[Pdns-users] PDNS Recursor on Debian / Low performance !!!URGENT!!!!

[Maroon Ibrahim]

Dear PDNS Admins/Users
I have installed PDNS Recursor on Debian Lenny 64-bit with kernel 2.6.32 (downloaded the PDNS Recursore .deb from www.powerdns.com webpage) and install it using dpkg -i pdn_recursor_3.3.deb 
As for the setup, all went fine so far !!! 
But i ran queryperf -q 4000 -d queries (3million record) -l 120 and I noticed lots of query timed out and ended up with a very bad result almost 143 qps !!!! 
[Timeout] Query timed out: msg id 1010[Timeout] Query timed out: msg id 1012[Timeout] Query timed out: msg id 1013[Timeout] Query timed out: msg id 1014[Timeout] Query timed out: msg id 1015[Timeout] Query timed out: msg id 1017[Timeout] Query timed out: msg id 1018[Timeout] Query timed out: msg id 1019[Timeout] Query timed out: msg id 1021[Timeout] Query timed out: msg id 1022[Timeout] Query timed out: msg id 1023[Timeout] Query timed out: msg id 1024[Timeout] Query timed out: msg id 1025[Timeout] Query timed out: msg id 1026[Timeout] Query timed out: msg id 1027  Run time limit:       30 seconds  Ran through file:     0 times
  Queries sent:         44497 queries  Queries completed:    6043 queries  Queries lost:         38454 queries  Queries delayed(?):   0 queries
  RTT max:              12.458861 sec  RTT min:              0.000017 sec  RTT average:          0.838212 sec  RTT std deviation:    1.222863 sec  RTT out of range:     164 queries
  Percentage completed:  13.58%  Percentage lost:       86.42%
  Started at:           Sun Feb  6 09:19:55 2011  Finished at:          Sun Feb  6 09:20:40 2011  Ran for:              44.780163 seconds
  Queries per second:   134.948147 qps
DNS:/bind9/contrib/queryperf# 

Do I need to fine tune the kernel? or is there any tweaks in powerdns recursor i have missed ? do you recommend to manually compile powerdns recusor?? please advise 
it is really urgent 
Thank you for your cooperation




 		 	   		  
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