Ugh, let me try that again (apologies if you got the half-composed version).
<lots of snip> > The lab uses Dell R430s running Fedora Core 23 with Intel X710 10GB NICs > and each populated with a single Xeon E5-2680 v3 2.5 GHz 12-core CPU. R630 chassis I believe, same NIC's, smaller processor (E5-2650v4@2.2Ghz). <snip> > The only major setting I've found which both helps performance and > improves consistency is to ensure that each NIC rx/tx queue IRQ is > assigned to a specific CPU core, with irqbalance disabled. I've been stopping irqbalance, and have confirmed that the rx/tx queue IRQ's aren't jumping around. > This is with a _single_ dnsperf client, too. The settings I use are > -c24 -q82 -T6 -x2048. However I do use a tweaked version of dnsperf > which assigns each thread pair (it uses separate threads for rx and tx) > to its own core. I didn't think of using -T. *tries that* .. > You may find the presentation I made at the recent DNS-OARC workshop of > interest: > > https://indico.dns-oarc.net/event/26/session/3/contribution/18 Reading it now. Many thanks. > You didn't mention precisely which 9.10 series version you're running. > Note that versions prior to 9.10.4 defaulted to a -U value of ncores/2, > but investigation showed that on modern systems this was sub-optimal so > it was changed to ncores-1. This makes a *very* big difference. BIND 9.10.4-P8. > kind regards, > > Ray Bellis > ISC Research Fellow Stuart _______________________________________________ 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
