lkml.org 
[lkml]   [2017]   [Oct]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH V7 4/6] blk-mq: introduce .get_budget and .put_budget in blk_mq_ops
On Fri, Oct 13, 2017 at 04:31:04PM +0000, Bart Van Assche wrote:
> On Sat, 2017-10-14 at 00:07 +0800, Ming Lei wrote:
> > Actually it is in hot path, for example, lpfc and qla2xx's queue depth is 3,
>
> Sorry but I doubt whether that is correct. More in general, I don't know any modern
> storage HBA for which the default queue depth is so low.

You can grep:

[ming@ming linux]$ git grep -n cmd_per_lun ./drivers/scsi/ | grep -E "qla2xxx|lpfc"

Even SRP/IB isn't big too, just 32.

--
Ming

\
 
 \ /
  Last update: 2017-10-13 18:46    [W:0.095 / U:0.640 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site