Date: Sat, 14 Apr 2007 00:29:59 -0300 From: "Marc G. Fournier" <scrappy@freebsd.org> To: Dave <dmehler26@woh.rr.com> Cc: freebsd-stable@freebsd.org Subject: Re: 74 hours till next "No Buffer Space Available" reboot ... Message-ID: <CE79C2A9575F9D11352CD8EF@ganymede.hub.org> In-Reply-To: <000301c77a53$d2219940$0200a8c0@satellite> References: <E00C6EF43E580E18DDEE6E3E@ganymede.hub.org> <000301c77a53$d2219940$0200a8c0@satellite>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - --On Sunday, April 08, 2007 23:04:42 -0400 Dave <dmehler26@woh.rr.com> wrote: > Hello, > This is what i get for catching this late. Can you describe your > situation? I've got a server, router actually running 6.1-p6 i believe, and > lately it's been doing this stop. I can't be any more specific than that, > because that's all i know. The box just goes unresponsive, i can get a login > prompt on the console, but it's unresponsive. I have to reboot it. This has > occurred twice now and i'm starting to get concerned. I've ruled out ram, i > recently replaced it's ram for an unrelated reason so i don't think that's > it. If your situation is similar can you let me know what you tried? This is a different situation, I think ... first, I'm running 6.2-STABLE, as of about last week, so a much newer kernel then you are running ... and in my case, at least, I can still login to the machine using ssh and force a reboot remotely ... it doesn't seem to be a 'solid hang' ... if I were to hazard a guess as to what it "feels like" ... it feels like the network interface "buffer" has filled up, but isn't being released properly ... almost like a memory leak, but on the network ... if I leave it long enough, it will eventually require a tech to power cycle it, but if I catch it early enough, I can still get in to do a reboot ... But ... that said ... when you say "'get a login prompt on the console, but it's unresponse" ... do you mean that you can actually type in a userid, and possibly passwd, but after that it just hangs? > Thanks. > Dave. > > ----- Original Message ----- From: "Marc G. Fournier" <scrappy@freebsd.org> > To: <freebsd-stable@freebsd.org> > Cc: "Chris" <chrcoluk@gmail.com>; "Thiago Esteves de Oliveira" > <thiago@lamce.coppe.ufrj.edu.br> > Sent: Sunday, April 08, 2007 10:28 PM > Subject: 74 hours till next "No Buffer Space Available" reboot ... > > >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> >> In my case, I can almost set my watch to it (if I had a watch) ... every 3 >> days, 2 hours, it seems that I have to reboot this machine, as that is >> when the >> 'No Buffer Space Available' r starts to be generated ... >> >> There are two others (CC'd in this) that have experienced the same ... >> >> Chris / Thiago ... in your cases, are you finding that it happens as >> regularly >> with your servers? Thiago, I believe you ended up reverting to an older >> kernel >> to clear up the situation? >> >> I've included my 'netstat -m' report ... from it, it doesn't look to me >> like >> its an mbuf issue, or am I missing something? Is there something else >> that, in >> 74 hours, I can provide before I do the reboot? >> >> Chris, you mentioned reducing recvspace/sendspace to correct the issue? >> Has >> that fixed it for you, or just prolonged until it happens again? How did >> you >> set this? I've checked both the man pages for ifconfig and fxp, and don't >> see >> anything ... ah, just found it doing a 'sysctl -a' ... can you post your >> settings from /etc/sysctl.conf? or did you set it somewhere else? I'd >> like to >> try that and see if maybe that changes my '74 hours uptime', either good >> or bad >> ... >> >> >> >> # netstat -m >> 161/949/1110 mbufs in use (current/cache/total) >> 133/639/772/25600 mbuf clusters in use (current/cache/total/max) >> 133/396 mbuf+clusters out of packet secondary zone in use (current/cache) >> 0/0/0/0 4k (page size) jumbo clusters in use (current/cache/total/max) >> 0/0/0/0 9k jumbo clusters in use (current/cache/total/max) >> 0/0/0/0 16k jumbo clusters in use (current/cache/total/max) >> 306K/1515K/1821K bytes allocated to network (current/cache/total) >> 0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters) >> 0/0/0 requests for jumbo clusters denied (4k/9k/16k) >> 0/45/6656 sfbufs in use (current/peak/max) >> 0 requests for sfbufs denied >> 0 requests for sfbufs delayed >> 325 requests for I/O initiated by sendfile >> 731 calls to protocol drain routines >> >> >> - ---- >> Marc G. Fournier Hub.Org Networking Services >> (http://www.hub.org) >> Email . scrappy@hub.org MSN . scrappy@hub.org >> Yahoo . yscrappy Skype: hub.org ICQ . 7615664 >> -----BEGIN PGP SIGNATURE----- >> Version: GnuPG v1.4.5 (FreeBSD) >> >> iD8DBQFGGaTD4QvfyHIvDvMRAm3jAKDtZk1IgW3DbMGGKASiSsbNV7Ok3QCgtvwK >> JSuRYW1Af0lfFK2QvYMo9v8= >> =3DwH >> -----END PGP SIGNATURE----- >> >> _______________________________________________ >> freebsd-stable@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-stable >> To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > - ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email . scrappy@hub.org MSN . scrappy@hub.org Yahoo . yscrappy Skype: hub.org ICQ . 7615664 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFGIEq34QvfyHIvDvMRAo+uAKDTevbmYP2q7p7tvO674RMlFoiPpACgoCVY cvG08TsmvMN/iwBI3BVEEeo= =0r5p -----END PGP SIGNATURE-----
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