Those are processes, not threads. On Fri, Sep 2, 2011 at 9:21 AM, Jack Harvard <jack.harv...@gmail.com> wrote: > Thanks a lot, unfortunately we use BusyBox as the filesystem, the 'top' > command options are slightly different, 'top -b' got me something as > follows, but would like to get something as you did (suppose you use ps > command, i couldn't get exactly the same output as yours, would be nice to > have the function names printed out). > > Mem: 189324K used, 65772K free, 0K shrd, 864K buff, 78104K cached > CPU: 50.0% usr 0.0% sys 0.0% nic 50.0% idle 0.0% io 0.0% irq 0.0% sirq > Load average: 0.18 0.17 0.09 4/298 1085 > PID PPID USER STAT VSZ %MEM CPU %CPU COMMAND > 728 727 1000 S 136m 54.7 2 0.0 system_server > 1027 727 10030 R 128m 51.2 3 0.0 com.android.browser > 786 727 1001 S 86028 33.6 0 0.0 com.android.phone > 868 727 10005 S 83568 32.6 0 0.0 android.process.acore > 960 727 10029 S 83516 32.6 1 0.0 com.android.mms > 779 727 10012 S 78344 30.6 0 0.0 com.android.inputmethod.latin > 787 727 1000 S 76668 29.9 1 0.0 com.android.systemui > 788 727 10020 S 76120 29.7 1 0.0 com.android.launcher > 932 727 10016 S 73868 28.8 0 0.0 com.android.email > 1002 727 10027 S 73584 28.7 2 0.0 com.cooliris.media > 905 727 10003 S 73176 28.5 3 0.0 android.process.media > 916 727 10006 S 72168 28.1 1 0.0 com.android.deskclock > 945 727 10025 S 72040 28.1 3 0.0 com.android.providers.calendar > 985 727 10013 S 71856 28.0 0 0.0 com.android.quicksearchbox > 899 727 10002 S 71448 27.9 1 0.0 com.android.bluetooth > 977 727 10008 S 71384 27.8 0 0.0 com.android.music > 993 727 10014 S 70820 27.6 0 0.0 com.android.protips > > On 2 Sep 2011, at 00:11, Dianne Hackborn wrote: > >> Many of those probably aren't even browser threads, but threads for Dalvik >> and the application framework. For example, here is a list of threads in my >> browser: >> >> 1 7035 native 79 21 main >> *2 7038 vmwait 10 0 GC >> *3 7040 vmwait 0 0 Signal Catcher >> *4 7041 running 0 5 JDWP >> *5 7042 vmwait 13 7 Compiler >> *6 7043 wait 0 0 ReferenceQueueDaemon >> *7 7044 wait 0 0 FinalizerDaemon >> *8 7045 timed-wait 0 0 FinalizerWatchdogDaemon >> 9 7046 native 0 0 Binder Thread #1 >> 10 7047 native 0 0 Binder Thread #2 >> 11 7057 wait 0 0 pool-2-thread-1 >> 12 7050 native 0 0 CookieSyncManager >> 13 7056 timed-wait 2 0 pool-1-thread-2 >> 14 7058 native 322 30 WebViewCoreThread >> 15 7053 native 2 1 BackgroundHandler >> 16 7054 timed-wait 0 0 pool-1-thread-1 >> 17 7059 wait 1 0 AsyncTask #1 >> 18 7062 native 8 1 TexturesGenerator >> *19 7063 wait 10 1 Thread-183 >> 20 7067 native 0 0 Thread-185 >> 21 7066 native 6 0 Thread-186 >> 22 7070 wait 10 1 AsyncTask #2 >> 23 7074 native 18 51 Thread-188 >> 24 7076 native 0 0 Thread-189 >> 25 7077 wait 0 0 AsyncTask #3 >> 26 7078 wait 10 1 AsyncTask #4 >> 27 7079 wait 11 0 AsyncTask #5 >> >> WebViewCoreThread is I believe the main browser thread. You can easily see >> what threads are actually using CPU with "adb shell top -m 10 -t" while you >> are using the browser. >> >> On Thu, Sep 1, 2011 at 12:15 PM, Jack Harvard <jack.harv...@gmail.com> wrote: >> Thanks for your reply. I'm on the research side, rather than development. I >> observed 17-22 threads from com.android.browser, suppose only one of those >> thread is doing the real work of rendering the page. >> >> On 31 Aug 2011, at 22:58, Dianne Hackborn wrote: >> >> > I really don't know what you are trying to get at. As I said, as far as I >> > know browser CPU use is generally pretty single-threaded -- the DOM >> > rendering and JavaScript interpreter all need to run in the same thread. >> > Just creating more threads doesn't magically allow this work to be spread >> > across them. >> > >> > And again, Gingerbread was not written for multi-core CPUs. In fact if >> > you try to run stock GB on a multi-core CPU you will be extremely unstable >> > because there are many things not working correctly for SMP, especially >> > ARM SMP. So it doesn't make sense to ask questions about how stock GB >> > runs on multi-core, because it just doesn't. >> > >> > If you are wondering about a particular phone someone has released with >> > GB, you will need to talk with that manufacturer, because they will have >> > needed to do some work to have GB run on a multi-core CPU. >> > >> > On Wed, Aug 31, 2011 at 2:09 PM, Jack Harvard <jack.harv...