Date: Tue, 19 Mar 2002 16:38:22 -0800 From: Benjamin Krueger <benjamin@macguire.net> To: "Morse, Richard E." <REMORSE@PARTNERS.ORG> Cc: "'questions@freebsd.org'" <questions@freebsd.org> Subject: Re: Network issues... Message-ID: <20020319163822.A8203@rain.macguire.net> In-Reply-To: <375F68784081D511908A00508BE3BB17DDDCB4@phsexch22.mgh.harvard.edu>; from REMORSE@PARTNERS.ORG on Tue, Mar 19, 2002 at 10:56:42AM -0500 References: <375F68784081D511908A00508BE3BB17DDDCB4@phsexch22.mgh.harvard.edu>
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* Morse, Richard E. (REMORSE@PARTNERS.ORG) [020319 07:56]: > Now I'm even more confused. It seems to have reappeared on the network. > Between the last time I tried to ping (and received the error messages) and this > time (when it all worked) the only command that had to do with the network that > I ran was tcpdump... > > Still looking for ideas, > Ricky > > -----Original Message----- > From: Morse, Richard E. > Sent: Tuesday 19 March 2002 9:33 AM > To: 'questions@freebsd.org' > Subject: Network issues... > > > Hi! last night at around 1:36 in the morning, my freebsd backup server dropped > off the network. No error messages are to be found in any of the files in > /var/log, and amanda just notes "data timeout"s. When I try to 'ping' any > address, I get the following error: > > ping: sendto: no buffer space available > > The green light on the ethernet card (showing that there is a link) is lit. > > Can anyone shed any light on this? > > Thanks, > Ricky Ricky, it sounds like you're running low on mbufs,and I'm willing to bet that you'll find your system logs littered with messages from the kernel regarding mbuf allocation failures. To verify this is the case if you see this behavior again, type 'netstat -m' to see the current mbuf statistics. If you find that this is your problem and you're running a release below 4.5, you will need to recompile your kernel with 'options NMBCLUSTERS=' with a larger number that will suit your needs. (The default is 1024) The following url from the handbook should help you figure a good number to request: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/configtuning-kernel-limits.html -- Benjamin Krueger "Life is far too important a thing ever to talk seriously about." - Oscar Wilde (1854 - 1900) ---------------------------------------------------------------- Send mail w/ subject 'send public key' or query for (0x251A4B18) Fingerprint = A642 F299 C1C1 C828 F186 A851 CFF0 7711 251A 4B18 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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