listening sockets as non sockets

[Slawa Olhovchenkov]

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 at 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.