On 1/9/20 12:55 PM, John Garry wrote: > On 09/12/2019 10:10, Sumit Saxena wrote: >> On Mon, Dec 2, 2019 at 9:09 PM Hannes Reinecke <hare@xxxxxxx> wrote: >>> >>> Fusion adapters can steer completions to individual queues, and >>> we now have support for shared host-wide tags. >>> So we can enable multiqueue support for fusion adapters and >>> drop the hand-crafted interrupt affinity settings. >> >> Hi Hannes, >> >> Ming Lei also proposed similar changes in megaraid_sas driver some >> time back and it had resulted in performance drop- >> https://patchwork.kernel.org/patch/10969511/ >> >> So, we will do some performance tests with this patch and update you. >> > > Hi Sumit, > > I was wondering if you had a chance to do this test yet? > > It would be good to know, so we can try to progress this work. > > @Hannes, This shared sbitmap work now seems to conflict with Jens work > on tag caching > https://lore.kernel.org/linux-block/20200107163037.31745-1-axboe@xxxxxxxxx/T/#t, > but should be resolvable AFAICS (v1, anyway, which I checked). Anway, we > seem to have stalled, which I feared... > Thanks for the reminder. That was a topic I was wanting to discuss at LSF; will be sending a topic then. Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking hare@xxxxxxx +49 911 74053 688 SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), GF: Felix Imendörffer
