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Date:      Wed, 22 Feb 2017 15:27:04 -0800
From:      Gleb Smirnoff <glebius@FreeBSD.org>
To:        Julien Charbon <jch@freebsd.org>
Cc:        hiren@FreeBSD.org, Jason Eggleston <jeggleston@llnw.com>, rrs@FreeBSD.org,  jtl@FreeBSD.org, net@FreeBSD.org
Subject:   Re: listening sockets as non sockets
Message-ID:  <20170222232704.GJ8899@FreeBSD.org>
In-Reply-To: <0858647a-ec3c-1a78-053f-d04397a82d8a@freebsd.org>
References:  <20170127005251.GM2611@FreeBSD.org> <20170210063024.GE1973@FreeBSD.org> <20170216184903.GF58829@FreeBSD.org> <0858647a-ec3c-1a78-053f-d04397a82d8a@freebsd.org>

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On Tue, Feb 21, 2017 at 09:58:45AM +0100, Julien Charbon wrote:
J> > T> 1) The patch worked pretty okay, but the idea of separate file type is
J> > T>    abandoned. With current filedescriptor code it is almost impossible
J> > T>    to racelessly switch fileops and f_data.
J> > T>    For more details read the commit message, URL below.
J> > T> 
J> > T> 2) I moved the work to git. It allows for easier code sharing.
J> > T> 
J> > T> https://github.com/glebius/FreeBSD/commit/3a52df429889ea9c6e61013f6913aad95939f159
J> > 
J> > The current 'solisten' branch at https://github.com/glebius/FreeBSD has
J> > been running successfully for 48 hours at Netflix. But as mentioned before,
J> > our connection rate is pretty low.
J> > 
J> > So, testing from Julien and Hiren will be much appreciated.
J> 
J>  Sound good, I will have spare time to get performance results on our
J> side w/ and w/o your change before the end of this week.

Thanks, Julien! Looking forward for your results. Meanwhile, the code has
been running for a week on a single Netflix box. And for 24 hours on a
set of boxes as A/B test against non-patched code. Since our connection
rate is low, and we never seen accept_mtx to be a major problem in our
profiling, the A/B test didn't show any statistically significant
improvements. But my biased eye of course sees some improvements in the
graphs :)

-- 
Totus tuus, Glebius.



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