Linux – How to generate CPU load on Linux server

benchmarklinuxload-testing

I would like to test fake load on the server, I'm looking for some burn-in or benchmark command line utility that would generate CPU load on the system.

I would like to be able to burn-in only CPU (no harddisk load, network and co) and that I would be able to set the period in which the load will run. Meaning I want something that would be able to run: CPU load for 10min on the system.

Any ideas?

Best Answer

You can download and install the "stress" utility... It allows you generate CPU, Memory, Disk and IO load from the command line.

Homepage: http://people.seas.harvard.edu/~apw/stress/

FAQ: http://people.seas.harvard.edu/~apw/stress/FAQ

Related Solutions

Linux Hard Disk Load – How to Monitor Hard Disk Load on Linux

You can get a pretty good measure of this using the iostat tool.

% iostat -dx /dev/sda 5

Device:         rrqm/s   wrqm/s     r/s     w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
sda               0.78    11.03    1.19    2.82    72.98   111.07    45.80     0.13   32.78   1.60   0.64

The disk utilisation is listed in the last column. This is defined as

Percentage of CPU time during which I/O requests were issued to the device (band-width utilization for the device). Device saturation occurs when this value is close to 100%.

Linux – How to generate different levels of disk load on a Linux (2.4) system

You could make a big file (eg 1GB) and then use rsync to copy the file. rsync has a built in option to limit the bandwith. So you could copy the file at 10KiB/sec, or 50KiB/sec or 2MiB/sec, etc.

Best Answer

Related Solutions

Linux Hard Disk Load – How to Monitor Hard Disk Load on Linux

Linux – How to generate different levels of disk load on a Linux (2.4) system

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