affinity setting and jar launching in linux.

[bernerd]

Hi all,

I'm trying to launch a jar as a process in linux and at the same time trying to set the affinity of the process.
I'm able to do it in windows in the following codes. However, I'm not sure how do to it in linux.

Runtime r = Runtime.getRuntime();
Process p = null;
String s = "cmd.exe /c start /affinity " + affinity + " java -jar \"myJar.jar\"";
p = control.r.exec(s);

[dinesh.guntha]

no need to use the cmd.exe just use the "cmd /c start /affinity " + affinity + " java -jar \"myJar.jar\"";
p = Runtime.getRuntime().exce(s) or r.exec(s);

I think it will help you.

[Norm]

@dinesh.guntha
What does the OS do differently if you use the cmd.exe command vs the cmd command? What extension does the OS add to a "command" to find the file to be executed?

Is there a command named cmd on linux?

[dinesh.guntha]

nothing difference is ther but i tryed by using cmd.exe it was not working. so that i used with cmd it was working fine.
In the above code he is using the control.r.exec(s).
what is the "control"?
That also may be a case that it is not able to execute.

[DarrylBurke]

nothing difference is ther but i tryed by using cmd.exe it was not working. so that i used with cmd it was working fine.
In the above code he is using the control.r.exec(s).
what is the "control"?
That also may be a case that it is not able to execute.

You're totally missing the point. Read the first three sentences of the original post.

db

[bernerd]

Runtime r = Runtime.getRuntime();
Process p = null;
String s = "cmd.exe /c start /affinity " + affinity + " java -jar \"myJar.jar\"";
p = r.exec(s);

sorry for the confusion. control is the class which I had declared r.

[bernerd]

@dinesh.guntha
What does the OS do differently if you use the cmd.exe command vs the cmd command? What extension does the OS add to a "command" to find the file to be executed?

Is there a command named cmd on linux?

yes, I believe this is where the problem lies at actually. can't seem to find the right way to call the cmd in linux.

[kjkrum]

taskset(1): retrieve/set process's CPU affinity - Linux man page