How to change the scheduler value through code. 1

[ashish061291]

How can we change the scheduler from "cfq" (by default) to "noop" through code.
Basically I am working with Perl.

I know how we can change it manually
"echo noop > /sys/block/sda/queue/scheduler"
but how to do it via code.

 

[Annihilannic]

Well, system("echo noop > /sys/block/sda/queue/scheduler"); would be fine. Or I guess if you preferred you could open SCHEDULER,">/sys/block/sda/queue/scheduler" or die; print SCHEDULER "noop\n"; close SCHEDULER;.

Annihilannic
[small]tgmlify - code syntax highlighting for your tek-tips posts[/small]

 

[ashish061291]

thnx alot
it was really helpful...

 

[ashish061291]

Hi again,
I have a GUI which accepts the value of the scheduler.
This value is then saved in a variable.

So, how can i use that variable in echo command.

Kindly help...

 

[Annihilannic]

Just put the variable name in there instead of "noop".

Annihilannic
[small]tgmlify - code syntax highlighting for your tek-tips posts[/small]