On Mon, Feb 11, 2013 at 7:11 PM, Erik Auerswald
<auerswal@xxxxxxxxxxxxxxxxx> wrote:
> Hi Ari,
>
>
> On 02/12/2013 12:54 AM, Ari Heitner wrote:
>> Symptom: seemingly randomly, up to a few times a day, the network
>> connection just chokes for about 30 seconds.
>
> Just an idea: check the number of currently active NAT sessions. Maybe this
> hits a limit, some older sessions time out and everything works again.
Have been running netstat-nat -n to take a look at things, both during
normal operations and during the chokes - below is for normal
operations
camelot:~# netstat-nat -n | wc -l
374
camelot:~# netstat-nat -n | grep tcp | wc -l
269
camelot:~# netstat-nat -n | grep ESTABLISHED | wc -l
115
At least once through a choke I saw the total number of connections
stay about static just under 400, then increase slowly after things
started flowing again. But on the most recent choke, the number of
connections did skyrocket, hitting about 1000 tcp connections, before
things came down again.
Is anyone aware of a hard limit set anywhere that I could check/control?
Further suggestions appreciated...I'm looking for new diagnostic
directions (I had never run netstat-nat till yesterday)
cheers,
Ari
--
Ari Heitner
Director of Technology
www.NCSY.ca - www.TorahHigh.org
w: 905.761.6279 x223 m: 647.202.1998
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