Closed Bug 1068826 Opened 6 years ago Closed 6 years ago
[Flame][KK]Upon booting for first time, there are extra processes in the memory, possbly slowing the performance
STR: Flash a new build to the flame device. (for example, from here: https://pvtbuilds.mozilla.org/pvt/mozilla.org/b2gotoro/tinderbox-builds/mozilla-central-flame-kk-eng/latest/) connect the phone via USB, and send command 'adb shell b2g-ps' Expected: No Browser process, no Operatorvariant (at least after FTE), and only one homescreen process. Actual: APPLICATION SEC USER PID PPID VSIZE RSS WCHAN PC NAME b2g 0 root 208 1 236276 68544 ffffffff b6ef5894 S /system/b2g/b2g (Nuwa) 0 root 396 208 71576 7800 ffffffff b6ef5894 S /system/b2g/b2g OperatorVariant 2 u0_a900 900 396 80192 12868 ffffffff b6ef5894 S /system/b2g/b2g Browser 2 u0_a1002 1002 208 88664 11424 ffffffff b6f41894 S /system/b2g/plugin-container Homescreen 2 u0_a1073 1073 208 146536 32144 ffffffff b6ef1894 S /system/b2g/plugin-container Smart Collectio 2 u0_a1095 1095 208 94944 22516 ffffffff b6f3f894 S /system/b2g/plugin-container Homescreen 2 u0_a1100 1100 208 89432 15708 ffffffff b6e68894 S /system/b2g/plugin-container (Preallocated a 2 u0_a1102 1102 396 80160 16692 ffffffff b6ef5894 S /system/b2g/b2g Note: When the phone is restarted, those 3 processes are gone from memory. We suspect this might be the reason why the app performance is poor upon flashing a new build, but improves when the phone is rebooted. According to qDot, Operatorvariant applies variants to the system- only runs once on first boot. Version Info: Gaia 50666fa8bbbf3d346faff24f92ad8140a44a49d0 Gecko https://hg.mozilla.org/mozilla-central/rev/8252eae8278c BuildID 20140916170759 Version 35.0a1 Device Name flame FW-Release 4.4.2 FW-Incremental eng.cltbld.20140916.201924 FW-Date Tue Sep 16 20:19:35 EDT 2014 Bootloader L1TC10011800 This also reproduces in 2.1. The browser process isn't in memory, but homescreen and OperatorVariant is there after FTU is completed. Gaia 47939f4c41d0c941e5047e5d1af74a79b7d8e0d5 Gecko https://hg.mozilla.org/releases/mozilla-aurora/rev/c7477d4b33e7 BuildID 20140917083257 Version 34.0a2 Device Name flame FW-Release 4.4.2 FW-Incremental eng.cltbld.20140917.124840 FW-Date Wed Sep 17 12:48:56 EDT 2014 Bootloader L1TC10011800
[Blocking Requested - why for this release]:
Blocking requested since the unnecessary extra memory footprint (if it is determined to be unnecessary- having two homescreen process definitely seems so) will slow down the performance (at least on the first time use)
After rebooting the phone, b2g-ps shows this: b2g 0 root 206 1 208824 77904 ffffffff b6eca894 S /system/b2g/b2g (Nuwa) 0 root 369 206 54972 11352 ffffffff b6eca894 S /system/b2g/b2g Homescreen 2 u0_a879 879 369 112752 30248 ffffffff b6eca894 S /system/b2g/b2g Smart Collectio 2 u0_a1112 1112 206 75800 31372 ffffffff b6efa894 S /system/b2g/plugin-container (Preallocated a 2 u0_a1135 1135 369 61168 16836 ffffffff b6eca894 S /system/b2g/b2g Note that in the original STR, this command was run after completing the FTU experience.
QA Wanted to branch check against 2.0.
