launchpad-dev team mailing list archive

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

Hi Robert,

Thank you very much for moving this forward!



On 12-05-29 12:43 AM, Robert Collins wrote:
> So, I finally made time today to progress the 5 second timeout effort
> a bit more today.
> 
> As of now, the *default* hard timeout for LP pages is 5 seconds. Pages
> with a 99th percentile larger than that have had a higher timeout set:
>  9 seconds, if the page's 99th percentile render time was over 9 seconds
>  Or the nearest second higher than the pages 99th percentile render time.
> 
> Specifically, a pageid with a 99th percentile render time of 6.1
> seconds would end up with a 7s hard timeout.
> 
> No change in developer behaviour is needed - this just enforces the
> hard timeout portion of the previously agreed upon decision: that new
> pages would be held to our target performance of 1s for their 99th
> percentile render time, with a hard timeout of 5 seconds.
> 
> The way this was done, was to record the page ids for all the slow
> page ids; the DB request to retrieve the 100 odd extra rules takes
> 3ms, and the render time for a basic page was not impaired on
> qastaging, so I don't expect any fallout. This is also good news for
> folk with lots of feature flags / rules: the system is scalable well
> beyond how we are using it today.
> 
> Cheers,
> Rob
> 
> _______________________________________________
> Mailing list: https://launchpad.net/~launchpad-dev
> Post to     : launchpad-dev@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~launchpad-dev
> More help   : https://help.launchpad.net/ListHelp


-- 
Francis J. Lacoste
francis.lacoste@xxxxxxxxxx

Attachment: signature.asc
Description: OpenPGP digital signature