[ntp:questions] PPS kit for 2.6 linux kernels?
Richard B. gilbert
rgilbert88 at comcast.net
Fri Apr 13 00:23:35 UTC 2007
Hal Murray wrote:
>>Last time when I looked at it, it had no support for kernel PPS
>>("hardpps()"). That's what I also had a long time before. I haven't checked
> I've never understood this area. Why do I want a hardpps in the kernel?
> Maybe in the old days ntpd couldn't get enough CPU cycles on busy
> machines. Is that a serious problem today?
No. Even the hardware of ten to fifteen years ago has sufficient
capacity to run ntpd. I run ntpd on Sun Ultra 10 machines with 440 MHz
CPU's (late 1990's vintage). You could probably run ntpd on an 80486
processor if you:
a. could still find one and,
b. could equip it with enough RAM.
Ntpd runs at elevated/real-time priorities and needs, perhaps, 1% of the
CPU or even less on modern hardware.
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