(In reply to Jason Smith [:jsmith] from comment #4) > QA Wanted to branch check against 2.0. In 2.0, the b2g-ps looks like the following: APPLICATION SEC USER PID PPID VSIZE RSS WCHAN PC NAME b2g 0 root 210 1 204964 89024 ffffffff b5acc3c4 R /system/b2g/b2g (Nuwa) 0 root 891 210 55084 20272 ffffffff b6e778ac S /system/b2g/plugin-container OperatorVariant 2 u0_a952 952 891 64424 20848 ffffffff b6e778ac S /system/b2g/plugin-container Built-in Keyboa 2 u0_a1085 1085 210 78380 29040 ffffffff b6f3b8ac S /system/b2g/plugin-container Homescreen 2 u0_a1126 1126 210 128148 43908 ffffffff b6ed38ac S /system/b2g/plugin-container Smart Collectio 2 u0_a1128 1128 210 71492 28448 ffffffff b6f068ac S /system/b2g/plugin-container Homescreen 2 u0_a1129 1129 210 71428 28416 ffffffff b6f4f8ac S /system/b2g/plugin-container (Preallocated a 2 u0_a1136 1136 891 61288 18804 ffffffff b6e778ac S /system/b2g/plugin-container ------- There is NO browser process and only one Homescreen process, BUT OperatorVariant process is present. Tested on: Device: Flame BuildID: 20140917073857 Gaia: 31434a3949556171f3565ca47ac2b44e810e95e6 Gecko: e02fe140c0d5 Version: 32.0 (2.0) Firmware: v165 User Agent: Mozilla/5.0 (Mobile; rv:32.0) Gecko/32.0 Firefox/32.0
QA Whiteboard: [QAnalyst-Triage?]
I see two homescreens in comment 5.
We need them to perform a version upgrade. Kevin, Kyle, can you confirm? This is first-time only after upgrade so I don't see why we should block here.
QA Whiteboard: [QAnalyst-Triage?] → [QAnalyst-Triage+]
I know nothing about homescreen migration. Pretty sure that was crdlc. ni?'ing. That said, now that we have the migration system in place, if all this involves is IDBs, we /could/ look at doing something similar to browser's copy, but it might be a bit late in that particular game for a 2.1 landing.
Flags: needinfo?(kyle) → needinfo?(crdlc)
Is comment 5 implying this is or isn't a regression?
(In reply to Jason Smith [:jsmith] from comment #9) > Is comment 5 implying this is or isn't a regression? The tester did not see the 2nd homescreen process - so this bug DOES fully repro in 2.0 so this does not appear to be a regression
The homescreen boots up because we need to do some data migration from it. I believe both bookmarks and smart collections, though this can go away in 2.2. We should be able to close the homescreen after migration. Wouldn't the oom killer kill the old homescreen if needed? In any case, I think that we should be able to do a window.close() after migration to close the old homescreen. I don't think we should block if this is the same as 2.0.
I am following Kevin's approach
Assignee: nobody → crdlc
Status: NEW → ASSIGNED
Attachment #8491281 - Flags: review?(kgrandon)
Comment on attachment 8491281 [details] Github pull request This should fix the home screen. I'm not sure if we need to also fix OperatorVariant and smart collections though.
Attachment #8491281 - Flags: review?(kgrandon) → review+
I see that you updated collections, this should work. It would be good to verify it real quick. (It's a bit late here and I'm about to sleep)
no idea about OperatorVariant, asking to Albert just in case he knows
Same fix for OperatorVariant (window.close) is more complex because there are several flows and a lot of async processes, we have 16 async customizers, so we should add a lot of 'window.close' and implement some kind of queue in order to be able to track each customizer and close the when all of them finish.
Thanks for the quick fix Cristian! Not blocking on it but please request uplift approval. no-jun, can you test the patch?
blocking-b2g: 2.1? → ---
Comment on attachment 8491281 [details] Github pull request [Approval Request Comment] [Bug caused by] (feature/regressing bug #): [User impact] if declined: The patch forces once those tasks are finished to be closed via window.close(). FTE is executed slower [Testing completed]: added unit tests [Risk to taking this patch] (and alternatives if risky): [String changes made]: no
Attachment #8491281 - Flags: approval-gaia-v2.1?
