Hello,
I discovered that the Android Wear app
(
https://play.google.com/store/apps/details?id=com.google.android.wearable.app
Version = 1.0.0.1261840)
running on my Android development device LG / Android OS 4.4.4
was hogging resources on my LG development device and causing an
incessant stream of GC messages.
top:
*User 51%, System 13%, IOW 0%, IRQ 0%*
*User 307 + Nice 0 + Sys 83 + Idle 209 + IOW 0 + IRQ 0 + SIRQ 0 = 599*
* PID PR CPU% S #THR VSS RSS PCY UID Name*
* 1065 0 43% S 21 903800K 34212K fg u0_a7
com.google.android.gms.wearable*
* 1013 0 15% S 39 903932K 38792K fg u0_a111
com.google.android.wearable.app*
* 578 0 5% S 76 975848K 70004K fg system system_server*
*13377 0 1% R 1 1312K 488K shell top*
127|shell@mako:/ $ cat /proc/version
Linux version 3.4.0-perf-ga6edd5e ([email protected])
(gcc version 4.7 (GCC) ) #1 SMP PREEMPT Wed Apr 16 09:33:17 PDT 2014
127|shell@mako:/ $ cat /proc/cpuinfo
Processor : ARMv7 Processor rev 2 (v7l)
processor : 0
BogoMIPS : 13.53
processor : 1
BogoMIPS : 13.53
processor : 2
BogoMIPS : 13.53
processor : 3
BogoMIPS : 13.53
Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4
CPU implementer : 0x51
CPU architecture: 7
CPU variant : 0x0
CPU part : 0x06f
CPU revision : 2
Hardware : QCT APQ8064 MAKO
Revision : 000b
Serial : 0000000000000000
adb logcat showed this constant, perpetual flood of GC_* messages, with
pause times
*D/dalvikvm( 1065): GC_CONCURRENT freed 427K, 6% free 9304K/9896K, paused
1ms+2ms, total 17ms*
*D/dalvikvm( 1065): GC_CONCURRENT freed 428K, 6% free 9306K/9896K, paused
2ms+2ms, total 27ms*
*D/dalvikvm( 1065): GC_CONCURRENT freed 443K, 6% free 9308K/9896K, paused
1ms+3ms, total 22ms*
*D/dalvikvm( 1013): GC_EXPLICIT freed 108K, 17% free 12960K/15532K, paused
2ms+5ms, total 44ms*
*D/dalvikvm( 1065): GC_CONCURRENT freed 416K, 6% free 9304K/9896K, paused
1ms+4ms, total 17ms*
*D/dalvikvm( 578): GC_FOR_ALLOC freed 1036K, 16% free 22510K/26540K,
paused 97ms, total 97ms*
*I/dalvikvm-heap( 578): Grow heap (frag case) to 22.378MB for 380496-byte
allocation*
*D/dalvikvm( 578): GC_FOR_ALLOC freed 9K, 16% free 22872K/26912K, paused
94ms, total 94ms*
*D/dalvikvm( 578): GC_FOR_ALLOC freed 447K, 17% free 22425K/26912K, paused
90ms, total 90ms*
*D/dalvikvm( 1065): GC_CONCURRENT freed 405K, 6% free 9307K/9896K, paused
2ms+3ms, total 19ms*
*D/dalvikvm( 1065): GC_CONCURRENT freed 422K, 6% free 9306K/9896K, paused
1ms+1ms, total 14ms*
*D/dalvikvm( 1065): GC_CONCURRENT freed 409K, 6% free 9310K/9896K, paused
2ms+2ms, total 24ms*
*D/dalvikvm( 1013): GC_EXPLICIT freed 95K, 17% free 12969K/15532K, paused
3ms+15ms, total 67ms*
*D/dalvikvm( 1065): GC_CONCURRENT freed 390K, 6% free 9305K/9896K, paused
1ms+1ms, total 15ms*
*D/dalvikvm( 1065): GC_CONCURRENT freed 385K, 6% free 9305K/9896K, paused
1ms+1ms, total 15ms*
*D/dalvikvm( 1065): GC_CONCURRENT freed 442K, 6% free 9307K/9896K, paused
1ms+3ms, total 24ms*
After uninstalling the Android Wear App, top showed significant reduction
of resource consumption ( down to 2% User and System 3% ( from the
earlier User 51%, System 13%, IOW 0%, IRQ 0% ) and the incessant stream of
GC messages stopped.
top output, after uninstalling Android Wear app from Google :
*User 2%, System 3%, IOW 0%, IRQ 0%*
*User 7 + Nice 0 + Sys 12 + Idle 288 + IOW 0 + IRQ 0 + SIRQ 0 = 307*
* PID PR CPU% S #THR VSS RSS PCY UID Name*
*14675 0 2% R 1 1304K 488K shell top*
* 578 0 1% S 76 984412K 75472K fg system system_server*
* 200 0 0% S 9 10548K 772K nobody
/system/bin/sensors.qcom*
* 985 0 0% S 37 921636K 44632K fg u0_a7
com.google.process.location *
Anyone here who has had similar observations, or some explanation ?
Thank you
Sanjay Mishra
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