[ntp:questions] problem with synchronizing two comps to each other
brad at stop.mail-abuse.org
Thu May 19 17:34:40 UTC 2005
At 4:25 PM +0000 2005-05-19, Bjorn Gabrielsson wrote:
> PPSKit-patch implements the kernel PPSAPI which is useful when you
> have a good GPS with PPS-signal attached to the computer. In which way
> does this relate to loosing timer interrupts? or the OPs question?
Sorry, I was under the impression that the PPSKit patches also
helped with the overall problem of losing interrupts. My bad.
> Lots of people run NTP on Linux with no problems.
And lots of people have problems with NTP on Linux.
> Lots of companys
> sell Linux based NTP-servers.
How many of those are not patched with the PPSKit? And of those
that are not patched, how many work well? And how many people have
resolved the networking issues with Linux?
I'm not saying that Linux won't work. However, it has a number
of well-known areas where it tends to have difficulties relative to
NTP. In addition, there are a much greater number of people using
Linux who are neophytes, and an there is increased ratio of neophytes
to experts. There are also some issues with the networking code in
current versions of Linux.
The result is a serious issue that needs to be addressed any time
someone talks about doing NTP using Linux.
If they're already an expert and they know what the PPSKit
patches do and whether or not they need them, then we're down to
things like the networking code, or problems inherent to anyone
trying to use desktop-grade computers as servers, or perhaps issues
internal to NTP itself.
Brad Knowles, <brad at stop.mail-abuse.org>
"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."
-- Benjamin Franklin (1706-1790), reply of the Pennsylvania
Assembly to the Governor, November 11, 1755
SAGE member since 1995. See <http://www.sage.org/> for more info.
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