Firefox 57 and 58 shaping up to be the best Sync releases ever!

Richard Newman rnewman at
Wed Nov 8 03:06:02 UTC 2017

That's fantastic. Not only the level of quality — which I'm confident *is*
the highest ever — but also actually having useful metrics, and a team that
cares about them and moves the needle in the right direction.

I've seen some really impressive and professional engineering done by this
team in the past few months, to uncover and address some really tricky
problems, and you all know I'm not easily impressed.

Well done, all.

(Mark, I think you just earned yourself another three weeks of PTO! :D)

On Tue, Nov 7, 2017 at 3:56 PM, Mark Hammond <mhammond at> wrote:

> Thanks to our recent investments in telemetry and the hard work of the
> sync team while I was on PTO [1], I'm happy to report that Firefox 57 and
> 58 are showing the highest success rates for all versions post 54. (So
> maybe not "ever", but I suspect that's actually true).
> This is true for *every* engine other than the kinto-based
> extension-storage engine, which sadly is showing the worst success rates
> for those versions - but that's a topic for a different thread.
> 0d9d8a4f0b9e9a1/Success-Failure-Error%20rates%20per%
> 20engine%2C%20by%20version.ipynb
> This is great news for the upcoming 57 release and testament to the unsung
> work the Sync team has been doing over the last few months. So
> congratulations on the great work done by everyone and thanks for all your
> contributions!
> Mark
> [1] I'm still trying to decide if me being on PTO is causation or
> correlation, and whether me taking another large chunk of PTO could help
> prove that? ;)
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