**net** Re: Outbound TCP issue, potentially related to'FreeBSD-SA-05:08.kmem [REVISED]'

[Matt Ruzicka]

Great, thank you very much for the advice and attention on this issue.  I
very much appreciate it.

The short term results on these seem very good.

Thanks again.

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

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On Fri, 13 May 2005, Maxim Konovalov wrote:

> [...]
> > When I check the vmstat while getting errors from the netcat script I get
> > this.
> >
> > -->vmstat -z | grep -i sock                           2005/05/13 13:33:20
> > socket:          224,    16424,  16438,      0,  1150867
>
> Limit ---------------------^^^^^
> Current ---------------------------^^^^^
>
> > Here is my vmstat -z in a "normal" state.
> >
> > ITEM            SIZE     LIMIT    USED    FREE  REQUESTS
> [...]
> > socket:          224,    16424,   3621,  12817,  1167053
>
> [...]
> > And during the failures..
> >
> > ITEM            SIZE     LIMIT    USED    FREE  REQUESTS
> [...]
> > socket:          224,    16424,  16430,      8,  1201620
>
> [...]
> > Am I pretty much just looking at a tuning issue at this point I assume?
>
> 1) Use a persistent connection if possible.
>
> 2)
>
> /etc/sysctl.conf:
> 	net.inet.tcp.msl="5000"
> 	net.inet.ip.portrange.last="50000"
>
> perhaps
>
> /boot/loader.conf:
> 	kern.ipc.maxsockets="32768"
>
> --
> Maxim Konovalov
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