Autonlab time sync

Predrag Punosevac predragp at andrew.cmu.edu
Thu Apr 19 14:30:39 EDT 2018


Yang Zhang <yz6 at andrew.cmu.edu> wrote:

> Hi Predrag,
> 
> Could you sync the time on the autonlab server with NTP?
> Its about 5 minute ahead.

Which server? The synchronization is turned on. Having an inaccurate
clock might mean that the server is dying. Also keep in mind that CMU
network guys firewall NTP protocol so our computing nodes are
synchronized from my time server which is fetching time using http
protocol (from obvious reasons).

Predrag

> 
> Thanks!
> BEst,
> Yang
> 
> > On Apr 15, 2018, at 8:14 PM, Predrag Punosevac <predragp at andrew.cmu.edu> wrote:
> > 
> > Dear Autonians,
> > 
> > I am not sure how many of you read PostgreSQL mailing lists but this is
> > one of the most interesting exchanges I came across in a long while.
> > 
> > https://www.postgresql.org/message-id/flat/CAEepm%3D0B9f0O7jLE3ipUTqC3V6NO2LNbwE9Hp%3D3BxGbZPqEyQg%40mail.gmail.com#CAEepm=0B9f0O7jLE3ipUTqC3V6NO2LNbwE9Hp=3BxGbZPqEyQg@mail.gmail.com
> > 
> > Long story short if you have any serious amount of data in a PostgreSQL
> > database you should be using ZFS found on IllumOS kernel (Open Solaris
> > derivative) or FreeBSD. As you know we in the Auton Lab run ZFS of
> > FreeBSD.
> > 
> > Best,
> > Predrag



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