lkml.org 
[lkml]   [2011]   [Sep]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [GIT PULL] Queue free fix (was Re: [PATCH] block: Free queue resources at blk_release_queue())
On Wed, Sep 28, 2011 at 02:09:05PM -0400, Vivek Goyal wrote:
> I had thought of implementing a separate lock for throttling. Then I
> noticed few operations like checking for queue flags where I would
> be required to hold queue locks.

Can you do a writeup of these issues? E.g. if the flags are throtteling
specific we can move them to a separate flags field, if not we can
see if we can make them atomic or similar.

Right now on high iops device queue_lock is the major killer for
performance. It's one major reason (*) why a lot of the high iops devices
are all moving to ->make_request, which has other issues.

(*) others are struct request allocation and the pointless merge hash


\
 
 \ /
  Last update: 2011-09-28 20:19    [W:0.129 / U:0.716 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site