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Date:      Tue, 27 Oct 1998 18:55:36 -0800
From:      David Greenman <dg@root.com>
To:        Mike Smith <mike@smith.net.au>
Cc:        Steven Yang <syang@directhit.com>, "'Open Systems Networking'" <opsys@mail.webspan.net>, "'freebsd-hackers@freebsd.org'" <freebsd-hackers@FreeBSD.ORG>
Subject:   Re: FW: Can't get rid of my mbufs. 
Message-ID:  <199810280255.SAA06432@implode.root.com>
In-Reply-To: Your message of "Tue, 27 Oct 1998 17:58:14 PST." <199810280158.RAA02572@dingo.cdrom.com> 

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>> Thanks for the info.  One question remains.  Suppose netstat -m tells me
>> that 7900/8050 mbuf clusters are in use.  Now suppose I stop all of the
>> important processes and let the machine stay idle for 2 hours.  Why does
>> netstat -m still tell me that 7900/8050 mbuf clusters are in use?
>> Basically, I'd wish it would say something like 99/8050 mbuf clusters in
>> use instead.  I already have MAXUSERS set to 512.  
>
>You have an mbuf leak somewhere, where mbufs are being allocated to 
>contain data but never being freed.

   We need more info before it can be detemined that there is a "leak". The
machine is trying to do more than 8 million connections/day, and there are
special considerations when trying to do that. 10000 mbuf clusters almost
certainly will not be enough. He may not be able to configure enough, in
fact, without changing the kernel VM layout.

-DG

David Greenman
Co-founder/Principal Architect, The FreeBSD Project

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