Date: Sun, 19 Sep 1999 22:15:51 -0600 From: FreeBSD -- The Power to Serve <geniusj@suarez.bestweb.net> To: "Joao Carlos" <jcarlos@bahianet.com.br>, <stable@FreeBSD.ORG>, <questions@FreeBSD.ORG>, <security@FreeBSD.ORG> Cc: <hitech@bahianet.com.br> Subject: Re: Out of mbuf clusters Message-ID: <99091922163202.70436@phreebsd.org> References: <000501bf030a$ac70e7a0$fa58dfc8@bahianet.com.br>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 CLONE huh? Well I guess I can help you anyway :).. There's another seperate option from maxusers to raise mbuf clusters.. use 'options NMBCLUSTERS=16384' or whatever number you want.. you can see how many you have by doing netstat -m. This should do it :) 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-stable" in the body of the message - -- - ----------------------------------------------------------------------------- Jason DiCioccio | geniusj@ods.org FreeBSD - The Power to Serve | http://www.freebsd.org PGP Key ID: 0xA96A4C04 | http://www.ods.org - ----------------------------------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: PGP 6.5.1 iQA/AwUBN+WnEHJvJ3WpakwEEQJtzACeKXk5aCq6bAzsYGEhKnEWwsJI9w4AoO82 UGL5uikzujAxIbCHxW+ZbC4B =EEiW -----END PGP SIGNATURE----- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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