Discourse mobile slow on 2013 Android phone

(Lkwg82) #1


I experienced some (for me serious delays) in the rendering performance. For example this thread in the syncthing forum: SSL Certs discovery v4 vs v6 - General - Syncthing Forum.

I use the chrome on samsung s4.

(screenshot of developer tools), rendertime ~11s, without js ~1s (at home over wlan)

Thx in advance!

(Rafael dos Santos Silva) #2

I can be wrong but on a early 2013 phone, with 1.5GHz processor this is bad but kinda expected?

How is the timing loading meta.discourse.org and try.discourse.org ?

(Lkwg82) #3

This phone has been 3years ago an high end phone. What is the phone distribution here on this site? Maybe there are less powerful phones.

Mobile design is IMHO not only about the responsive layout. It is also about speed/bandwidth and hardware limitations on these devices.

  1. meta.discourse.org: WebPagetest Test Result - Frankfurt : meta.discourse.org - 03/30/16 19:51:42
  2. try.discourse.org: WebPagetest Test Result - Frankfurt : try.discourse.org - 03/30/16 19:55:21
  3. forum.syncthing.org: http_://www.webpagetest.org/result/160330_YB_191aff8be451ac26636f4b115f2cc018/

You can see there is timerange with 100% cpu.

P.S. forum.syncthing is the fastest

(Régis Hanol) #4

Well, you have to take into account the speed of light here.

You are comparing the speed between Frankfurt :left_right_arrow: San Francisco and Frankfurt :left_right_arrow: Amsterdam.

(Rafael dos Santos Silva) #5

This tests are using the chrome emulation, and not real devices too.


This gives 7s with a cold cache.

Discourse is working on improving this:

(Lkwg82) #6

ok, so you know about. I currently switched to the js-less version. At this point an app makes sense … a lot!