Date: Fri, 16 Sep 2005 12:25:43 -0400 From: Chuck Swiger <cswiger@mac.com> To: AK <lesha@ns.divo.ru> Cc: freebsd-questions@freebsd.org Subject: Re: "panic: getnewbuf: locked buf" on heavy load 5.4-STABLE Message-ID: <432AF207.6030908@mac.com> In-Reply-To: <200509161909.10463.lesha@ns.divo.ru> References: <200509161254.14108.lesha@ns.divo.ru> <432AE77E.2030509@mac.com> <200509161909.10463.lesha@ns.divo.ru>
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AK wrote: > Hello! Hello. > On Friday 16 September 2005 18:40, Chuck Swiger wrote: >> Please read "man crash" and the part of the handbook which talks about how >> to obtain a crashdump or backtrace with more information about the panic >> you see. >> >> You might consider putting both a backtrace and a dmesg from the system on >> the web somewhere, and post links to that. > > To get a crashdump I should have swapspace >= total ram. > Currently it is only 2G, I'm trying to think of smth. to get more swapspace. > dmesg is available @ http://getfile.biz/dmesg.txt Take a look at /boot/loader.conf, you can limit the amount of physical RAM FreeBSD uses to less than 2GB for long enough to get a valid dump, assuming the crash is easily reproducable. >>>For some reason my 5.4 STABLE is dying each 4-5 hours with panic above. >>>This is big Web server with Apache configured to 1500 MaxClients. All >>>kernel tunings suggested for high load servers by freebsd handbook are in >>>place. Hardware is Intel server board, P4-3.0 cpu with HT off, 3Gb ram, >>>1eide, 2sata. >> >> By the way, you don't have enough RAM to handle 1500 concurrent Apache >> processes, even with a minimal config (ie, no SSL, no mod_perl, no PHP). > > Mem: 1203M Active, 1293M Inact, 383M Wired, 125M Cache, 112M Buf, 4340K Free > Looks like enough to me... Setting MaxClients to a really high number doesn't mean you actually have 1500 httpd's running at that point in time. What does "ps auxww | grep httpd | wc -l" say? -- -Chuck
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