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Date:      Fri, 02 Oct 1998 22:47:19 -0700
From:      Mike Smith <mike@smith.net.au>
To:        Ian Kallen <ian@gamespot.com>
Cc:        freebsd-current@FreeBSD.ORG
Subject:   Re: occasional panics 
Message-ID:  <199810030547.WAA00756@word.smith.net.au>
In-Reply-To: Your message of "Fri, 02 Oct 1998 17:58:40 PDT." <Pine.BSF.3.95q.981002174807.21164E-100000@mail.gamespot.com> 

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> 
> I get these panics from time to time when this machine is heavily loaded
> with FTP traffic.  It's 3.0-19980520-SNAP patched for CAM with the FTP
> archive consisting of ccd'd disks.  I'll upgrade it sometime soon but in
> case this registers with anybody as something that might need fixing,
> here's the console output:

A quick guess would be that this is an out-of-mbuf-clusters situation.  
Have you tried increasing NMBCLUSTERS (or tracking the total usage?).

> Oct  2 14:45:42 fleabomb ftpd[24221]: getpeername (ftpd): Socket is not
> connected
> <<< **** about a dozen of these in that moment **** >>>
> Oct  2 14:49:15 fleabomb ftpd[24611]: getpeername (ftpd): Socket is not
> connected
> <<< **** and then blammo **** >>>
> 
> Fatal trap 12: page fault while in kernel mode
> fault virtual address   = 0x18
> fault code              = supervisor write, page not present
> instruction pointer     = 0x8:0xf013e345
> stack pointer           = 0x10:0xfde87ec8
> frame pointer           = 0x10:0xfde87ee8
> code segment
> 
>                         = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, def32 1, gran 1
>                         processor eflags        = interrupt enabled,
> resume, IOPL = 0
>                         current process         = 22123 (ftpd)
>                         interrupt mask          =
>                         kernel: type 12 trap, code=0
>                         Stopped at      _sosend+0x301:  movl
> $0,0x18(%ebx)
>                         db> ^C...
>                                  Segmentation fault (core dumped) 
> 
> 
> --
> Ian Kallen <ian@gamespot.com>				ICQ: 17073910
> 
> 
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-- 
\\  Sometimes you're ahead,       \\  Mike Smith
\\  sometimes you're behind.      \\  mike@smith.net.au
\\  The race is long, and in the  \\  msmith@freebsd.org
\\  end it's only with yourself.  \\  msmith@cdrom.com



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