74 hours till next "No Buffer Space Available" reboot ...
Marc G. Fournier
scrappy at freebsd.org
Sat Apr 14 03:30:03 UTC 2007
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- --On Sunday, April 08, 2007 23:04:42 -0400 Dave <dmehler26 at woh.rr.com> wrote:
> 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?
> ----- Original Message ----- From: "Marc G. Fournier" <scrappy at freebsd.org>
> To: <freebsd-stable at freebsd.org>
> Cc: "Chris" <chrcoluk at gmail.com>; "Thiago Esteves de Oliveira"
> <thiago at lamce.coppe.ufrj.edu.br>
> Sent: Sunday, April 08, 2007 10:28 PM
> Subject: 74 hours till next "No Buffer Space Available" reboot ...
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>> 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
>> with your servers? Thiago, I believe you ended up reverting to an older
>> to clear up the situation?
>> I've included my 'netstat -m' report ... from it, it doesn't look to me
>> 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?
>> that fixed it for you, or just prolonged until it happens again? How did
>> set this? I've checked both the man pages for ifconfig and fxp, and don't
>> 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
>> Email . scrappy at hub.org MSN . scrappy at hub.org
>> Yahoo . yscrappy Skype: hub.org ICQ . 7615664
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Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
Email . scrappy at hub.org MSN . scrappy at hub.org
Yahoo . yscrappy Skype: hub.org ICQ . 7615664
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