| .\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.36. |
| .TH STRESS "1" "March 2010" "stress 1.0.4" "User Commands" |
| .SH NAME |
| stress \- tool to impose load on and stress test systems |
| .SH SYNOPSIS |
| .B stress |
| [\fIOPTION \fR[\fIARG\fR]] ... |
| .SH DESCRIPTION |
| `stress' imposes certain types of compute stress on your system |
| .TP |
| \-?, \fB\-\-help\fR |
| show this help statement |
| .TP |
| \fB\-\-version\fR |
| show version statement |
| .TP |
| \fB\-v\fR, \fB\-\-verbose\fR |
| be verbose |
| .TP |
| \fB\-q\fR, \fB\-\-quiet\fR |
| be quiet |
| .TP |
| \fB\-n\fR, \fB\-\-dry\-run\fR |
| show what would have been done |
| .TP |
| \fB\-t\fR, \fB\-\-timeout\fR N |
| timeout after N seconds |
| .TP |
| \fB\-\-backoff\fR N |
| wait factor of N microseconds before work starts |
| .TP |
| \fB\-c\fR, \fB\-\-cpu\fR N |
| spawn N workers spinning on sqrt() |
| .TP |
| \fB\-i\fR, \fB\-\-io\fR N |
| spawn N workers spinning on sync() |
| .TP |
| \fB\-m\fR, \fB\-\-vm\fR N |
| spawn N workers spinning on malloc()/free() |
| .TP |
| \fB\-\-vm\-bytes\fR B |
| malloc B bytes per vm worker (default is 256MB) |
| .TP |
| \fB\-\-vm\-stride\fR B |
| touch a byte every B bytes (default is 4096) |
| .TP |
| \fB\-\-vm\-hang\fR N |
| sleep N secs before free (default none, 0 is inf) |
| .TP |
| \fB\-\-vm\-keep\fR |
| redirty memory instead of freeing and reallocating |
| .TP |
| \fB\-d\fR, \fB\-\-hdd\fR N |
| spawn N workers spinning on write()/unlink() |
| .TP |
| \fB\-\-hdd\-bytes\fR B |
| write B bytes per hdd worker (default is 1GB) |
| .PP |
| Example: stress \fB\-\-cpu\fR 8 \fB\-\-io\fR 4 \fB\-\-vm\fR 2 \fB\-\-vm\-bytes\fR 128M \fB\-\-timeout\fR 10s |
| .PP |
| Note: Numbers may be suffixed with s,m,h,d,y (time) or B,K,M,G (size). |
| .SH "SEE ALSO" |
| The full documentation for |
| .B stress |
| is maintained as a Texinfo manual. If the |
| .B info |
| and |
| .B stress |
| programs are properly installed at your site, the command |
| .IP |
| .B info stress |
| .PP |
| should give you access to the complete manual. |