Hi,it's a new new discovery for the Kindle.
For instance, the indexer can waste almost 100% of the CPU time when it is running.
For to release the CPU,
we can reduce using the CPU by make a change.
There are many ' *.jar ' in the directory of /usr/java/bin/cvm
just like:
*de_DE.jar
*es_ES.jar
*fr_FR.jar
*it_IT.jar
*ja_JP.jar
*pt_BR.jar
they always working when our Kindle is running,but we don't use it if we are reading the 'local language‘ document.
Then I found something useful in the file /etc/upstart/framework
there is a line said
'
JAR_LIST=$(find $EHOME/lib $EHOME/booklet /usr/local/ebook/lib /opt/amazon/pkg/oss/lib -name \*.jar 2>/dev/null) '
So we can backup the files and remove it from our device for to prevent them from running.
Here is the main steps:
------------------------------------------------------------------
1.Install the
Jailbreak and
usbnetwork
2.Use the
Winscp to make a ssh to the Kindle
3.Run the script:
#!/bin/sh
/etc/upstart/framework stop
cd /opt/amazon/ebook/lib
mkdir -p /mnt/us/.backup/opt/amazon/ebook/lib
mv *de_DE.jar /mnt/us/.backup/opt/amazon/ebook/lib/
mv *es_ES.jar /mnt/us/.backup/opt/amazon/ebook/lib/
mv *fr_FR.jar /mnt/us/.backup/opt/amazon/ebook/lib/
mv *it_IT.jar /mnt/us/.backup/opt/amazon/ebook/lib/
mv *ja_JP.jar /mnt/us/.backup/opt/amazon/ebook/lib/
mv *pt_BR.jar /mnt/us/.backup/opt/amazon/ebook/lib/
/etc/upstart/framework start
sync
sync
sync
reboot
4.Restart the Kindle.
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Tips:Chose the right files ’*.jar'!!!!!!!!!
Example:If your local language is Japannes,
you will have to keep the file '*ja_JP.jar' from being deleted!!!!!
Here are the situation of CPU after finished all the step above.
Before operation
After operation
It's test Successfuly for Paperwhite