Maintained by: NLnet Labs

[Unbound-users] Performance tuning tips?

Robert Edmonds
Thu Feb 7 21:51:27 CET 2013


Jaco Lesch wrote:
> This improved performance significantly with a jump from 3600 qps to
> 6200 qps and the system was not sluggish with this "workload" at
> all. The magic seems to have been the combination of
> "outgoing-range" and "num-queries-per-thread", the system load did
> drop from 28 to around 21 directly after this change.

can you clarify, is the workload a "production" resolver (so, a real
user base that is perhaps really only offering ~6k qps of load), or is
this a "benchmark" where the goal is to determine the maximum number of
qps that the server can handle?

either way, a load average of 21-28 sounds way too high.  perhaps
solaris has some sort of tool (dtrace?) comparable to the linux "perf"
tool that would help pinpoint the cause of the poor performance?

-- 
Robert Edmonds
edmonds at debian.org