Hi,
I am new with unbound dns.i wanted to know about unbound dns prior to implement in our very high traffic networks.What is benchmarked QPS for unbound caching DNS server.Does anyone having high QPS rate with production use?Kindly share your experiences with unbound.
Thanks,
Ben
a message of 13 lines which said:
i wanted to know about unbound dns prior to implement in our very
high traffic networks.What is benchmarked QPS for unbound caching
DNS server.
It depends on so many things (for instance, how the underlying OS
handles UDP and IP) that I suggest that you benchmark yourself on your
machines. And publishing qps results for caching servers is much more
difficult than for authoritative servers since it depends on the cache
state *and* on remote name servers.
If you have a "very high traffic networks", you certainly also have a
lab and a team for such benchmarks.
Hi Stephane,
Thanks for your kind response.We plan to use 2 caching servers with load balancers to handle very high load,Can you suggest what are the parameters , we need to set at OS side.we are using centos 6.2.
What is generic benchmark for unbound and QPS for caching dns server?
Regards,
Ben
Zitat von Ben <benjo11111@gmail.com>:
Hi Stephane,
Thanks for your kind response.We plan to use 2 caching servers with load balancers to handle very high load,Can you suggest what are the parameters , we need to set at OS side.we are using centos 6.2.
Hello
on the OS side you have to assure that unbound get enough resources to operate on, so you might need to setup the allowed sizes for socket buffers, file handles and the like. For tuning unbound you should follow this one: http://www.unbound.net/documentation/howto_optimise.html
If there might be problems with many outstanding DNS queries (high number of clients) you should have a close look at the libevent section.
What is generic benchmark for unbound and QPS for caching dns server?
You might try something like this:
http://www.nominum.com/resources/measurement-tools
Regards
Andreas
Hi,
I installed unbound on centos 6 64 bit for caching name server and while running resperf from other client machine to measure performance , on client machine i got some many warning messages while running resperf test.
Warning: received a response with an unexpected id: 52512
Warning: received a response with an unexpected id: 50506
Warning: received a response with an unexpected id: 39792
Warning: received a response with an unexpected id: 53620
Warning: received a response with an unexpected id: 33758
Warning: received a response with an unexpected id: 27356
Warning: received a response with an unexpected id: 39133
Warning: received a response with an unexpected id: 348
Warning: received a response with an unexpected id: 50975
Warning: received a response with an unexpected id: 392
Warning: received a response with an unexpected id: 48404
Warning: received a response with an unexpected id: 16947
Warning: received a response with an unexpected id: 54853
Warning: received a response with an unexpected id: 40356
Warning: received a response with an unexpected id: 39020
Warning: received a response with an unexpected id: 38699
Warning: received a response with an unexpected id: 11174
Warning: received a response with an unexpected id: 8727
Warning: received a response with an unexpected id: 2884
Statistics:
Queries sent: 69644
Queries completed: 69644
Queries lost: 0
Run time (s): 100.000000
Maximum throughput: 856.000000 qps
Lost at that point: 94.13%
Same test i run for bind also , in that there is no warning from resperf.
Is there anything missing with unbound.conf or something ?
Regards,
Ben