anything in dmesg? have yo ｕｓｅｄ conntrack tools to check active connections ? (conntrack -L | wc -l) also check route cache, but dst overflow would show in your dmesg if that happens (use lnstat otherwise) . On Wed, Feb 13, 2013 at 1:27 PM, Ari Heitner <ari@xxxxxxx> wrote: > 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 > -- > To unsubscribe from this list: send the line "unsubscribe lartc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe lartc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