This was merged to the master so I locally built the tip of the gaia branch to test it out. (make reset-gaia) Extra Homescreen is now gone, and OperatorVariant and Browser is still present. (Assuming the patch was only to kill extra Homescreen) The device functioned normally as well. APPLICATION SEC USER PID PPID VSIZE RSS WCHAN PC NAME b2g 0 root 5244 1 239388 72248 ffffffff b6eaa894 S /system/b2g/b2g (Nuwa) 0 root 5248 5244 71572 8556 ffffffff b6eaa894 S /system/b2g/b2g OperatorVariant 2 u0_a5339 5339 5248 79932 16264 ffffffff b6eaa894 S /system/b2g/b2g Browser 2 u0_a5449 5449 5244 87380 15760 ffffffff b6eb3894 S /system/b2g/plugin-container Homescreen 2 u0_a5594 5594 5244 140624 38524 ffffffff b6e88894 S /system/b2g/plugin-container Smart Collectio 2 u0_a5729 5729 5248 83944 22472 ffffffff b6eaa894 S /system/b2g/b2g (Preallocated a 2 u0_a5871 5871 5248 79836 17724 ffffffff b6eaa894 S /system/b2g/b2g
So about the browser and OperatorVariant process, are they actual bugs? If so, should I open a separate bug to track them?
Attachment #8491281 - Flags: approval-gaia-v2.1? → approval-gaia-v2.1+
(In reply to No-Jun Park [:njpark] from comment #21) > This was merged to the master so I locally built the tip of the gaia branch > to test it out. (make reset-gaia) Extra Homescreen is now gone, and > OperatorVariant and Browser is still present. (Assuming the patch was only > to kill extra Homescreen) The device functioned normally as well. > > APPLICATION SEC USER PID PPID VSIZE RSS WCHAN PC > NAME > b2g 0 root 5244 1 239388 72248 ffffffff b6eaa894 S > /system/b2g/b2g > (Nuwa) 0 root 5248 5244 71572 8556 ffffffff b6eaa894 S > /system/b2g/b2g > OperatorVariant 2 u0_a5339 5339 5248 79932 16264 ffffffff b6eaa894 S > /system/b2g/b2g > Browser 2 u0_a5449 5449 5244 87380 15760 ffffffff b6eb3894 S > /system/b2g/plugin-container > Homescreen 2 u0_a5594 5594 5244 140624 38524 ffffffff b6e88894 S > /system/b2g/plugin-container > Smart Collectio 2 u0_a5729 5729 5248 83944 22472 ffffffff b6eaa894 S > /system/b2g/b2g > (Preallocated a 2 u0_a5871 5871 5248 79836 17724 ffffffff b6eaa894 S > /system/b2g/b2g I checked with Fabrice, and this looks good. Operator Variant is the FTU running, and Browser is just a iframe running someplace (maybe a notification?). the fix removes both homescreen, so marking this bug as verified from your comment on tip. please follow up and make sure this is also fixed on 2.1, and set status-b2g-2.1=verified when done. thanks!
Status: RESOLVED → VERIFIED
(In reply to Tony Chung [:tchung] from comment #24) > the fix removes both homescreen, so marking this bug as verified from your comment on tip. I meant the patch removes one of the migration homescreen processes, not both.
In 2.1, extra homescreen process and browser process cannot be found. Looks good. APPLICATION SEC USER PID PPID VSIZE RSS WCHAN PC NAME b2g 0 root 216 1 214536 67736 ffffffff b6e72894 S /system/b2g/b2g (Nuwa) 0 root 408 216 54992 9228 ffffffff b6e72894 S /system/b2g/b2g OperatorVariant 2 u0_a907 907 408 63300 14572 ffffffff b6e72894 S /system/b2g/b2g Homescreen 2 u0_a1124 1124 216 130072 37136 ffffffff b6edb894 S /system/b2g/plugin-container Smart Collectio 2 u0_a1181 1181 408 66628 22468 ffffffff b6e72894 S /system/b2g/b2g (Preallocated a 2 u0_a1480 1480 408 61188 16936 ffffffff b6e72894 S /system/b2g/b2g
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