Check Random Entropy Available

Check Random Entropy Available


This app displays the Random Entropy Available as presented in the kernel.

This should be used alongside Seeder or in conjunction with your own performance testing.

There is currently some discussion the loading apps requires there to be random numbers available.

I got the idea after reading over this forum post:

http://forum.xda-developers.com/showthread.php?p=36359613

I read up about random entropy seeding and I'm using the following values:

Performance changes:

Do not randomize address spaces: Performance Gain at loss of security?
busybox sysctl -w kernel.randomize_va_space=0

Minimum number to write random numbers: (Goal is 4096, so this is 25%.) Observed value 133 at beginning.
sysctl -w kernel.random.write_wakeup_threshold=1024
sysctl -w kernel.random.write_wakeup_threshold=4096

Minimum number to read random numbers: // gives it more time to read?

sysctl -w kernel.random.read_wakeup_threshold=512

Also interesting: I took a bunch of screenshots for this app release, and the number dipped down quite a bit..
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Free
89
4.5
User ratings
425
Installs
10,000+
Concerns
0
File size
185 kb
Screenshots
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About Check Random Entropy Available
This app displays the Random Entropy Available as presented in the kernel.

This should be used alongside Seeder or in conjunction with your own performance testing.

There is currently some discussion the loading apps requires there to be random numbers available.

I got the idea after reading over this forum post:

http://forum.xda-developers.com/showthread.php?p=36359613

I read up about random entropy seeding and I'm using the following values:

Performance changes:

Do not randomize address spaces: Performance Gain at loss of security?
busybox sysctl -w kernel.randomize_va_space=0

Minimum number to write random numbers: (Goal is 4096, so this is 25%.) Observed value 133 at beginning.
sysctl -w kernel.random.write_wakeup_threshold=1024
sysctl -w kernel.random.write_wakeup_threshold=4096

Minimum number to read random numbers: // gives it more time to read?

sysctl -w kernel.random.read_wakeup_threshold=512

Also interesting: I took a bunch of screenshots for this app release, and the number dipped down quite a bit..

User reviews of Check Random Entropy Available
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Android Market Comments
A Google User
Mar 30, 2015
Simple.... The app is simple... And it does ours job well
A Google User
Mar 13, 2015
Just what is needed. My entropy is 4096, everytime. Idk if this is because of the app or maybe because of v6 scripts.
A Google User
Dec 28, 2014
Simple Much valued application, thank you☺
A Google User
Sep 28, 2014
Nice app I have 4092 lol
A Google User
Jun 15, 2014
Good app for root users It helps me know if the entropy tweaks worked..
Version 1000000
Version 1000000