Date: Mon, 10 Jan 2000 04:13:13 +0100 From: "Dave J. Boers" <djb@relativity.student.utwente.nl> To: Christian Carstensen <cc@devcon.net> Cc: freebsd-current@freebsd.org Subject: Re: freezing... Message-ID: <20000110041313.C655@relativity.student.utwente.nl> In-Reply-To: <Pine.BSF.4.10.10001100435320.367-100000@pauling.research.devcon.net>; from cc@devcon.net on Mon, Jan 10, 2000 at 04:48:08AM %2B0100 References: <20000110032017.A499@relativity.student.utwente.nl> <Pine.BSF.4.10.10001100435320.367-100000@pauling.research.devcon.net>
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On Mon, Jan 10, 2000 at 04:48:08AM +0100, Christian Carstensen wrote: > i'm using a ahc 7895 onboard on a tyan thunder 100. i've seen my cdrom > occasionally not coming up until power cycling. is this a known bug with > that controller? Mine is an AIC 7860 (i.e. 2940UA). I see my hard disk failing to come up occasionally, but only after I turn my power on after the system had been turned completely off (which is not often). > scsi performance is very bad on my system for a long time now. operating > on many small files, for example, my IBM DCAS-34330W is 100% busy with > only 1.2 MB/s. > i don't know why, but i suspect vinum in combination with some old scsi > devices to cause that. What I'm going to say here may be complete crap, but it has been on my mind for some time now, so I may just as well speak up with my suspicions. I have read on several occasions that people find -current performing very poorly lately. I recall someone comparing -current's network performance to that of 3.4 and finding almost a factor 2 difference. I myself have found the following facts lately: 1) scsi performance is down to 4 Mb/sec MAX, writing simply zero's (this used to be around 12 Mb/sec) 2) network performance (NIC = 3COM 3C905B-TX 100Mbit) is 5 Mb/sec MAX instead of the 8 Mb/sec I'm used to. 3) IDE UDMA66 performance is down to 12 Mb/sec writing zero's (this used to be near 16 Mb/sec). 4) buildworlds are at an all time slow. I haven't been able to compile a current in less than an hour for many weeks now. This used to be more like 40 minutes or so (make buildworld -j 9 on my smp system). Add to this the strange lockups we've been having recently that somehow seem i/o or load dependent. I'm no expert on this at all, but it seems legitimate to conclude that something is seriously wrong somewhere. It seems to me that this should _definitely_ get sorted out to the bottom before release time. Regards, Dave Boers. -- djb@relativity.student.utwente.nl To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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