On Fri, 2005-08-12 at 09:14 +0200, Arjan van de Ven wrote: > On Thu, 2005-08-11 at 18:31 -0400, Ming Zhang wrote: > > I have this eth1 and aic7xxx share 1 interrupt thus have impact on > > performance, anyway i can change it? thx! > > realistically, either you need to find a bios setting tweak, or you need > to move one of the two to a different pci slot in the machine. > i could not find any bios setting in the bios. it is a dell sc420. i will try to move card around and see what happen. thx! > > (Not that it's a big problem, sharing irqs on a pci system isn't too big > a deal) > i use it as my iscsi testbed so the sole activities are disk&network. that is why i am worrying about it. do you think it is ok to share? i think at least kernel need to find 1 irq handler to process the handler, then it have 1/2 chance (roughly assume 1 network interrupt corresponding to 1 storage io interrupt, of course this is not true in reality) to find that this is not the right one and then reload another handler? i guess this will be critical when # is huge like this. (i ran might 10 minutes with iometer on an iscsi target.) 16: 1330261 0 IO-APIC-level eth1, aic7xxx Ming - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
