CiiCube to Rust

This a direct translation from the project created by Blaldas.

The objective for this project is to see how does Rust compare to Java in this specific application, being it speed and memory usage.

In mean results are:

Language	Time to load	Memory Usage (only program)	Memory usage (with vm)
Rust	~954,46ms	39.16MB	-
Java	1042,6ms	~30MB	~120MB

Observations

Rust had a constant use of memory while Java fluctuated in memory usage and with free space not considered in the only program and in the with vm considered all the Runtime memory usage.

In conclusion Java can be nearly as fast as rust but still has the overhead of running in a Interpreter that takes more memory and cpu.

Metodology

for registiring the times for the java:

for i in {i..35} ; do clearbuffer; echo exit | java notUsingFastUtil.Main ../../../project4rust/datasets/datas | grep Miliseconds  | tr -s ' ' | tr '\t' ' '|cut -d ' ' -f 7 >> ../../../project4rust/benchmarks/time_java ; done

for registering the memory in java I used the original code from @Blaldas and used this command:

for i in {1..35}; do clearbuffer; echo exit | java notUsingFastUtil.Main ../../../project4rust/datasets/datas | grep used | tr -s ' ' | tr '\t'  ' ' | cut -f 4 -d ' ' >> ../../../project4rust/benchmarks/memory_no_vm ; done 

after that I changed the program to report all the memory used in the runtime saving it in a similar way:

for i in {1..35}; do clearbuffer; echo exit | java notUsingFastUtil.Main ../../../project4rust/datasets/datas | grep used | tr -s ' ' | tr '\t'  ' ' | cut -f 4 -d ' ' >> ../../../project4rust/benchmarks/memory_with_vm ; done 

for rust, the speed recording is the same as java:

for i in {1..35} ; do clearbuffer ;  echo exit | ./target/release/project4rust datasets/datas | grep Milliseconds | tr -s ' ' | tr '\t'  ' ' | cut -f 7 -d ' ' >> benchmarks/time_rust ; done

and finally for memory usage in rust:

for i in {1..35} ; do clearbuffer; echo exit | ./target/release/project4rust datasets/datas | grep memory -i | tr -s ' ' | tr '\t'  ' ' | cut -f 4 -d ' ' | replace 'K' "000" >> benchmarks/memory_rust ; done

For getting the means of the files i used the program datamash from the gnu utilities:

cat benchmarks/benchmark | datamash mean 1

it was used for every benchmark

Notes

clearbuffer is a script that cleans up the cache created by the os:

sync; echo 3 > /proc/sys/vm/drop_caches

All the benchmarks results are in the folder benchmarks and the datasets are in the datasets folder.