@gmail.com> >> > wrote: >> > Thanks for your reply, Dianne. If I run the Android browser as my only >> > application in Gingerbread on a quad-core smartphone, and the page to be >> > loaded is stored locally in memory (no network delay etc, in this case, >> > the browser is single-threaded only as no network connection?), I wouldn't >> > see any performance scaling (or worse, as the OS may move the threads to >> > another core less busy in a circle) from a single-core smartphone, >> > everything else being the same? >> > >> > On 31 Aug 2011, at 21:00, Dianne Hackborn wrote: >> > >> > > Gingerbread isn't designed for multi-core CPUs. The browser doesn't try >> > > to create threads to use multiple CPUs, it creates threads to have >> > > multiple network connections. >> > > >> > > Besides networking, browsers are pretty intrinsically single-threaded >> > > anyway. The complicated stuff all needs to run in one thread: DOM >> > > rendering, JavaScript, etc. >> > > >> > > On Wed, Aug 31, 2011 at 12:08 PM, Jack Harvard <jack.harv...@gmail.com> >> > > wrote: >> > > I want to understand how many threads Gingerbread generates in order to >> > > understand how the browser performance scale with multicores? For >> > > example, if "a few " means 2, that means 4 cores wouldn't scale the >> > > browser performance by anywhere close to 4 times. I understand that >> > > Gingerbread doesn't officially support SMP, sometimes browser does crash >> > > on multicore platforms, it's not a problem for me though. >> > > >> > > On 31 Aug 2011, at 18:57, Dianne Hackborn wrote: >> > > >> > > > Oh and Gingerbread wasn't designed to run on anything but single CPU >> > > > systems, so that's irrelevant to the question of the base platform. >> > > > Of course people shipping Android modify it in various ways, and the >> > > > browser is often one of the things they modify. >> > > > >> > > > On Wed, Aug 31, 2011 at 10:57 AM, Dianne Hackborn >> > > > <hack...@android.com> wrote: >> > > > A few. Why? :) >> > > > >> > > > >> > > > On Wed, Aug 31, 2011 at 10:40 AM, Jack Harvard >> > > > <jack.harv...@gmail.com> wrote: >> > > > Wondering how many threads does android browser generate? Suppose it's >> > > > Gingerbread running on a dual-core or quad-core ARM processor. >> > > > >> > > > -- >> > > > You received this message because you are subscribed to the Google >> > > > Groups "Android Developers" group. >> > > > To post to this group, send email to >> > > > android-developers@googlegroups.com >> > > > To unsubscribe from this group, send email to >> > > > android-developers+unsubscr...@googlegroups.com >> > > > For more options, visit this group at >> > > > http://groups.google.com/group/android-developers?hl=en >> > > > >> > > > >> > > > >> > > > -- >> > > > Dianne Hackborn >> > > > Android framework engineer >> > > > hack...@android.com >> > > > >> > > > Note: please don't send private questions to me, as I don't have time >> > > > to provide private support, and so won't reply to such e-mails. All >> > > > such questions should be posted on public forums, where I and others >> > > > can see and answer them. >> > > > >> > > > >> > > > >> > > > >> > > > -- >> > > > Dianne Hackborn >> > > > Android framework engineer >> > > > hack...