Date: Sat, 25 Feb 2017 23:09:29 +0800 From: Sepherosa Ziehau <sepherosa@gmail.com> To: Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: rrs@freebsd.org, hiren@freebsd.org, Jason Eggleston <jeggleston@llnw.com>, Julien Charbon <jch@freebsd.org>, "freebsd-net@freebsd.org" <net@freebsd.org>, jtl@freebsd.org Subject: Re: listening sockets as non sockets Message-ID: <CAMOc5cwcMtHr15dQdaC1DARH2HUXSdHgHA2LOJH-J0YEZk7gww@mail.gmail.com> In-Reply-To: <20170224131349.GJ15630@zxy.spb.ru> References: <20170127005251.GM2611@FreeBSD.org> <20170210063024.GE1973@FreeBSD.org> <20170216184903.GF58829@FreeBSD.org> <0858647a-ec3c-1a78-053f-d04397a82d8a@freebsd.org> <20170222232704.GJ8899@FreeBSD.org> <CAMOc5cw7fkrS6LVCwo1hXY459O9p5VdgyfcE4Apkc-kAgQWu7A@mail.gmail.com> <20170223153636.GI15630@zxy.spb.ru> <20170224131349.GJ15630@zxy.spb.ru>
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On Fri, Feb 24, 2017 at 9:13 PM, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote: > On Thu, Feb 23, 2017 at 06:36:36PM +0300, Slawa Olhovchenkov wrote: > >> On Thu, Feb 23, 2017 at 11:40:21AM +0800, Sepherosa Ziehau wrote: >> >> > On Thu, Feb 23, 2017 at 7:27 AM, Gleb Smirnoff <glebius@freebsd.org> wrote: >> > > 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 :) >> > >> > You can use this to force clients to generate 1 request/connection >> > (--connreqs 1) to test the accept queue contention for HTTP workload: >> > https://github.com/sepherosa/wrk >> > >> > Checkout the sephe/wrk branch. pkg install wrk. Then gmake in the >> > checked out directory. >> >> pkg install gcc gmake, may be? >> >> PANIC: unprotected error in call to Lua API (27) >> PANIC: unprotected error in call to Lua API (13) > > Ah, sorry, wrong branch. > > Can I use per-connection Lua script (for delays and url generation)? > Not per-thread. I am need to emulate many client connections (about > 10K-40K). > Currently I am have some trouble w/ >20K connections. I didn't try the Lua script. Make sure to low the MSL on the box running wrk, e.g. 10ms. Well, I'd recommend you to run 15K concurrent connections on one testing box. Thanks, sephe -- Tomorrow Will Never Die
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