Comparison: Benchmarking base64 random value output from Rust, C language, and shell script

Hello, it's me, the incompetent one.

GNU/Linux can generate random values from /dev/random, but how much difference is there when compared to Clang?
It goes without saying that Clang is faster! But let's take a look anyway.

Execution environment: ThinkPad X230

Sorry it's old.

time for i in {1…500}; do head -c 15 /dev/random | base64; done

~~~
lsWpWr1qsqAxqPCwkHLB
jw8gkw+m6H1sfeFoIL9t
5nGDUKmyFgley8vVcqll
sZ+rLscmCvMOH8EJHmrm

real    0m1.405s
user    0m1.344s
sys     0m0.556s

time for i in {1…500}; do ./random ; done

~~~
FyLg5Ad/ja2eqffx725k
wTXQ3Yuaqom7H7LpPjHB
KFX5xaDBj5s4yWDDHpnV
2e0nQA7IAdM9RiTO4tKV

real    0m0.424s
user    0m0.311s
sys     0m0.144s

Oh...
As expected from C.

And then Rust.

time for i in {1…500}; do ./rran ; done

~~~
bx6QlFg2vpc8RZywqwdD
kJRKlrCq7nZgGG9SBuqa
JKHpR14IAxiB/1cDF1QZ
z/4IujC1bbe9FteRRh2P

real 0m0.658s
user 0m0.435s
sys 0m0.256s

Oh...

Conclusion

C is the strongest, but considering learning and coding costs, Rust is easier.
Considering readability as a scripting language, I think shell scripts also have sufficient capability. Because,
**head -c 15 /dev/random | base64
**you can output it with just that...!?

Please excuse the rough comparison. Sorry.