Date: Wed, 2 Jan 2002 21:02:28 +0100 From: Bjarne Wichmann Petersen <freebsd.nospam@mekanix.dk> To: freebsd-questions@freebsd.org Subject: Performance issues; is something blocking? Message-ID: <20020102200130.PGZV1982.fepF.post.tele.dk@there>
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I'm starting to build up a major headache. I think I've got a gremlin in my system. XMMS often jitters (opening a webpage, pulldown-menu etc.), as if it only gets to transmit tiny pieces to the soundcard at a time. And I've tried everything to boost performance. Buffers are at max, and with the crossover-plugin I could observe that the buffer is always full. I've given XMMS top priority (rtprio -0 pid). And I've even run it as root. Still no decrease in the jitters, all the while the CPU sits idly by (it's rarely goes above 10% according to gkrellm and top). I've also fiddled arund with XFree86-4, installing GL etc. But the performance are far from impressive. I've tested tuxracer and gltron. With all the bells and whistles turned off I can only get 9-11 FPS (HW-accelerated). And the strange part, it's the same whether I run it at 640x480 or 1600x1200 (both 16-bit). And this on a 800 MHz Duron. Now the thought struck me that it might be X that had some faulty driver that's hogging some bus'/irq's whatever. So I've removed drm, dri and matrox mga-driver. I'm down running a plain vanilla X. XMMS still jitters. So right now I'm at a loss. I have no clue to why my system behaves so poorly. I've got this nagging feeling that *something*, either HW or SW, is blocking somewhere. But I'm no guru and don't know where to look. Are there some tool to test the system? Have I missed some kernel-option? Or do I just demand to much of my system? Bjarne -- Homepage: http://www.mekanix.dk To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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