On Tue, Sep 6, 2011 at 6:13 PM, TMK <eng...@gmail.com> wrote: > On Sat, Sep 3, 2011 at 2:06 PM, TMK <eng...@gmail.com> wrote: >> >>> Message: 1 >>> Date: Fri, 2 Sep 2011 10:05:42 +0200 >> >>> From: TMK <eng...@gmail.com> >>> Subject: Re: Fwd: Re: slow non-cached quries >>> To: bind-users@lists.isc.org >>> Message-ID: >>> >>> <caakgotgcoqdsz2fjc8y3kl+bj1guabsb0ohoxnu+dgt8fyf...@mail.gmail.com> >>> Content-Type: text/plain; charset="iso-8859-1" >>> >>> On Sep 2, 2011 9:48 AM, "TMK" <eng...@gmail.com> wrote: >>> > >>> > ---------- Forwarded message ---------- >>> > From: "Leonard Mills" <l...@yahoo.com> >>> > Date: Aug 31, 2011 8:15 PM >>> > Subject: Re: slow non-cached quries >>> > To: "TMK" <eng...@gmail.com> >>> > >>> > ;; Received 738 bytes from 192.112.36.4#53(G.ROOT-SERVERS.NET) in 3133 >>> > ms >>> > >>> > That pretty much is your delay. Look to your intermediate network >>> segments, especially any smart devices. >>> > >>> >> ________________________________ >>> >> From: TMK <eng...@gmail.com> >>> >> To: Mark Andrews <ma...@isc.org> >>> >> Cc: bind-us...@isc.org >>> >> Sent: Wednesday, August 31, 2011 4:44 AM >>> >> Subject: Re: slow non-cached quries >>> >> >>> >> On Tue, Aug 30, 2011 at 9:26 AM, TMK <eng...@gmail.com> wrote: >>> >> >>> >> >> Actually we have around 6 servers. All I need to do is to reduce the >> response time for the uncached responses as much as possible. So will the >> master cache server save maybe 200 sec of the response time which is good >> number is there any other way to force my server to contact gtld servers >> closer to its geoloc in Africa to reduce the round trip times is that >> possible > > one of the worst responses time we captured on our network was for > domain : a.root-servers.net (this is represent 5% of our dns traffic). > we got response time up to 30 sec. > > I know this queries can be generated by viruses. but I need to know: > > why the bind responding so slowly to such domain > 30 sec and if there > is way to reduce such time.(even if it is query from a virus) > > Regards, >
Dears, any recommendation would be much appreciated. Regards, _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
