[Unbound-users] High number of system context switches
janfrode at tanso.net
Fri Nov 14 11:13:57 UTC 2014
I just got a question off-list if I could share my configuration,
by someone that was only able to get 15Kqps measured by query-perf,
on an 8 core, 8GB physical server, with libevent2. I prefer answering
on-list, in hope that others might chime :-)
I don't think there's anything special about our configuration:
An IBM HS22 blade, with two quad-core Intel E5620 (2.40GHz), with HT
enabled, and 18GB memory.
Software is RHEL6-latest, with unbound from EPEL
(unbound-1.4.22-1.el6.x86_64, libevent-1.4.13-4.el6.x86_64). Only system
tuning is increasing net.nf_conntrack_max to 524288, and
net.netfilter.nf_conntrack_udp_timeout to 10.
Full unbound.conf attached.
My 30Kqps number is from real usage, not benchmark. So we might maybe
be hitting cached entries more often than a synthetic benchmark.
-------------- next part --------------
access-control: 0.0.0.0/0 allow
access-control: ::0/0 allow
More information about the Unbound-users