Re: [ntp:questions] ntp-4.2.6p3-1.el5 - minpoll local PPS source
Miroslav Lichvar mlich...@redhat.com wrote in message news:20110202133307.GM2248@localhost... On Sun, Jan 30, 2011 at 07:11:07PM -, Q wrote: My local PPS source is set for 'minpoll 4' (16 sec) this has had the knock on effect that the other network based servers have all decided to poll at 64sec intervals. I can confirm this with ntp-4.2.6p3 and a recent ntp-dev. But it seems to be a design decision to use similar polling interval for all sources, even when they have very different jitter. As others have said, a workaround is to set minpoll to 10 for the NTP sources. Alas sorry for the late reply. The box died just after I made that post and I've only just got it back up and running. At the moment its still with its default config - I'm just waiting for it to calm down a little before I start changing things again. Once I've changed it I'll let you know what happens how it behaves. Cheers ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] ntp-4.2.6p3-1.el5 - minpoll local PPS source
On Sun, Jan 30, 2011 at 07:11:07PM -, Q wrote: My local PPS source is set for 'minpoll 4' (16 sec) this has had the knock on effect that the other network based servers have all decided to poll at 64sec intervals. I can confirm this with ntp-4.2.6p3 and a recent ntp-dev. But it seems to be a design decision to use similar polling interval for all sources, even when they have very different jitter. As others have said, a workaround is to set minpoll to 10 for the NTP sources. -- Miroslav Lichvar ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
[ntp:questions] ntp-4.2.6p3-1.el5 - minpoll local PPS source
Having looked through some ntp doc's and lots of websites I'm a bit confused as to what I 'should' do. My local PPS source is set for 'minpoll 4' (16 sec) this has had the knock on effect that the other network based servers have all decided to poll at 64sec intervals. Most of the web sites I've read say I should leave the 'minpoll 4' statement for the PPS source, but the ntp docs talk about a bug being fixed with the SHM driver and that you need not set 'minpoll 4' for local PPS sources. Could anyone please let me know what I 'should' do. Extract of config file: #GPS TIME SOURCE server 127.127.28.0 mode 1 fudge 127.127.28.0 time1 0.62 refid GPS server 127.127.28.1 minpoll 4 fudge 127.127.28.1 refid PPS flag2 1 Cheers ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
Re: [ntp:questions] ntp-4.2.6p3-1.el5 - minpoll local PPS source
Q ..@.. wrote in message news:4d45b7cb$0$2534$da0fe...@news.zen.co.uk... Having looked through some ntp doc's and lots of websites I'm a bit confused as to what I 'should' do. My local PPS source is set for 'minpoll 4' (16 sec) this has had the knock on effect that the other network based servers have all decided to poll at 64sec intervals. Most of the web sites I've read say I should leave the 'minpoll 4' statement for the PPS source, but the ntp docs talk about a bug being fixed with the SHM driver and that you need not set 'minpoll 4' for local PPS sources. Could anyone please let me know what I 'should' do. You could try lines such as: server 0.uk.pool.ntp.org iburst minpoll 10 server 1.uk.pool.ntp.org iburst minpoll 10 for the Internet servers. Cheers, David ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
