Re: another performance tuning question
-Original Message- From: Jeremy C. Reed jr...@isc.org Date: Friday, November 30, 2012 4:18 PM To: Adamiec, Lawrence ladam...@kentlaw.iit.edu Cc: bind-users@lists.isc.org bind-users@lists.isc.org Subject: Re: another performance tuning question On Fri, 30 Nov 2012, Adamiec, Lawrence wrote: I got similar results when running against the master server. Then why so many lost? Queries sent: 11000 queries Queries completed:8968 queries Queries lost: 2032 queries ... Percentage completed: 81.53% Percentage lost: 18.47% Look at your queryperf data file and figure out what is not hosted by you. Some of my systems get around 60,000 QPS with none lost. If really do host these on same system, and are really lost, then will need other research. Even if you are doing recursive work, your results are quite slow. you may want to look in your queryperf input to see what is causing problems. (It may not be a realistic, real world input set.) Based on your hosted by you reference, I assume 60K QPS was only resolving local names? If not I'd love to see the config. Some extra data points for the OP: I might have misread (or be mis-remembering since I last tested), but I think the default resperf query file includes ten million real-world entries -- if testing recursion, try it vs generating your own. If you are not just doing local queries, from experience server hardware (physical or virtual) and bandwidth play a big part in the numbers. More cores = more worker threads, faster connectivity to upstream servers = more responses. With the default resperf query file and drop rate capped at 1%, I was able to get ~20K qps w/ four vCPUs vs ~5K with one vCPU (VMware, RHEL, BIND 9.8). ___ 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
another performance tuning question
I must be doing something wrong. I ran queryperf and the results don't look right, 13 and 23 queries per second? What am I doing wrong? I ran the queryperf on the same machine that is running BIND. I got similar results when running against the master server. I ran the test one right after the other and here are the results. Statistics: Parse input file: once Ended due to: reaching end of file Queries sent: 11000 queries Queries completed:8968 queries Queries lost: 2032 queries Queries delayed(?): 0 queries RTT max: 4.868892 sec RTT min: 0.22 sec RTT average: 0.327400 sec RTT std deviation:0.806941 sec RTT out of range: 0 queries Percentage completed: 81.53% Percentage lost: 18.47% Started at: Fri Nov 30 14:18:21 2012 Finished at: Fri Nov 30 14:29:23 2012 Ran for: 662.497398 seconds Queries per second: 13.536657 qps # Statistics: Parse input file: once Ended due to: reaching end of file Queries sent: 11000 queries Queries completed:9797 queries Queries lost: 1203 queries Queries delayed(?): 0 queries RTT max: 5.042038 sec RTT min: 0.35 sec RTT average: 0.240968 sec RTT std deviation:0.721397 sec RTT out of range: 1 queries Percentage completed: 89.06% Percentage lost: 10.94% Started at: Fri Nov 30 14:35:53 2012 Finished at: Fri Nov 30 14:42:57 2012 Ran for: 423.880459 seconds Queries per second: 23.112648 qps Larry ___ 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
Re: another performance tuning question
On Fri, 30 Nov 2012, Adamiec, Lawrence wrote: I got similar results when running against the master server. Then why so many lost? Queries sent: 11000 queries Queries completed: 8968 queries Queries lost: 2032 queries ... Percentage completed: 81.53% Percentage lost: 18.47% Look at your queryperf data file and figure out what is not hosted by you. Some of my systems get around 60,000 QPS with none lost. If really do host these on same system, and are really lost, then will need other research. Even if you are doing recursive work, your results are quite slow. you may want to look in your queryperf input to see what is causing problems. (It may not be a realistic, real world input set.)___ 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
