So with our latest changes we've also deferred the rendering of shields until the are first focused (tapped, in mobile). This should completely eliminate any page load bottleneck these were causing.

On 16 May 2014 15:19, "Jon Robson" <jrobson@wikimedia.org> wrote:
The % of time spent in these functions has been reduced somewhat
according to my latest profiling, but the MobileFrontend nth-child
selector /still/ exists so it's still ridiculously high on mobile.

I'm not quite sure at which point we say that we have succeeded in
improving VE mobile performance but when someone finally bothers
reviewing https://gerrit.wikimedia.org/r/131892 we should have a
better idea if mobile is on par with desktop.

On Fri, May 16, 2014 at 1:06 AM, Roan Kattouw <rkattouw@wikimedia.org> wrote:
> On Thu, May 15, 2014 at 3:58 PM, Jon Robson <jrobson@wikimedia.org> wrote:
>> I'm still waiting for Kaldari or someone in mobile to merge
>> https://gerrit.wikimedia.org/r/131892 before I can confirm the current
>> state.
>>
>> It definitely seems to be marginally improved on desktop and mobile
>> (with desktop benefiting most) after a few runs.
>>
> Cool. Earlier, you did some profiling and identified specific
> culprits. Are those now gone/different?
>
> BTW, I hear we're upgrading jQuery to 1.11, according to Timo this
> made our unit tests run faster and should make everything run faster
> in general.
>
> Roan