Date: Sun, 19 Sep 1999 20:48:52 -0700 (PDT) From: Alfred Perlstein <bright@wintelcom.net> To: Joao Carlos <jcarlos@bahianet.com.br> Cc: questions@FreeBSD.ORG, hitech@bahianet.com.br Subject: Re: Out of mbuf clusters Message-ID: <Pine.BSF.4.05.9909192044391.6368-100000@fw.wintelcom.net> In-Reply-To: <000501bf030a$ac70e7a0$fa58dfc8@bahianet.com.br>
next in thread | previous in thread | raw e-mail | index | archive | help
I think if the kernel tells you to increase NMBCLUSTERS that's what you should be doing... add this to your kernel config and bring maxusers down to 256: options NMBCLUSTERS=8192 use a higher value if problems persist. In all seriousness you should attempt to enlist the help of a knowledgeable IRC operator who can assist you with these and further issues. and please don't crosspost in the future. good luck, -Alfred Perlstein - [bright@rush.net|alfred@freebsd.org] Wintelcom systems administrator and programmer - http://www.wintelcom.net/ [bright@wintelcom.net] On Sun, 19 Sep 1999, Joao Carlos wrote: > I'm running FreeBSD 3.3-STABLE, and compiled a kernel with 64 maxusers. It > gives me somethink like 1048 processes. I don't know if it's a bug, or > whatever, but i got crazy when i tested a program called CLONE on a IRC > Server running i this machine. > Before arriving 1024 connections on te IRCD, (NOTE: nothing more like httpd, > squid, etc were running), The machine crashed, with the following message: > > Sep 19 22:30:04 unix2 /kernel: Out of mbuf clusters - adjust NMBCLUSTERS or > increase maxusers! > > well, i recompiled the kernel with 512 maxusers (more than that config gives > warning... why?). > > I was waiting that at least more tha 1024 connections it would support, but > with a little more than 980 (couldn't get the exact number) the machine > crashed with the same message. Well, with 512 maxusers i have more than 8000 > processes... so.. why this? why does config warning abou kernels with more > than 512 maxusers? > I know that IRCD can have a bug that does not support more than 1024 > connections, but i think the FreeBSD boxes does not have to crash. The > machine goes down booting without umounting, and then i have to check forced > my disks. > > Can anyone tell me why is it happening? I'm afraid this can get something > exploitable for iRC Server machines!!!! > > Thanks > > Joao Carlos > jcarlos@bahianet.com.br > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.05.9909192044391.6368-100000>