Date: Mon, 04 Nov 2002 16:41:57 +0200 From: Lefteris Tsintjelis <lefty@ene.asda.gr> To: Iasen Kostov <ikostov@otel.net> Cc: freebsd-net@FreeBSD.ORG Subject: Re: mbufs exhausted - kernel panic Message-ID: <3DC68735.F2008CDA@ene.asda.gr> References: <20021104153320.L76062-100000@shadowhand.OTEL.net>
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You need to increase kern.ipc.nmbufs sysctl -w kern.ipc.nmbufs=... Iasen Kostov wrote: > > I've tested our LAN when I come to this: > I ran nbtscan 192.168.0.0/16 after a 2-3 secs kernel started printing > > "All mbufs exhausted, see tuning(7)". > if you cancel execution of nbtscan - everything is ok but: > > 10112/10112/10112 mbufs in use (current/peak/max): > 9822 mbufs allocated to data > 128/130/2528 mbuf clusters in use (current/peak/max) > 2788 Kbytes allocated to network (36% of mb_map in use) > 161 requests for memory denied > 0 requests for memory delayed > 8 calls to protocol drain routines > > and second after kernel paniced. > After reboot tried this again and nothing has happend. > Then I mounted a NFS directory exported from the other computer on the > network and tried nebtscan 192.168.0.0/16 again ... and kernel paniced > when I execute "ls" in the NFS mounted directory. > > Fatal trap 12: page fault while in kernel mode > . > . > . > current process = 272(ls) > ... > > I can't use this machine for dumping kernel core becouse it's > production server it should be up and running. But I'll try same at home. > > It seems that kernel mbuf are exhausted by the route cache or the > arpresolver becouse I can see a lot of unresolved arp requests in the > routing table. > > interface xl0 has 2 IPs > inet 212.36.9.x netmask 0xfffffff8 broadcast 212.36.9.x > inet 192.168.100.254 netmask 0xffff0000 broadcast 192.168.255.255 > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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