Date: Mon, 26 Jul 2004 11:01:03 -0400 From: James <haesu@towardex.com> To: Don Bowman <don@sandvine.com> Cc: freebsd-net@freebsd.org Subject: Re: device polling takes more CPU hits?? Message-ID: <20040726150103.GA26080@scylla.towardex.com> In-Reply-To: <FE045D4D9F7AED4CBFF1B3B813C85337051D9433@mail.sandvine.com> References: <FE045D4D9F7AED4CBFF1B3B813C85337051D9433@mail.sandvine.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi Don, > I would post the output of 'sysctl kern.polling', its likely > some of the tuning there is insufficient. > What do you have HZ set to (sysctl kern.clockrate)? I would > probably have it set to ~1000. > You will want 'machdep.cpu_idle_hlt=1'. Thanks for quick reply. Here is the sysctl output with polling turned on. -J root@r2.bos# sysctl kern.clockrate kern.clockrate: { hz = 4000, tick = 250, tickadj = 1, profhz = 1024, stathz = 128 } root@r2.bos# sysctl kern.polling kern.polling.burst: 150 kern.polling.each_burst: 5 kern.polling.burst_max: 150 kern.polling.idle_poll: 1 kern.polling.poll_in_trap: 1 kern.polling.user_frac: 50 kern.polling.reg_frac: 20 kern.polling.short_ticks: 4909 kern.polling.lost_polls: 11464 kern.polling.pending_polls: 0 kern.polling.residual_burst: 0 kern.polling.handlers: 1 kern.polling.enable: 1 kern.polling.phase: 0 kern.polling.suspect: 10249 kern.polling.stalled: 3 root@r2.bos# sysctl machdep.cpu_idle_hlt machdep.cpu_idle_hlt: 1 -- James Jun TowardEX Technologies, Inc. Technical Lead Network Design, Consulting, IT Outsourcing james@towardex.com Boston-based Colocation & Bandwidth Services cell: 1(978)-394-2867 web: http://www.towardex.com , noc: www.twdx.net
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20040726150103.GA26080>