[SSSD] Re: Monotonic clock for timed events

[Simo Sorce]

On Mon, 2016-10-10 at 10:04 +0200, Victor Tapia wrote:
> Hi list,
>
> I've faced a race condition when SSSD boots in a machine with a big
> clock drift. This is what I see:
> SSSD starts before the network is up, queries the LDAP server without
>
> success and sets a retry timer (~60 secs)
> 2. NTP starts and corrects the clock, 1 hour back for example.
> 3. SSSD takes ~60 secs + the drift correction (1 hour) to retry the
> connection.
>
> In this particular scenario the credentials cache is disabled, so the
> wait time to login is noticeable. How feasible would it be to use a
> monotonic clock for this kind of timed events?

We should use a monotonic clock for most internal events.

Simo.