How to shorten Android4.4.2 start-up time for SABRE-SDB

[yuuki]

Dear all,

Our customer runs Android4.4.2 on SABRE-SDB.

- Board:          SABRE-SDB (i.MX6Quad)
- OS:             Android4.4.2 (FSL BSP)
- Bootdevice:     SD card
- Display output: HDMI output

It will take very long time until Androir starts.

Please see "start-up time_bootlog.txt".

In this Log, it takes time very much on the following point.

<1>
425th  [    4.567159] Freeing init memory: 252K
426th  [   10.755696] init: starting 'servicemanager'

<2>
598th  [   13.367436] SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
599th  [   19.061339] warning: `zygote' uses 32-bit capabilities (legacy support in use)

Is there how to shorten such processing time?

Best Regards,
Yuuki

Original Attachment has been moved to: start-up-time_bootlog.txt.zip

[SergioSolis]

Well, you might be able to cut the most time on Zygote.

As you might already know, what Zygote does is to preload classes which are shared between applications thus reducing the memory usage and application launch time.

You can disable the pre-loading of classes, this will reduce booting time. Take in consideration that this will have an effect on the application load time and memory usage after boot time. You can easily cut 5 seconds here.

For more information about improving the android boot time, please take a look at this link:

Improving Android Boot Time Outline - eLinux.org

Best regards,
Sergio

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[yuuki]

Dear Sergio-san,

Would you teach how to disable Zygote?

Best Regards,

Yuuki