[OpenIndiana-discuss] NTPD and PPM issues?

[Mark]

On 28/05/2011 7:32 a.m., Dan Swartzendruber wrote:
> Andrew Gabriel wrote:
>>
>> It may be the only one which _notices_ it's having this issue.
>> Like it may be the only one which notices if a disk returns a
>> corrupted block.
>> You didn't say what the other OS's are.
>>
> Sorry, I should have provided more information.
>
> VM #1: OpenIndiana. Running ntpd version 4.2.5 - PPM messages seen.
> VM #2: Ubuntu 10.10. Running ntpd version 4.2.4 - no messages seen.
> VM #3: FreeBSD 8.2. Running ntpd version 4.2.4 - no message seen.
>
> Another point: this is on a quad-core 3.2ghz xeon. Very lightly loaded.
>
>
I've experienced serious time sync issues with Windows and linux on ESX 
over the years. Worst was causing AD/kerberos issues, with rapid clock 
skew causing ntp to move out of capture range and head into oblivion.

This is well documented by VMware.

I changed ntp settings for windows to increase to 10x the allowable 
drift, but this cannot be set in OI or linux.

My "fix" there was to turn off ntp, and run a cron job every 15 mins to 
set the clock with ntpdate.

Mark.

>
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