Re: PHP performance on Xen domU with mulitple vcpu

On Fri, Apr 11, 2025 at 10:40:23PM +0000, Emmanuel Dreyfus wrote:
> After one week of testing, one domU was never able to get ntpq -c kerninfo 
> reporting sync, but the local clock did not drift from the NTP server. 
> Two other domU were able to quickly sync and to keep it as is. The three
> domU are on three different dom0 with the same hardware.

One o two sane domU was hit by the bug ater 6.5 days of uptime.
offset to NTP server is -5s.

# ntpq -c kerninfo
associd=0 status=c613 leap_alarm, sync_ntp, 1 event, spike_detect,
pll offset:            0
pll frequency:         -114.557
maximum error:         2963.13
estimated error:       0.002
kernel status:         pll nano mode=fll
pll time constant:     10
precision:             1e-06
frequency tolerance:   495.911
pps frequency:         0
pps stability:         0
pps jitter:            0
calibration interval   0
calibration cycles:    0
jitter exceeded:       0
stability exceeded:    0
calibration errors:    0


-- 
Emmanuel Dreyfus
[email protected]