El 22/08/14 a les 13.20, Arianna Avanzini ha escrit: > Hello, [...] > The patchset implements in the backend driver the retrieval of information > about the currently-in-use block layer API for a certain device and about > the number of available submission queues, if the API turns out to be the > multi-queue one. The information is then advertised to the frontend driver > via XenStore. The frontend device can exploit such an information to allocate > and grant multiple I/O rings that the backend will be able to map. > The patchset has been tested with fio's IOmeter emulation on a four-cores > machine with a null_blk device (some results are available here: [2]).
Have you tried if using multiple queues (rings) between blkfront and blkback even when the underlying device doesn't use MQ increases the throughput? Roger. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
