Getting started

The Affinity Library lets you assign and release CPUs to threads.

First you need to build the library for your platform on Linux.

1. Check it out the source
2. make the Makefile executable (on unix) chmod +x src/main/c/Makefile (You need gcc and make installed)
3. Compile it with mvn compile
4. Add the library libaffinity.so to your LD_LIBRARY_PATH or link it to you work directory.
5. Build it with mvn test

Try running vanilla.java.affinity.AffinitySupportMain and it should print something like

Estimated clock frequency was 3400 MHz
Assigning cpu 7 to Thread[main,5,main]
Assigning cpu 6 to Thread[reader,5,main]
Releasing cpu 7 from Thread[main,5,main]

The assignment of CPUs is
0: General use CPU
1: General use CPU
2: Reserved for this application
3: Thread[writer,5,main] alive=true
4: General use CPU
5: General use CPU
6: Thread[reader,5,main] alive=true
7: Thread[engine,5,main] alive=true

Assigning cpu 7 to Thread[engine,5,main]
Releasing cpu 6 from Thread[reader,5,main]
Releasing cpu 3 from Thread[writer,5,main]
Releasing cpu 7 from Thread[engine,5,main]