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Date:      Thu, 5 Sep 2002 18:42:56 -0700
From:      Ulf Zimmermann <ulf@Alameda.net>
To:        Richard Chew <rchew@telstra.net>
Cc:        Wahyu Hidayat <wahyuhid@yahoo.com>, freebsd-questions@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG
Subject:   Re: running out of mbuf
Message-ID:  <20020905184255.O1069@seven.alameda.net>
In-Reply-To: <5.1.1.6.2.20020906113915.040d71b8@gomer.telstra.net>; from rchew@telstra.net on Fri, Sep 06, 2002 at 11:41:17AM %2B1000
References:  <20020906013248.24028.qmail@web40007.mail.yahoo.com> <5.1.1.6.2.20020906113915.040d71b8@gomer.telstra.net>

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On Fri, Sep 06, 2002 at 11:41:17AM +1000, Richard Chew wrote:
> Hi
> 
>  From your message below, you seem to be running out of mbuf clusters.
> 
> You need to modify NBMCLUSTERS in your kernel config file in 
> /usr/src/sys/i386/conf/ and set
> 
>          options NBMCLUSTERS=dd
> 
> where dd is a number greater than the current max. Just how much will 
> depend on your particular circumstances.
> 
> Recompile the kernel and that should be all.

You should also be able to raise this via sysctl, the variable
kern.ipc.nmbclusters from what I remember.

> 
> Hope this helps.
> 
> Thanks.
> 
> Richard
> 
> At 06:32 PM 5/09/2002 -0700, Wahyu Hidayat wrote:
> >Hello,
> >
> >Firstly I am not a member of this mailling-list, so
> >please CC to me, or if this is not the right forum,
> >give me a direction where I  could post it.
> >
> >I have a machine running squid cache-server and apache
> >to answer squidGuard redirectors. When running under
> >heavy load it complains about mbuf:
> >
> >Sep  6 07:42:40 cache2 squid[5735]: aclMatchProxyAuth:
> >user 'imon' tries to use multple IP addresses!
> >Sep  6 07:43:22 cache2 squid[5735]:
> >aclDecodeProxyAuth: Disallowing empty passwo
> >rd,user is ''
> >Sep  6 07:43:26 cache2 last message repeated 2 times
> >Sep  6 07:43:50 cache2 /kernel: looutput: mbuf
> >allocation failed
> >Sep  6 07:44:43 cache2 squid[5735]:
> >aclDecodeProxyAuth: Unsupported proxy-auth sheme,
> >'owqeko=f|xjbd'
> >
> >I thought I've configured my kernel with enough mbuf,
> >but even one-half have not used yet. My netstat -m:
> >
> >22070/22544/81920 mbufs in use (current/peak/max):
> >         20490 mbufs allocated to data
> >         1580 mbufs allocated to packet headers
> >20462/20480/20480 mbuf clusters in use
> >(current/peak/max)
> >46596 Kbytes allocated to network (7% of mb_map in
> >use)
> >87932 requests for memory denied
> >274 requests for memory delayed
> >0 calls to protocol drain routines
> >
> >This problem bothers me, as our http traffic comes
> >from this server, and I have to reconfigure squid
> >processes (the same as restarting I think) to free up
> >mbuf.
> >
> >If you have any idea how to solve this please let me
> >know. Any help of reference would be greatly
> >appreciated.
> >
> >Best regards.
> >-why-
> >
> >__________________________________________________
> >Do You Yahoo!?
> >Yahoo! Finance - Get real-time stock quotes
> >http://finance.yahoo.com
> >
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> 
> 
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> 

-- 
Regards, Ulf.

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