On Tuesday October 16, pengxihan@xxxxxxxxxxx wrote: > In my opinion, one > of ways to increase raid5 performance may be to change STRIPE_SIZE to > to a bigger value. It is now equal to PAGE_SIZE. But we can't just > change it simply, some other codes must be modified. I havn't tried,:). > Maybe Neil can give us some advices! I really don't think increase STRIPE_SIZE would have much effect. You might save a bit of CPU (though it might cost you too) but it should change the order of requests, so it wouldn't affect disk io much. I really think this is a scheduling problem. We need to make sure to send the requests in the right order without delaying things needlessly, and avoid reads when ever possible. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
