[Dxspider-support] Cluster hangs

Kelly Jones kelly at dxcentral.com
Sun Mar 6 22:06:07 GMT 2005


Now this is interesting.  While watching the log, I hung again during some 
simple PC16/17.  When it 'let go' 14 minutes later (this is not the same 
hang as I posted here earlier), I immediately hung again.  This time with 
the following log:

------------------

22:01:23 -> D N0VD-6 PC20^
22:01:25 <- I N0VD-6 PC19^0^N0VD-6^0^5452^H3^
22:01:25 -> D EA5FV-5 PC19^0^N0VD-6^0^5452^H24^
22:01:25 -> D IK2XDE-9 PC19^0^N0VD-6^0^5452^H24^
22:01:25 -> D VE3EY-7 PC19^0^N0VD-6^0^5452^H24^
22:01:25 -> D W8EX PC19^0^N0VD-6^0^5452^H24^
22:01:25 -> D W9NIU PC19^0^N0VD-6^0^5452^H24^
22:01:25 <- I N0VD-6 PC20^
22:01:25 -> D N0VD-6 PC19^1^N0VD^0^5451^H24^
22:01:25 -> D N0VD-6 PC16^N0VD^N0VD-5 - 1^W6EEN - 1^RK0LWW - 1^NU3A - 
1^OZ7ANT - 0^DL4TJ - 1^WA9NBU - 1^WA2QYO - 1^AA7A - 1^KG4NZR - 1^K3BZ - 
1^N5KDV - 1^K2CD - 1^N5FPP - 1^N9BAL - 1^W9OY - 1^K8SDX - 1^K0ZV - 1^H24^
22:01:25 -> D N0VD-6 PC16^N0VD^WS9V-3 - 1^N1HY - 1^NM1W - 1^K8ZTT - 1^KY6R 
- 1^K2ADA - 1^G3YBY - 1^W0HFG - 1^SM2OAN - 1^W9XA - 1^IK5SRF - 1^W2SR - 
1^K4QL - 1^KQ0B - 1^KC2TN - 1^KA3NRX - 1^NG6X - 1^PT2ADM - 1^H24^
22:01:25 -> D N0VD-6 PC16^N0VD^K4UTE - 1^W0TT - 1^KI8U - 1^OO7AMI - 
1^KA9CFD - 1^WK7E - 1^HA1DAE - 1^N2LA - 1^KG9Z-1 - 1^W7TS - 1^W7JAM - 
1^AA6YQ - 1^W5JAW - 1^DF9OX - 1^N6RC - 1^W2QO - 1^N8IW - 1^H24^
22:01:25 -> D N0VD-6 PC22^
22:01:25 N0VD-6 channel func  state init -> normal
22:01:26 -> D N0VD-6 PC51^N0VD-6^N0VD^1^
22:01:27 connect 366: Welcome to the DX Central Cluster!
22:01:27 Visit http://www.dxcentral.com for more information.
22:01:27 Your callsign:
22:01:27 connect 366: timeout set to 60
22:01:28 connect 360: KB9RNO
22:01:28 DXChannel KB9RNO created (61)
22:01:28 <- A KB9RNO telnet
22:01:28 -> B KB9RNO 0
22:01:28 -> E KB9RNO 0
22:01:28 -> D KB9RNO PC18^DXSpider Version: 1.51 Build: 58.323^5451^
22:01:28 KB9RNO channel func  state 0 -> init
22:01:32 <- I IK2XDE-9 PC51^N0VD^IK2XDE-9^0^
22:01:34 <- I KB9RNO PC19^0^KB9RNO^0^5959^H3^
22:01:34 -> D EA5FV-5 PC19^0^KB9RNO^0^5959^H24^
22:01:34 -> D IK2XDE-9 PC19^0^KB9RNO^0^5959^H24^
22:01:35 connect 367: Welcome to the DX Central Cluster!
22:01:35 Visit http://www.dxcentral.com for more information.
22:01:35 Your callsign:
22:01:35 connect 367: timeout set to 60
22:01:35 connect 367: sm2oan

-----------------

As you can see, there is something about SM2OAN that causes me to hang (or 
it would appear that way).

Kelly




At 01:14 PM 3/6/2005, you wrote:
>On Sun, 2005-03-06 at 11:10 -0700, Kelly Jones wrote:
> > 7%07
> > 17:58:14 -> D WS9V DX de
> > DL6RAI:    21354.9  W5KFT                                       1758Z%07%07
> > 17:58:14 connect 803: Welcome to the DX Central Cluster!
> > 17:58:14 Visit http://www.dxcentral.com for more information.
> > 17:58:14 Your callsign:
> > 17:58:14 connect 803: timeout set to 60
> > 17:58:14 connect 803: sm2oan
>
>Now this *is* interesting. At this point the code is doing a
>'getpeerhost' call. I am wondering, in best tradition of code creep, on
>'modern' versions of glibc, this means that a reverse DNS lookup is
>being performed? These are notoriously slow and, worse, syncronous.
>
>
>
>
>_______________________________________________
>Dxspider-support mailing list
>Dxspider-support at dxcluster.org
>http://www.tobit.co.uk/mailman/listinfo/dxspider-support




More information about the Dxspider-support mailing list