coldlaunch.visuallyLoaded ------------------------- appName master v2.2 -------- ------ ---- Video 974 1020 Messages 1265 986 Settings 2545 2437 Gallery 866 1046 Music 1017 956 FM Radio 764 496 E-Mail 413 1973 Phone 846 754 Contacts 755 717 Clock 1186 1206 Calendar 1421 1342 Camera 1504 1297

[Blocking Requested - why for this release]:

Report: 2015/08/18 Flame-KK 319MB ------------------------- appName master v2.2 -------- ------ ---- Messages 1545 986 Settings 2669 2437 Video 1182 1020 Gallery 1139 1046 Music 1054 956 FM Radio 741 496 E-Mail 547 1973 Contacts 1149 717 Clock 1395 1206 Calendar 1543 1342 Camera 1465 1297 Dialer 769 Aries-KK 2G ---------------------------------------------------------------------- appName value memory device branch context -------- ----- ------ ------ ------ ----------------------------- Calendar 730 2048 aries master calendar.gaiamobile.org Contacts 565 2048 aries master communications.gaiamobile.org FM Radio 349 2048 aries master fm.gaiamobile.org E-Mail 250 2048 aries master email.gaiamobile.org Music 511 2048 aries master music.gaiamobile.org Clock 518 2048 aries master clock.gaiamobile.org Camera 651 2048 aries master camera.gaiamobile.org Dialer 305 2048 aries master communications.gaiamobile.org Video 710 2048 aries master video.gaiamobile.org Settings 1657 2048 aries master settings.gaiamobile.org Gallery 507 2048 aries master gallery.gaiamobile.org Messages 778 2048 aries master sms.gaiamobile.org

[Tracking Requested - why for this release]:

The approach to decrease loadtime: * check index.html to find out possible redundant or removable piece. (done) * check startup js to remove unnecessary code in startup Current diagnoses (and tasks that align with existing development goal): * remove USB switch/warning dialog in root panel (2.5) - due to UX change (will reduce size of loading) * remove BT APIv1 support (maybe after 2.5) - remove BT detection code and remove BT helper dependency (will reduce size of loading) * convert rest of pack-switch css to gaia-switch (will clean some css) I'd expect ~100ms improvement with above change. Need dig into js startup procedure to squash more improvement space.

According to Current state of performance in Gaia 2015/10/2 Settings v2.2 cold launch: 2474ms Settings current cold launch: 2950ms (~475ms regression) Settings v2.2 USS: 17.18MB Settings current USS: 17.54MB (acceptable)

We'll also check with raptor tool to see if make html import on demend (only load needed html/js) will save some loadtime.

According to test result, remove BTv1 API does not save loadtime

ums panel has been separated by bug 1194045

pack-switch has been removed by bug 1172349. Come with bug 1216435, the loadtime has decreased 100+ms

Please reopen if you need.