From: Davidlohr Bueso <dave@stgolabs.net>
To: Chris Mason <clm@fb.com>
Cc: ksummit-discuss@lists.linuxfoundation.org
Subject: Re: [Ksummit-discuss] [TECH TOPIC] benchmarking and performance trends
Date: Fri, 17 Jul 2015 14:22:24 -0700 [thread overview]
Message-ID: <1437168144.7345.9.camel@stgolabs.net> (raw)
In-Reply-To: <20150715153725.GA12601@ret.masoncoding.com>
On Wed, 2015-07-15 at 11:37 -0400, Chris Mason wrote:
> We're starting to push 4.0 into prod (122 hosts almost counts), and I'm
> sure we'll backport some wins from 4.2+. I'm hoping to make this a
> collection point for other benchmarking war stories. Our biggest gains
> right now are coming from scsi-mq, and early benchmarks show 4.2 has a
> boost that I'm hoping are from the futex locking improvements.
At least for 4.2 you might also want to keep an eye out for the new
qspinlock stuff. Which could be another source of the performance boost
you are seeing. Of course I have no idea what your workload does other
than suffer from futexes.
next prev parent reply other threads:[~2015-07-17 21:22 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-15 15:37 Chris Mason
2015-07-15 19:23 ` Kristen Accardi
2015-07-15 19:39 ` David Woodhouse
2015-07-15 19:58 ` Chris Mason
2015-07-15 20:32 ` Kristen Accardi
2015-07-17 19:38 ` Artem Bityutskiy
2015-07-16 1:35 ` Len Brown
2015-08-02 11:49 ` Fengguang Wu
2015-07-17 21:22 ` Davidlohr Bueso [this message]
2015-08-03 4:58 ` Fengguang Wu
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