@android.com >> > > > >> > > > Note: please don't send private questions to me, as I don't have time >> > > > to provide private support, and so won't reply to such e-mails. All >> > > > such questions should be posted on public forums, where I and others >> > > > can see and answer them. >> > > > >> > > > >> > > > -- >> > > > You received this message because you are subscribed to the Google >> > > > Groups "Android Developers" group. >> > > > To post to this group, send email to >> > > > android-developers@googlegroups.com >> > > > To unsubscribe from this group, send email to >> > > > android-developers+unsubscr...@googlegroups.com >> > > > For more options, visit this group at >> > > > http://groups.google.com/group/android-developers?hl=en >> > > >> > > -- >> > > You received this message because you are subscribed to the Google >> > > Groups "Android Developers" group. >> > > To post to this group, send email to android-developers@googlegroups.com >> > > To unsubscribe from this group, send email to >> > > android-developers+unsubscr...@googlegroups.com >> > > For more options, visit this group at >> > > http://groups.google.com/group/android-developers?hl=en >> > > >> > > >> > > >> > > -- >> > > Dianne Hackborn >> > > Android framework engineer >> > > hack...@android.com >> > > >> > > Note: please don't send private questions to me, as I don't have time to >> > > provide private support, and so won't reply to such e-mails. All such >> > > questions should be posted on public forums, where I and others can see >> > > and answer them. >> > > >> > > >> > > -- >> > > You received this message because you are subscribed to the Google >> > > Groups "Android Developers" group. >> > > To post to this group, send email to android-developers@googlegroups.com >> > > To unsubscribe from this group, send email to >> > > android-developers+unsubscr...@googlegroups.com >> > > For more options, visit this group at >> > > http://groups.google.com/group/android-developers?hl=en >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups "Android Developers" group. >> > To post to this group, send email to android-developers@googlegroups.com >> > To unsubscribe from this group, send email to >> > android-developers+unsubscr...@googlegroups.com >> > For more options, visit this group at >> > http://groups.google.com/group/android-developers?hl=en >> > >> > >> > >> > -- >> > Dianne Hackborn >> > Android framework engineer >> > hack...@android.com >> > >> > Note: please don't send private questions to me, as I don't have time to >> > provide private support, and so won't reply to such e-mails. All such >> > questions should be posted on public forums, where I and others can see >> > and answer them. >> > >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups "Android Developers" group. >> > To post to this group, send email to android-developers@googlegroups.com >> > To unsubscribe from this group, send email to >> > android-developers+unsubscr...@googlegroups.com >> > For more options, visit this group at >> > http://groups.google.com/group/android-developers?hl=en >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to android-developers@googlegroups.com >> To unsubscribe from this group, send email to >> android-developers+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en >> >> >> >> -- >> Dianne Hackborn >> Android framework engineer >> hack...@android.com >> >> Note: please don't send private questions to me, as I don't have time to >> provide private support, and so won't reply to such e-mails. All such >> questions should be posted on public forums, where I and others can see and >> answer them. >> >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to android-developers@googlegroups.com >> To unsubscribe from this group, send email to >> android-developers+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en >
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