Shorten Device Boot Time for Automotive IVI - The Linux Foundation

More documents

Recommendations

Info

PerfRecording:$ perf record -a -f^C[ perf record: Woken up 1 times to write data ][ perf record: Captured and wrote 0.288 MB perf.data (~12567samples)]Output$ perf report --sort comm,dso,symbol|head -10# Events: 1K cycles## Overhead Command Shared Object Symbol# ........ ........... ...................... ............#35.47% firefox libxul.so [.] 0xc1b3a73.08% firefox libcairo.so.2.11000.2 [.] 0xff882.98% Xorg Xorg (deleted) [.] 0xe201c2.51% firefox firefox [.] 0x27261.49% Xorg [kernel.kallsyms] [k] find_vma0.93% perf_3.0.0 perf_3.0.0 [.] hex2u64
Perf<strong>Time</strong>chart$ perf timechart record$ perf timechart
Page 5 and 6: Disclaimer of Warranties• Technic
Page 9 and 10: http://elinux.org/Boot_Time
Page 11 and 12: $ bootchart bootchart.tgz -f pngBoo
Page 13: OProfileOutput Example$ opreport --
Page 17 and 18: BootchartOriginal “bootchartd”
Page 19 and 20: BootchartTo run:$ adb shell 'echo 1
Page 21 and 22: LogcatAndroid log utilityCan output
Page 23 and 24: StopwatchNot real stopwatchA utilit
Page 25 and 26: Boot-loader InitUsually constant ti
Page 27 and 28: Zygote Class PreloadingAndroid Fram
Page 29 and 30: PackageManager Package ScannigEvery
Page 31 and 32: Boot Time Reduction
Page 33 and 34: Qi Boot-loaderBoot-loader Improveme
Page 35 and 36: Optimize Android InitParallize init
Page 37 and 38: Filesystem OptimizationAccording to
Page 39 and 40: Lessons learnt• Complex userspace
Page 41 and 42: ARM Hibernation Solutions• swsup
Page 43 and 44: ARM Hibernation Diagram (2)Swap spa
Page 45 and 46: ARM Hibernation Diagram (4)4GBHard
Page 47 and 48: FastONDeveloped by OSLab of Nationa
Page 49 and 50: FastON Diagram (1)Write-out(rand.)f
Page 51 and 52: FastONThemachine isreadyThe time we
Page 53 and 54: Boot Time: Original vs. FastONThe h
Page 55 and 56: Android Wakelocks & TuxOnIce
Page 57 and 58: Suspend to DiskResume
Page 59 and 60: Example: Android on BeagleboardOMAP
Page 61 and 62: Hibernation Boot
Page 63 and 64: R-LoaderNormal suspend-to-disk appr
Page 65 and 66:
Advanced Topics for integratingHibe
Page 67 and 68:
Hibernation looks fine, why another
Page 69 and 70:
Ideas about Checkpointing forAndroi
Page 71 and 72:
Communication state restart• Crea
Page 73 and 74:
Implementation Considerations• Ch
Page 75 and 76:
Process StructureCT = DMTCP checkpo
Page 77 and 78:
How DMTCP works (2/4)• LD_PRELOAD
Page 79 and 80:
How DMTCP works (4/4)• Checkpoint
Page 81 and 82:
Checkpoint under DMTCP(2/7)• Ask
Page 83 and 84:
Checkpoint under DMTCP(4/7)• Pre-
Page 85 and 86:
Checkpoint under DMTCP(6/7)• Post
Page 87 and 88:
Restart under DMTCP(1/6)• Restart
Page 89 and 90:
Restart under DMTCP(3/6)• Reopen
Page 91 and 92:
Restart under DMTCP(5/6)• Restore
Page 93 and 94:
DMTCP WorkflowRestartStart with dmt
Page 95 and 96:
DMTCP/Android: Additional Features(
Page 97 and 98:
More extensions in DMTCP/Android•
Page 99 and 100:
Technical Issues when modifyingDMTC
Page 101 and 102:
Observations from logcat--------- b
Page 103 and 104:
Mixed Model: Hibernation + Checkpoi
Page 105 and 106:
Timing diagram of Hibernation stage
Page 107 and 108:
Conclusion• No silver bullet for
Page 109:
http://0xlab.org
show all

Shorten Device Boot Time for Automotive IVI - The Linux Foundation

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?