Raspberry Pi 2 benchmarking
using sysbench and Java
Benchmarking
Benchmarking is done on three computers using sysbench and Fibonacci sequence program in Java.
- Raspberry Pi
Single core 700MHz, 512MB RAM - Raspberry Pi 2
Quad core 900MHz, 1GB RAM - Laptop running Ubuntu 14.04
Quad core 2.50GHz, 16GB RAM
Benchmarking using sysbench
Install sysbench using sudo apt-get install sysbench
Single threaded benchmark
-
Raspberry Pi
$ sysbench --test=cpu --cpu-max-prime=2000 run --num-threads=1 sysbench 0.4.12: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 1 Doing CPU performance benchmark Threads started! Done. Maximum prime number checked in CPU test: 2000 Test execution summary: total time: 64.2297s total number of events: 10000 total time taken by event execution: 64.1675 per-request statistics: min: 5.34ms avg: 6.42ms max: 30.93ms approx. 95 percentile: 15.46ms Threads fairness: events (avg/stddev): 10000.0000/0.00 execution time (avg/stddev): 64.1675/0.00 -
Raspberry Pi 2
$ sysbench --test=cpu --cpu-max-prime=2000 run --num-threads=1 sysbench 0.4.12: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 1 Doing CPU performance benchmark Threads started! Done. Maximum prime number checked in CPU test: 2000 Test execution summary: total time: 31.0586s total number of events: 10000 total time taken by event execution: 31.0443 per-request statistics: min: 3.08ms avg: 3.10ms max: 4.94ms approx. 95 percentile: 3.11ms Threads fairness: events (avg/stddev): 10000.0000/0.00 execution time (avg/stddev): 31.0443/0.00 -
Laptop running Ubuntu 14.04
$ sysbench --test=cpu --cpu-max-prime=2000 run --num-threads=1 sysbench 0.4.12: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 1 Doing CPU performance benchmark Threads started! Done. Maximum prime number checked in CPU test: 2000 Test execution summary: total time: 1.1415s total number of events: 10000 total time taken by event execution: 1.1407 per-request statistics: min: 0.11ms avg: 0.11ms max: 0.49ms approx. 95 percentile: 0.12ms Threads fairness: events (avg/stddev): 10000.0000/0.00 execution time (avg/stddev): 1.1407/0.00
Multi-threaded benchmark
-
Raspberry Pi
Oh No!, it has only one CPU.
No use in running with more threads. -
Raspberry Pi 2
$ sysbench --test=cpu --cpu-max-prime=20000 run --num-threads=4 sysbench 0.4.12: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 4 Doing CPU performance benchmark Threads started! Done. Maximum prime number checked in CPU test: 20000 Test execution summary: total time: 190.8656s total number of events: 10000 total time taken by event execution: 763.3344 per-request statistics: min: 75.89ms avg: 76.33ms max: 92.81ms approx. 95 percentile: 76.91ms Threads fairness: events (avg/stddev): 2500.0000/13.00 execution time (avg/stddev): 190.8336/0.02 -
Laptop running Ubuntu 14.04
$ sysbench --test=cpu --cpu-max-prime=20000 run --num-threads=4 sysbench 0.4.12: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 4 Doing CPU performance benchmark Threads started! Done. Maximum prime number checked in CPU test: 20000 Test execution summary: total time: 8.4443s total number of events: 10000 total time taken by event execution: 33.7718 per-request statistics: min: 2.90ms avg: 3.38ms max: 11.35ms approx. 95 percentile: 3.40ms Threads fairness: events (avg/stddev): 2500.0000/13.75 execution time (avg/stddev): 8.4429/0.00
Benchmarking using Java
Note: See Raspberry Pi 2 setup to install Java.
Fibonacci Class shown below is used to benchmark.
public class Fibonacci {
public static void main(String[] args){
Fibonacci fib = new Fibonacci();
Long out = fib.fib(Long.parseLong(args[0]));
System.out.println(out);
}
public long fib(long n){
if(n==0L){
return 0L;
} else if(n==1L){
return 1L;
} else {
return fib(n-1) + fib(n-2);
}
}
}
-
Raspberry Pi
$ time java Fibonacci 10 55 real 0m1.644s user 0m1.350s sys 0m0.200s $ time java Fibonacci 20 6765 real 0m2.118s user 0m1.460s sys 0m0.110s $ time java Fibonacci 30 832040 real 0m1.945s user 0m1.580s sys 0m0.120s $ time java Fibonacci 40 102334155 real 0m20.991s user 0m18.160s sys 0m0.200s -
Raspberry Pi 2
$ time java Fibonacci 10 55 real 0m0.535s user 0m0.560s sys 0m0.040s $ time java Fibonacci 20 6765 real 0m0.529s user 0m0.500s sys 0m0.100s $ time java Fibonacci 30 832040 real 0m0.575s user 0m0.570s sys 0m0.070s $ time java Fibonacci 40 102334155 real 0m10.035s user 0m10.030s sys 0m0.070s -
Laptop running Ubuntu 14.04
$ time java Fibonacci 10 55 real 0m0.077s user 0m0.074s sys 0m0.012s $ time java Fibonacci 20 6765 real 0m0.123s user 0m0.073s sys 0m0.025s $ time java Fibonacci 30 832040 real 0m0.091s user 0m0.078s sys 0m0.023s $ time java Fibonacci 40 102334155 real 0m0.890s user 0m0.898s sys 0m0.004s
Conclusion
In one line, Raspberry Pi 2 is much faster than the Raspberry Pi, still it is many folds slower than the traditional laptop/desktop processors.
I think, If you are looking for 24x7 low cost computer, this is the one.
Beside, you can do lot of experiments with it, that cannot be done with laptop/desktop easily.