The migShm StressTest

The MAASK group created their own Stress Test suite, in order to prove that their tools actually work. And guess what .. if you don't read their readme you will miss out on the fact that you need to run their test as root. Not running their tests as root will cause the applications to segfault. However , after actually reading their README the test runs fine.

Let's have a look at what the tests actually do ! One of the parts of the test is the parallel_prime program. Running this program on a normal openMosix kernel shows that the program is locked to it's own node.

[root@dhcp89 1233]# ps -ef | grep para
sdog      1233     1  4 16:22 pts/0    00:00:02 ./parallel_prime 1 100000
...
[root@dhcp89 1233]# cat cantmove
clone_vm

The parallel-prime program demonstrates parallelism achieved by threads. It will calculate all the prime numbers in the specified range.

The shm_test.c program is there to test the functioning of the transparent consistency modules. It has similar behavior

[root@dhcp89 root]# ps -ef | grep shm
root      1285  1177  0 16:31 pts/1    00:00:00 /bin/bash ./start_shm_test.sh
root      1292  1285 95 16:31 pts/1    00:00:15 ./shm_test
[root@dhcp89 root]# cd /proc/1292/
[root@dhcp89 1292]# cat cantmove
monkey

When running these programs as root on an openMosix-migShm kernel, they happily migrate to the available nodes.