Re: PHP performance on Xen domU with mulitple vcpu

On Tue, Apr 08, 2025 at 02:09:44PM -0700, Greg A. Woods wrote:
> So if that's right then a changing maxerror means ntpd is constantly
> providing a new maxerror value to store.

It does, but on a sane value the value is bound to lower values, and
ntpd does sync:
associd=0 status=0615 leap_none, sync_ntp, 1 event, clock_sync,
pll offset:            0.812757
pll frequency:         -54.2365
maximum error:         142.553
estimated error:       0.69
kernel status:         pll nano
pll time constant:     8
precision:             1e-06
frequency tolerance:   495.911
(all other values are 0)

> Maybe the delta in maxerror is just telling us the system clock is
> "skewed", i.e. not running at the frequency it claims to run at, which
> would not be too surprising.

What is suprising is that it happens on a domU but not on another on 
the same dom0. 

-- 
Emmanuel Dreyfus
[email protected]