launchpad-dev team mailing list archive

["Francis J. Lacoste" <francis.lacoste@xxxxxxxxxxxxx>]

I agree with Robert, we should not have more than 2 hours of down time. Let's 
revert the patch if that is the case.

-- 
Francis J. Lacoste
francis.lacoste@xxxxxxxxxxxxx

On October 6, 2010, Robert Collins wrote:
> On Wed, Oct 6, 2010 at 7:52 PM, Stuart Bishop
> 
> <stuart.bishop@xxxxxxxxxxxxx> wrote:
> > On Mon, Oct 4, 2010 at 9:42 AM, Edwin Grubbs <edwin.grubbs@xxxxxxxxxxxxx> 
wrote:
> >> Hi Stuart,
> >> 
> >> Do you have the staging db restore time that we use to announce the
> >> estimated downtime for the Launchpad release?
> > 
> > This is a tricky one to estimate. There is a large change in the
> > pipeline that on staging took 3 hours last time it ran. However, this
> > patch should run much faster on the production hardware (the slowness
> > is rebuilding indexes on the 600 million rows of the BranchRevision
> > table).
> > 
> > So based on this, I would guess up to 5 hours.
> > 
> > However, we have also upgraded to PG 8.4. We should get a better
> > timing this weekend under PG 8.4.
> 
> 5 hours downtime is -huge- right after Ubuntu releases.
> 
> Lets roll that patch back and discuss alternate approaches, if the
> indication on Monday is that we're looking at more than an hours total
> downtime.
> 
> -Rob
> 
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