Re: random latency in named

p. -Original Message- From: Mathew Ian Eis Date: Friday, May 22, 2015 at 11:33 AM To: "bind-users@lists.isc.org" Cc: Tony Finch Subject: Re: random latency in named > >-Original Message- >From: Tony Finch >Date: Friday, May 22, 2015 at 2:32 AM >To: Mat

Re: random latency in named

-Original Message- From: Tony Finch Date: Friday, May 22, 2015 at 2:32 AM To: Mathew Eis Cc: "bind-users@lists.isc.org" Subject: Re: random latency in named >Mathew Ian Eis wrote: >> >> * The OS is RHEL 6.6; we just updated the kernel to >> 2.6.32-50

Re: random latency in named

Mathew Ian Eis 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

Re: random latency in named

Hi, Mathew-- On May 21, 2015, at 3:01 PM, Mathew Ian Eis wrote: > Hi BIND, > > I’ve been trying to track down the source of random latency in our production > servers, without much luck. At random intervals - several times an hour - > named appears to suddenly stop processing queries for aroun

random latency in named

Hi BIND, I’ve been trying to track down the source of random latency in our production servers, without much luck. At random intervals - several times an hour - named appears to suddenly stop processing queries for around 0-2500ms, only to resume moments later. This of course introduces latency