Stress Test: mpflip

TEST NAME

mpflip - flip processors on and off

SYNOPSIS

sh mpflip.sh pause

DESCRIPTION

The mpflip test repeatedly flips additional processors in a system on and off.

The RUNTIME environment variable specifies, in seconds, the duration of the test.

OPERANDS

pause

Length of time (in seconds) between which processors in the system are flipped on and off. If you do not specify pause, the length of time between which processors are flipped is 1 second, by default.

OUTPUT

This test lists the processors as they are toggled.

DURATION

As long as the other concurrent tests run.

POSSIBLE CONCURRENT TESTS

This test should be run along with another stress or functional test to further the stress placed on the driver.

This test runs with other tests without conflict.

NOTES

To run this test, you must be logged in as the root user.

All processors are returned to ON state when interrupted.

EXAMPLES

# RUNTIME=30 export RUNTIME
# ./mpflip.sh 2
2

Using inter-flip pause of 2 seconds.
Running time: 30 seconds

Starting to loop thru processors...

Found 4 processor(s) on-line.
Found 4 processor(s) in the system.

Taking processor #1 off-line:Done
Taking processor #2 off-line:Done
Taking processor #3 off-line:Done
Putting processor #3 on-line:Done
Putting processor #2 on-line:Done
Putting processor #1 on-line:Done
Taking processor #1 off-line:Done
Taking processor #2 off-line:Done
Taking processor #3 off-line:Done
Putting processor #3 on-line:Done
Putting processor #2 on-line:Done
Putting processor #1 on-line:Done
Taking processor #1 off-line:Done
Taking processor #2 off-line:Done
Taking processor #3 off-line:Done
PASS: no problems in mpflip

Resetting processors...

REFERENCES

mpstat(1M), psradm(1M), psrinfo(1M)