[time-nuts] NTP and Windows 7
David J Taylor
david-taylor at blueyonder.co.uk
Fri Mar 28 00:27:59 EDT 2014
My question was not that it runs on XP, I was asking if you are running some
other software on your Win7 machine that might occasionally hit up the
system resources to the point where the system stutters.
Backup programs can do this. Applications that look for newer versions when
they load can cause a network hit. Lots of stuff. Java and Flash are
notorious for causing memory and timing problems.
My apologies, Dave. When I looked at the Web site I saw that the "works on
all Windows" was clearly stated.
You ask a good question, but in my experience with NTP load from other
software has not been a major issue (NTP runs at realtime priority), except
in the higher CPU temperature that extra load can cause, and therefore
change the frequency of the low-cost CPU crystal on the motherboard, and
hence NTP will run at a higher offset while it is correcting for the new
frequency. This effect clearly shows on one of my PCs which has a regular
disk-defragmentation job - 100% CPU and also higher disk load and
temperature - causing the spikes on the graphs:
The is a very old PC running Windows 2000 on a Pentium III 550 MHz -
remember those? Even then, the spikes are at the millisecond level, not the
fraction of a second level John was reporting.
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Email: david-taylor at blueyonder.co.uk
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