Date: Sat, 8 Apr 2000 13:30:13 +0100 From: Per_Hallstrom_NV98ATe@teknikum.vaxjo.se (Per =?iso-8859-1?q?Hallstr=F6m?= NV98ATe) To: freebsd-questions@FreeBSD.org Subject: Strange kernel panics Message-ID: <msg63648.thr-1a5ce0f.4c5018@kungsmadskolan.se>
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Hi! I have had some problems with FreeBSD (sorry to say this). To make a long story short, i made a benchmarking test on a program (a kind of server) on my computer, a Pentium III 450, 128MB ram (non-ecc). Well, the benchmarking program was to test if the program I had written could handle much load (and not crash). So, the benchmarking program opened 10000-20000 connections (if the kernel hadn't paniced at this point it would have opened more). The kernel said that there was a page fault (#12) in kernel mode. Well, since I had done some experiments (and compiled the kernel with MaxUsers >512 just to test ;P), I thought that this was it. I recompiled it, MaxUsers 256. Now it says that there isn't enough NMBCLUSTERS (or something like that). Well, i recompiled it. It told me to raise MaxUsers, so I did, to 512. (If I set it >512 it gives me a warning.) It still says that it is out of NMBLUSTERS. And then it reboots. Okay, the kernel runs out of something. But why panic? Why don't kill the process causing it? Why panic? There must be some way to fix it.. I hope at least... =) Well, no computer is made for accepting 20000 connections/second (not a PIII 450 at least), but it is said that FreeBSD can handle load that would crush other systems... yeah right.. my father's win95 computer dosen't crash if I do the same test on it. The kernel dosen't complain at startup or anything, so there dosen't seem to be any conflict... (it complained one time when it said that my FPU wasn't available in kernel mode, but a reboot fixed it). I would be very thankful if someone knows why this happens. If anyone have a kernel config file that you know works, mail me... if that is the problem. And btw, it's FreeBSD 3.4.. maybe the problem is fixed in 4.0? /Per H To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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