Android memory performance on SabreLite

varsmolta — Sun, 17 Mar 2013 23:06:13 GMT

after running android on the sabrelite, I came across a couple of issues. The android image is a prebuilt 4.0.4 taken from the boundary devices site: http://boundarydevices.com/android-r13-4-stage-3/

When I open browser, sometime I get a message "Browser is not responding. Would you like to close it". I just click WAIT and eventually I am able to use the browser. I get the "Browser is not responding message" intermittently during browsing (i.e. it seems like there is some bottleneck). See below for excerpt of "busybox top" command sorted by %MEM column. This was done while playing a youtube video. VPU acceleration seems to be working :-) It seems like CPU usage is not the bottleneck. Max cpu util is 8.6% for CPU4. Could it be that physical RAM is the bottleneck (although it shows 286084K memory as being free). It seems more likely that memory allocated to the browser application is the bottleneck as it shows 90.9% usage of memory allocated to the browser process.

Mem: 547620K used, 286084K free, 0K shrd, 1632K buff, 59980K cached

CPU0: 396MHz 8.3% usr 8.1% sys 0.0% nic 81.9% idle 0.0% io 0.0% irq 1.5%

CPU1: 396MHz 4.5% usr 4.1% sys 0.0% nic 91.2% idle 0.0% io 0.0% irq 0.0%

CPU2: 396MHz 1.9% usr 1.5% sys 0.1% nic 0.0% idle 96.2% io 0.0% irq 0.0%

CPU3: 396MHz 8.6% usr 2.8% sys 0.0% nic 88.6% idle 0.0% io 0.0% irq 0.0%

Load average: 9.15 6.21 6.11 2/499 3673

PID PPID USER STAT VSZ %MEM CPU %CPU COMMAND

3450 2310 10028 R 741m 90.9 0 6.6 com.android.browser

2388 2310 1000 S 739m 90.7 2 0.0 system_server

2467 2310 1000 S 669m 82.1 3 0.0 com.android.systemui

2862 2310 1000 S 667m 81.9 0 0.0 com.android.settings

2580 2310 10018 S 663m 81.3 0 0.0 com.android.launcher

3014 2310 10035 S 656m 80.4 0 0.0 com.android.gallery3d

3049 2310 10005 S 654m 80.3 0 0.0 com.android.quicksearchbox

2849 2310 10020 S 639m 78.4 3 0.0 com.android.music

2767 2310 1000 S 635m 77.9 1 0.0 fsl.power.service

2604 2310 10004 S 460m 56.5 1 0.0 android.process.acore

2569 2310 1001 S 454m 55.7 2 0.0 com.android.phone

2803 2310 10034 S 449m 55.0 1 0.0 com.android.exchange

2787 2310 10030 S 448m 55.0 2 0.0 com.android.email

2646 2310 10029 S 446m 54.7 0 0.0 com.android.calendar

2741 2310 10004 S 446m 54.7 3 0.0 com.android.contacts

2515 2310 10011 S 444m 54.5 3 0.0 android.process.media

2699 2310 10024 S 443m 54.4 0 0.0 com.android.providers.calendar

What sort of buildtime or run time optimizations can we make to improve the performance? Would running on eMMC (custom solution) help than running on sd card? Would upgrading to Android Jelly bean help? I have ordered a HI-802/GK802 hdmi dongle to compare the performance (http://armdevices.net/2012/10/16/hi802-i-mx6-quad-hdmi-stick-89-incl-worldwide-shipping-on-armdevices-net-members-store/). I don't have it in hand yet. But from everything I hear, it runs super smooth and is one of the fastest hdmi dongles out there.

Re: Android memory performance on SabreLite

Yuri — Mon, 18 Mar 2013 03:43:10 GMT

Please the solution in

i.MX6Q SabreSD Catastrophic Ethernet Latencies

topic Re: Android memory performance on SabreLite in i.MX Processors

Android memory performance on SabreLite

Re: Android memory performance on SabreLite