-----Original Message----- From: Tony Finch <d...@dotat.at> Date: Friday, May 22, 2015 at 2:32 AM To: Mathew Eis <mathew....@nau.edu> Cc: "bind-users@lists.isc.org" <bind-users@lists.isc.org> Subject: Re: random latency in named
>Mathew Ian Eis <mathew....@nau.edu> wrote: >> >> * The OS is RHEL 6.6; we just updated the kernel to >> 2.6.32-504.16.2.el6.x86_64, also with no effect. > >Is your server using a Haswell CPU? If so it might be the lost futex >wakeup bug discussed at the links below, in which case the problem might >go away if you upgrade to RHEL 6.6.z. > >https://groups.google.com/forum/#!topic/mechanical-sympathy/QbmpZxp6C64 >https://news.ycombinator.com/item?id=9542548 Nope, AMD here, but that probably wouldn¹t rule it out. I think I have a comment somewhere on that HN thread... It looks like the futex bug probably affects all architectures; just some more than others, as the actual kernel patch references ARM. Anyhow, I wish it had been that, but the 2.6.32-504.16.2.el6.x86_64 kernel didn¹t fix the issue. (6.6 2.6.32-504.16.2.el6.x86_64 kernel is the 6.6.z one): https://rhn.redhat.com/errata/rhel-server-6.6-errata.html https://rhn.redhat.com/errata/RHSA-2015-0864.html Thanks, Mathew Eis Northern Arizona University Information Technology Services _______________________________________________ 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
