From: "Benjamin Marzinski" <bmarzins@redhat.com>
To: device-mapper development <dm-devel@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
"keith.busch@intel.com" <keith.busch@intel.com>,
Bart Van Assche <bart.vanassche@sandisk.com>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
Sagi Grimberg <sagig@dev.mellanox.co.il>
Subject: Re: dm-multipath low performance with blk-mq
Date: Mon, 25 Jan 2016 19:49:00 -0600 [thread overview]
Message-ID: <20160126014900.GR24960@octiron.msp.redhat.com> (raw)
In-Reply-To: <20160125214016.GA10060@redhat.com>
On Mon, Jan 25, 2016 at 04:40:16PM -0500, Mike Snitzer wrote:
> On Tue, Jan 19 2016 at 5:45P -0500,
> Mike Snitzer <snitzer@redhat.com> wrote:
>
> > On Mon, Jan 18 2016 at 7:04am -0500,
> > Sagi Grimberg <sagig@dev.mellanox.co.il> wrote:
>
> Would still appreciate answers to my 2 questions above (did you modify
> md->tag_set.nr_hw_queues and can you share your fio job?)
The number of CPUs (if it's not obvious from the fio job) and any
relevant information about the memory architecture (is this a NUMA
system? How many nodes?) might also help reproducing this.
-Ben
next prev parent reply other threads:[~2016-01-26 1:49 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <569CD4D6.2040908@dev.mellanox.co.il>
2016-01-19 10:37 ` dm-multipath low performance with blk-mq Sagi Grimberg
2016-01-19 22:45 ` Mike Snitzer
2016-01-25 21:40 ` Mike Snitzer
2016-01-25 23:37 ` Benjamin Marzinski
2016-01-26 13:29 ` Mike Snitzer
2016-01-26 14:01 ` Hannes Reinecke
2016-01-26 14:47 ` Mike Snitzer
2016-01-26 14:56 ` Christoph Hellwig
2016-01-26 15:27 ` Mike Snitzer
2016-01-26 15:57 ` Benjamin Marzinski
2016-01-27 11:14 ` Sagi Grimberg
2016-01-27 17:48 ` Mike Snitzer
2016-01-27 17:51 ` Jens Axboe
2016-01-27 18:16 ` Mike Snitzer
2016-01-27 18:26 ` Jens Axboe
2016-01-27 19:14 ` Mike Snitzer
2016-01-27 19:50 ` Jens Axboe
2016-01-27 17:56 ` Sagi Grimberg
2016-01-27 18:42 ` Mike Snitzer
2016-01-27 19:49 ` Jens Axboe
2016-01-27 20:45 ` Mike Snitzer
2016-01-29 23:35 ` Mike Snitzer
2016-01-30 8:52 ` Hannes Reinecke
2016-01-30 19:12 ` Mike Snitzer
2016-02-01 6:46 ` Hannes Reinecke
2016-02-03 18:04 ` Mike Snitzer
2016-02-03 18:24 ` Mike Snitzer
2016-02-03 19:22 ` Mike Snitzer
2016-02-04 6:54 ` Hannes Reinecke
2016-02-04 13:54 ` Mike Snitzer
2016-02-04 13:58 ` Hannes Reinecke
2016-02-04 14:09 ` Mike Snitzer
2016-02-04 14:32 ` Hannes Reinecke
2016-02-04 14:44 ` Mike Snitzer
2016-02-05 15:13 ` [RFC PATCH] dm: fix excessive dm-mq context switching Mike Snitzer
2016-02-05 18:05 ` Mike Snitzer
2016-02-05 19:19 ` Mike Snitzer
2016-02-07 15:41 ` Sagi Grimberg
2016-02-07 16:07 ` Mike Snitzer
2016-02-07 16:42 ` Sagi Grimberg
2016-02-07 16:37 ` Bart Van Assche
2016-02-07 16:43 ` Sagi Grimberg
2016-02-07 16:53 ` Mike Snitzer
2016-02-07 16:54 ` Sagi Grimberg
2016-02-07 17:20 ` Mike Snitzer
2016-02-08 12:21 ` Sagi Grimberg
2016-02-08 14:34 ` Mike Snitzer
2016-02-09 7:50 ` Hannes Reinecke
2016-02-09 14:55 ` Mike Snitzer
2016-02-09 15:32 ` Hannes Reinecke
2016-02-10 0:45 ` Mike Snitzer
2016-02-11 1:50 ` RCU-ified dm-mpath for testing/review Mike Snitzer
2016-02-11 3:35 ` Mike Snitzer
2016-02-11 15:34 ` Mike Snitzer
2016-02-12 15:18 ` Hannes Reinecke
2016-02-12 15:26 ` Mike Snitzer
2016-02-12 16:04 ` Hannes Reinecke
2016-02-12 18:00 ` Mike Snitzer
2016-02-15 6:47 ` Hannes Reinecke
2016-01-26 1:49 ` Benjamin Marzinski [this message]
2016-01-26 16:03 ` dm-multipath low performance with blk-mq Mike Snitzer
2016-01-26 16:44 ` Christoph Hellwig
2016-01-27 2:09 ` Mike Snitzer
2016-01-27 11:10 ` Sagi Grimberg
2016-01-26 21:40 ` Benjamin Marzinski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160126014900.GR24960@octiron.msp.redhat.com \
--to=bmarzins@redhat.com \
--cc=bart.vanassche@sandisk.com \
--cc=dm-devel@redhat.com \
--cc=hch@infradead.org \
--cc=keith.busch@intel.com \
--cc=linux-nvme@lists.infradead.org \
--cc=sagig@dev.mellanox.co.il \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).