| NAME='Stress' |
| AUTHOR='Yi Yang <yang.y.yi@gmail.com>' |
| EXPERIMENTAL='True' |
| TEST_TYPE='client' |
| TIME='MEDIUM' |
| TEST_CATEGORY='Functional' |
| TEST_CLASS='Software' |
| DOC='''\ |
| stress is not a benchmark, but is rather a tool designed to put given subsytems |
| under a specified load. Instances in which this is useful include those in |
| which a system administrator wishes to perform tuning activities, a kernel or |
| libc programmer wishes to evaluate denial of service possibilities, etc. |
| |
| Stress command line options: |
| |
| -?, --help show this help statement |
| --version show version statement |
| -v, --verbose be verbose |
| -q, --quiet be quiet |
| -n, --dry-run show what would have been done |
| -t, --timeout N timeout after N seconds |
| --backoff N wait factor of N microseconds before work starts |
| -c, --cpu N spawn N workers spinning on sqrt() |
| -i, --io N spawn N workers spinning on sync() |
| -m, --vm N spawn N workers spinning on malloc()/free() |
| --vm-bytes B malloc B bytes per vm worker (default is 256MB) |
| --vm-stride B touch a byte every B bytes (default is 4096) |
| --vm-hang N sleep N secs before free (default is none, 0 is inf) |
| --vm-keep redirty memory instead of freeing and reallocating |
| -d, --hdd N spawn N workers spinning on write()/unlink() |
| --hdd-bytes B write B bytes per hdd worker (default is 1GB) |
| --hdd-noclean do not unlink files created by hdd workers |
| Example: %s --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 10s |
| Note: Numbers may be suffixed with s,m,h,d,y (time) or B,K,M,G (size). |
| |
| Autotest module options: |
| args = Arguments passed to the stress test. If omitted, an heuristic |
| will be used to calculate sensible defaults |
| stress_length = Time length on which stress will run, in seconds. |
| By default is 60s. |
| ''' |
| job.run_test('stress') |
