RE: [EXTERNAL] Re: Tuning suggestions for high-core-count Linux servers

2017-06-01 Thread Browne, Stuart
> -Original Message- > From: Plhu [mailto:p...@seznam.cz] > a few simple ideas to your tests: > - have you inspected the per-thread CPU? Aren't some of the threads > overloaded? I've tested both the auto-calculated values (one thread per available core) and explicitly overridden

RE: Tuning suggestions for high-core-count Linux servers

2017-06-01 Thread Browne, Stuart
> -Original Message- > From: Mathew Ian Eis [mailto:mathew@nau.edu] > > > Basically the math here is “large enough that you can queue up the > 9X.XXXth percentile of traffic bursts without dropping them, but not so > large that you waste processing time fiddling with the queue”.

RE: Stop Reverse resolution query Logging

2017-06-01 Thread Darcy Kevin (FCA)
BIND has no way of differentiating these queries, since reverse-lookup queries aren't "special". But certainly, if you syslog rather than writing directly to a file, there are syslog daemons that can filter, based on regex'es and the like.

Re: Stop Reverse resolution query Logging

2017-06-01 Thread Mark Andrews
In message <88ef58f000ec4b4684700c2aa3a73d7a08180abd2...@w2008dc01.colliniconsulting.lan>, Job writes: > Dear guys, > > is there a way in Bind 9 to stop logging (to bind.log standard file) all the > in-addr.arpa queries? > We would like to log everything else but not the reverse resolution

Re: Tuning suggestions for high-core-count Linux servers

2017-06-01 Thread Mathew Ian Eis
Howdy Stuart, > Re: net.core.rmem - I'd love to figure out what the math here should be. 'X > number of simultaneous connections multiplied by Y socket memory size = rmem' > or some such. Basically the math here is “large enough that you can queue up the 9X.XXXth percentile of traffic bursts

Re: Stop Reverse resolution query Logging

2017-06-01 Thread Rick Dicaire
Tried empty-zones-enable yes; in named.conf? On Thu, Jun 1, 2017 at 10:28 AM, Job wrote: > Dear guys, > > is there a way in Bind 9 to stop logging (to bind.log standard file) all the > in-addr.arpa queries? > We would like to log everything else but not the reverse

Stop Reverse resolution query Logging

2017-06-01 Thread Job
Dear guys, is there a way in Bind 9 to stop logging (to bind.log standard file) all the in-addr.arpa queries? We would like to log everything else but not the reverse resolution queries. Thank you! F ___ Please visit

Re: Tuning suggestions for high-core-count Linux servers

2017-06-01 Thread Plhu
Hello Stuart, a few simple ideas to your tests: - have you inspected the per-thread CPU? Aren't some of the threads overloaded? - have you tried to get the statistics from the Bind server using the XML or JSON interface? It may bring you another insight to the errors. - I may have missed

RE: Tuning suggestions for high-core-count Linux servers

2017-06-01 Thread Browne, Stuart
Cheers Matthew. 1) Not seeing that error, seeing this one instead: 01-Jun-2017 01:46:27.952 client: warning: client 192.168.0.23#38125 (x41fe848-f3d1-4eec-967e-039d075ee864.perf1000): error sending response: would block Only seeing a few of them per run (out of ~70 million requests). Whilst