Problem sometimes Freebsd crash

[Matt Ruzicka]

I don't have any experience with Bandwidth Manager so I'm not really sure 
what it should be doing in this case.  I can say that we had something 
similar happen to us a while back on our web servers with the same 
symptoms.  I wasn't really part of that project at the time, but I know we 
have the entry kern.ipc.nmbclusters="16384" in our /boot/loader.conf to 
specifically up the mbuffs.  I don't remember if we also needed to add 
anything to our kernel specifically as well though.

I'd check out the tuning man page as the error indicates to see what can 
be done to increase the mbufs.  It is likely that bwmgrd isn't able to 
affect the mbuf maximums because it is kernel or boot time setting and 
can't be changed once the box is running.

Good luck.

Matthew Ruzicka - Systems Administrator
Front Range Internet, Inc.
matt at frii.net - (970) 212-0728

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On Thu, 30 Mar 2006, Jorge Evangelista wrote:

> Hi friends,
>
> My name is Jorge, i am from Peru, excuse me for my english, I have a
> server with FreeBSD 4.11-RELEASE #2 and Bandwitdh Manager (bwmgrd),
> but I have many  problems with it, I have rise up mbuf clusters in my
> server to 16384 (It I have made in the file /boot/loader.conf), before
> It was configured to 12000. Now I do not have logs about
>
> Mar  3 20:42:57 trafico /kernel: All mbuf clusters exhausted, please
> see tuning(7).
> Mar  3 20:46:49 trafico /kernel: All mbuf clusters exhausted, please
> see tuning(7).
> Mar  3 20:46:52 trafico /kernel: All mbuf clusters exhausted, please
> see tuning(7).
> Mar  9 20:31:24 trafico /kernel: All mbuf clusters exhausted, please
> see tuning(7).
> Mar  9 20:31:27 trafico /kernel: All mbuf clusters exhausted, please
> see tuning(7).
>
> However,  sometimes my server still hang, crash. I have to reboot the
> server for that I work again. If I have enough memory, why bwmgrd no
> use it, I do not why it said 59 requests for memory denied
>
>
>
>
> There are some logs
>
> #netstat -m
>
> 1881/9050/16384 mbuf clusters in use (current/peak/max)
> 20364 Kbytes allocated to network (41% of mb_map in use)
> 59 requests for memory denied
> 0 requests for memory delayed
> 0 calls to protocol drain routines
>
>
> This is report of my server memory
>
> # muse -m
> Active:       34.305 MB
> Inactive:    171.328 MB
> Wired:       133.832 MB
> Reserved:      1.949 MB
> Cache:         0.000 MB
> Kernel:        0.133 MB
> Interrupt:     0.008 MB
> Buffer:      137.203 MB
>
> Total:      1252.453 MB
> Free:        912.988 MB
>
>
> ET/BWMGR Driver v3.25b
>
> Thanks, for your help.
>
> --
> "The network is the computer"
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