote backups - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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