This article describes various methods of system benchmarking on Linux. It covers CPUs, power usage, RAM, and graphics.
sys-power/powertop can guess the computer's current power usage in watts.
powertop -d | grep usage
Power usage (ACPI estimate): 15.7W (0.5 hours)
Some examples with different cryptographic commands. OpenSSL tries many different combinations of ciphers, key lengths and modes:
This could be bound to a single core (as root):
taskset -c 1 openssl speed
sys-fs/cryptsetup instead has less algorithms but includes kernel's cryptographic API if available:
Command time measures execution time of a sub command. Use a reproducible command to measure CPU performance:
time emerge -1 coreutils
real 2m33.483s user 2m6.310s sys 0m55.257s
Using emerge is not very reliable since the task is very complex and also requires I/O time and does not run parallel in all stages. Instead with sys-devel/bc calculation of PI burns CPU time for a single core only:
time echo "scale=5000; 4*a(1)" | bc -l
app-benchmarks/ramspeed can measure the computer's ram speed.
ramspeed -b1 -m4 | grep 4096 && ramspeed -b2 -m4 | grep 4096
INTEGER & WRITING 4096 Kb block: 1948.94 MB/s INTEGER & READING 4096 Kb block: 5208.66 MB/s
Some of the available packages to measure input-output-performance in general:
- sys-block/fio – be careful with tests writing to devices to not interfere with valuable data
Historically used to measure hard disk performance:
hdparm -tT /dev/sda
/dev/sda: Timing cached reads: 1076 MB in 2.00 seconds = 538.08 MB/sec Timing buffered disk reads: 242 MB in 3.01 seconds = 80.32 MB/sec
Using time to examine time spent in user and system space:
time bzip2 -c patch-3.3 > patch-3.3.bz2
real 0m13.272s user 0m7.606s sys 0m0.054s
time eix search
<snip> real 0m0.363s user 0m0.066s sys 0m0.008s
emerge --ask games-fps/nexuiz
Reset default options
If you have played nexuiz you should reset to default options for canonical benchmark results.
rm -r ~/.nexuiz/
nexuiz-glx -benchmark demos/demo1 -nosound 2>&1 | egrep -e '[0-9]+ frames'
1910 frames 42.0330749 seconds 45.4404063 fps, one-second fps min/avg/max: 35 46 63 (90 seconds)
emerge --ask games-fps/xonotic
If you have played Xonotic you should reset to default options for canonical benchmark results.
rm -r ~/.xonotic/
xonotic-glx -benchmark demos/the-big-keybench 2>&1 | egrep -e '[0-9]+ frames'
12568 frames 556.0637400 seconds 22.6017255 fps, one-second fps min/avg/max: 19 23 27 (207 seconds)
glxgears is a very basic OpenGL support test, it is not a real benchmark tool!
Obtain glxgears by emerging x11-apps/mesa-progs.
vblank_mode=0 glxgears & sleep 15 ; killall glxgears
5762 frames in 5.0 seconds = 1152.369 FPS 5806 frames in 5.0 seconds = 1161.017 FPS
- PowerTOP — a Linux utility that can monitor and display a system's electrical power usage.
- http://lbs.sourceforge.net/ - A SourceForge site dedicated to listing benchmark utilities for Linux.