Date: Thu, 26 May 2005 09:10:44 +0200 From: Claus Guttesen <kometen@gmail.com> To: Palle Girgensohn <girgen@pingpong.net> Cc: amd64@freebsd.org Subject: Re: Dual Xeon EM64T crashes reliably w/ 5.x amd64 Message-ID: <b41c75520505260010534c475e@mail.gmail.com> In-Reply-To: <a85e535c015a0875830810b9e777364e@pingpong.net> References: <75f1b24e6dc7e145f7d36a874b825ab1@pingpong.net> <b41c7552050525150911915bf6@mail.gmail.com> <a85e535c015a0875830810b9e777364e@pingpong.net>
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> cooling, yes. You can see my previous posts for more info, but in > short, we run php apache-1.3, postgresql-8.0.3, perl-5.8.6 (amavisd), > postfix, named, clamd. httpd is very busy. >=20 > CPUTYPE?=3Dnocona > CFLAGS=3D -O -pipe > COPTFLAGS=3D -O -pipe I have CPUTYPE=3Dnocona, CFLAGS=3D -O2 -pipe -funroll-loops and COPTFLAGS= =3D -O2 -pipe -funroll-loops, but that should not make any difference. > Kernel is generic except some small details, see > http://lists.freebsd.org/pipermail/freebsd-amd64/2005-May/004949.html > I don't have many temp files, doubt it is the problem. It can be an > out-of-memory situation, possibly... I realize now it is swapping, 25% > of swap used. Must get more memory, I guess... can the machine crash > that hard when out of memory??? I saw the dmesg and noticed this at the bottom: Interrupt storm detected on "irq18: uhci2"; throttling interrupt source Interrupt storm detected on "irq16: uhci0"; throttling interrupt source This indicates USB, if so try adding usbd_enable=3D"NO" to /etc/rc.conf. Try limiting the amount of clients able to connect to your webserver, so you can serve those which do get access well. I have the following in my /usr/local/etc/apache/httpd.conf (I'm using apache): KeepAlive Off MaxClients 50 MaxClients is (avail. RAM / size of each process) minus some housekeeping. Your server should not swap. Since KeepAlive is off it can serve more clients than 50. > Would abandoning amd64 and installing a i386 system help? Probably yes? > I'd rather not, that's a substantial amount time to reinstall > everything... :( Don't know, but amd64 appears faster than i386 (when you can go with dual of course). Claus
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