On Wed, 05 Oct 2011 15:54:08 -0400, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > Add an alternate I/O path that implements ->make_request for virtio-blk. > This is required for high IOPs devices which get slowed down to 1/5th of > the native speed by all the locking, memory allocation and other overhead > in the request based I/O path. Ouch. I'd be tempted to just switch across to this, though I'd be interested to see if the simple add_buf change I referred to before has some effect by itself (I doubt it). Also, though it's overkill I'd use standard list primitives rather than open-coding a single linked list. Thanks! Rusty. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
