Date: Wed, 28 May 2008 09:16:54 +0200 From: Jeremie Le Hen <jeremie@le-hen.org> To: Yani Brankov <ian@bulinfo.net> Cc: questions@freebsd.org, performance@freebsd.org Subject: Re: Low/Jerky performance in FreeBSD 7 Message-ID: <20080528071654.GH80973@obiwan.tataz.chchile.org> In-Reply-To: <4831A0A5.6040808@bulinfo.net> References: <4831A0A5.6040808@bulinfo.net>
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On Mon, May 19, 2008 at 08:45:41AM -0700, Yani Brankov wrote: > I recently updated to FreeBSD 7 and noticed that my box started to perform > as windows does under heavier loads. The mouse starts to be jerky when > compiling, window updates/redraws are slow and bump the CPU usage up to > 100%. I attributed this to the mga driver which comes with the distro in the > beginning. However, I later noticed the same happens even when X has not > been started. For instance, I start a kernel compile and the console mouse > becomes jumpy. All these have never happened before with FreeBSD on this > box. It has enough memory (1.5G) and relatively fast CPU (2.5GHz). I started > to think this may be originating from kernel level (irq handling, long times > in giant locked code during syscalls, etc). > > I am wondering whether it is only me who has hit this problem or it is more > common. It may be also related to hardware configuration, etc. I'm trying to > figure out. Try profiling your kernel with PMC: http://lists.freebsd.org/pipermail/freebsd-current/2006-February/061096.html Regards, -- Jeremie Le Hen < jeremie at le-hen dot org >< ttz at chchile dot org >
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