freebsd stable - Jan 2004 - All mbufs exhausted/Random spontaneous reboots started today

Sorry for the crosspost, not sure where this should go.  Please cc me in
replies because I am not subscribed.

Server was up almost 134 days and spontaneously rebooted this morning saying
"All mbufs exhausted, please see tuning(7)."  Had never seen it
before, read
up on it and figured something just happened causing a lot of memory usage
or something, chalked it up to an abnormality.

Took the opportunity to upgrade to the latest -STABLE and rebooted.

Server was up for 30 minutes and just rebooted AGAIN with the same
message(s)..

Jan 11 16:32:19 /kernel: All mbufs exhausted, please see tuning(7).
Jan 11 16:32:50 last message repeated 33 times
Jan 11 16:34:44 last message repeated 127 times

Do you have any idea what's causing this and how I can monitor/stop it?

Thank you..


Chris

On Sunday 11 January 2004 02:49 pm, Chris Byrnes wrote:
> Sorry for the crosspost, not sure where this should go.  Please cc me in
> replies because I am not subscribed.
>
> Server was up almost 134 days and spontaneously rebooted this morning
> saying "All mbufs exhausted, please see tuning(7)."  Had never
seen it
> before, read up on it and figured something just happened causing a lot of
> memory usage or something, chalked it up to an abnormality.
>
> Took the opportunity to upgrade to the latest -STABLE and rebooted.
>
> Server was up for 30 minutes and just rebooted AGAIN with the same
> message(s)..
>
> Jan 11 16:32:19 /kernel: All mbufs exhausted, please see tuning(7).
> Jan 11 16:32:50 last message repeated 33 times
> Jan 11 16:34:44 last message repeated 127 times
>
> Do you have any idea what's causing this and how I can monitor/stop it?
>
Could you have missed a security update and some one found your hole?

Kent

-- 
Kent Stewart
Richland, WA

http://users.owt.com/kstewart/index.html

Chris Byrnes wrote:
> Sorry for the crosspost, not sure where this should go.  Please cc me in
> replies because I am not subscribed.
> 
> Server was up almost 134 days and spontaneously rebooted this morning
saying
> "All mbufs exhausted, please see tuning(7)."  Had never seen it
before, read
> up on it and figured something just happened causing a lot of memory usage
> or something, chalked it up to an abnormality.
> 
> Took the opportunity to upgrade to the latest -STABLE and rebooted.
> 
> Server was up for 30 minutes and just rebooted AGAIN with the same
> message(s)..
> 
> Jan 11 16:32:19 /kernel: All mbufs exhausted, please see tuning(7).
> Jan 11 16:32:50 last message repeated 33 times
> Jan 11 16:34:44 last message repeated 127 times
> 
> Do you have any idea what's causing this and how I can monitor/stop it?
> 
Use netstat -m to chek the current configuration/load.

It's something like this:

----
191/8272/65536 mbufs in use (current/peak/max):
         186 mbufs allocated to data
         5 mbufs allocated to packet headers
170/8128/16384 mbuf clusters in use (current/peak/max)
^^^^^^^^^^^^^^
18324 Kbytes allocated to network (37% of mb_map in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
----

You can modify the number of mbufs with sysctl variable 
kern.ipc.nmbclusters.

Usually setting this on /boot/loader.conf

ex.:

kern.ipc.nmbclusters=16384

Check also tuning(7) ;)
> Thank you..
> 
> 
> Chris
> 
-- 
Einstein Oliveira                 einstein@yawl.com.br
______________________________________________________
Yawl Internet Ltda.            http://www.yawl.com.br/

On Sun, Jan 11, 2004 at 04:49:07PM -0600, Chris Byrnes wrote:
> Server was up almost 134 days and spontaneously rebooted this morning
saying
> "All mbufs exhausted, please see tuning(7)."  Had never seen it
before, read
> up on it and figured something just happened causing a lot of memory usage
> or something, chalked it up to an abnormality.
> 
> Took the opportunity to upgrade to the latest -STABLE and rebooted.
> 
> Server was up for 30 minutes and just rebooted AGAIN with the same
> message(s)..
> 
> Jan 11 16:32:19 /kernel: All mbufs exhausted, please see tuning(7).
> Jan 11 16:32:50 last message repeated 33 times
> Jan 11 16:34:44 last message repeated 127 times
> 
> Do you have any idea what's causing this and how I can monitor/stop it?
Latest STABLE? Interesting. I had similar problem in the past, but this
was fixed. Please obtain a crashdump and show backtrace.

(http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html#KERNELDEBUG-OBTAIN)


-- 
Pawe? Ma?achowski

On Sun, Jan 11, 2004 at 09:15:15PM -0200, Einstein Oliveira wrote:
> You can modify the number of mbufs with sysctl variable 
> kern.ipc.nmbclusters.
This will hide a problem, without fixing it.


-- 
Pawe? Ma?achowski