Date: Sat, 18 Oct 2003 22:05:40 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Nate Lawson <nate@root.org> Cc: arch@freebsd.org Subject: Re: Variable timer tick rate? Message-ID: <9670.1066507540@critter.freebsd.dk> In-Reply-To: Your message of "Sat, 18 Oct 2003 13:02:29 PDT." <20031018130119.T47207@root.org>
next in thread | previous in thread | raw e-mail | index | archive | help
In message <20031018130119.T47207@root.org>, Nate Lawson writes: >This is an interesting approach. If there are no upcoming timeouts, >decrease the tick rate. Of course, you have to amortize the cost of >resetting the timer over the period of no ticks. > >http://kerneltrap.org/node/view/1006 Yes, unfortunately we may have a couple of timeout() (ab)users which use it to implement "as fast as possible polling" by calling timeout with a 1 tick argument, so last I looked (a couple of years ago) it fired every tick. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?9670.1066507540>