Date: Thu, 27 Jul 2000 15:24:27 -0700 (PDT) From: Kris Kennaway <kris@FreeBSD.org> To: ym g <ymg@graffiti.net> Cc: freebsd-stable@freebsd.org Subject: Re: Which applications are using kqueue ? Message-ID: <Pine.BSF.4.21.0007271517400.34543-100000@freefall.freebsd.org> In-Reply-To: <20000727143650.29162.qmail@graffiti.net>
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On Thu, 27 Jul 2000, ym g wrote:
> Are there any applications which use this ?
A few at the moment, but they're growing. tail -f, and the l0pht-watch
ports are the only apps I know of at the moment, both of which achieve
dramatic reductions in CPU time (and better performance, for l0pht-watch)
due to not having to spin in poll() or select() when watching the
file/directory. There's also the py-kqueue port which is a kqueue
interface to python.
Brian Feldman was working on kqueueing an ircd which should have good
performance benefits since poll() is apparently a big bottleneck there
too.
> Are there plans for any apps like thin/fast [maybe in kernel]
> webserver which uses kqueue
I've been tinkering with kq'ing thttpd - in fact I have it working (which
was trivial), although it's not optimized yet so I don't expect major
performance changes - thttpd is still querying each FD individually for
status, instead of just using the next ones kq tells it about. I just need
to figure out how to benchmark it effectively - httperf is running into
client limitations so far.
Kris
--
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