Add a Note for Benchmarks' Profiles in README

[tareknaser]

Resolves #40
Related issue: ARK-Builders/arklib#30

[github-actions]

Benchmark for 5302be6

Click to view benchmark

Test	Base	PR	%
../test-assets/lena.jpg/compute_bytes	13.3±0.05µs	13.4±0.23µs	+0.75%
../test-assets/test.pdf/compute_bytes	107.7±0.99µs	107.6±0.44µs	-0.09%
compute_bytes_large/compute_bytes	135.8±0.89µs	138.9±1.39µs	+2.28%
compute_bytes_medium/compute_bytes	26.9±0.18µs	26.9±0.28µs	0.00%
compute_bytes_small/compute_bytes	127.5±2.67ns	127.3±1.58ns	-0.16%
index_build/index_build/../test-assets/	159.1±0.55µs	157.8±1.28µs	-0.82%

[kirillt]

@tareknaser have you encountered this error?

...
    Finished bench [optimized + debuginfo] target(s) in 32.70s

dtrace: system integrity protection is on, some features will not be available
dtrace: failed to initialize dtrace: DTrace requires additional privileges

failed to sample program

1. I guess, the privileges problem can be worked around by using sudo. Although that's not great solution.
2. What is system integrity in dtrace?

[tareknaser]

I've noticed the same problem on my Mac.

Found this information online:
"On all current MacOS versions, System Integrity Protection (SIP) is enabled by default and prevents most uses of dtrace and other tools and scripts based on it (i.e. dtruss)"

[kirillt]

@tareknaser so if I understand correctly, benchmarking on macOS is only possible after restarting in recovery mode...

https://developer.apple.com/documentation/security/disabling_and_enabling_system_integrity_protection

[kirillt]

@tareknaser it seems there is another recipe which allows to restart in recovery mode only once: https://forums.developer.apple.com/forums/thread/17452

Could you validate this instruction?

[tareknaser]

benchmarking on macOS is only possible after restarting in recovery mode

Added a note with possible solutions to the issue

[github-actions]

Benchmark for 2898f65

Click to view benchmark

Test	Base	PR	%
../test-assets/lena.jpg/compute_bytes	13.4±0.04µs	13.3±0.17µs	-0.75%
../test-assets/test.pdf/compute_bytes	129.9±1.16µs	111.3±1.05µs	-14.32%
compute_bytes_large/compute_bytes	163.8±5.21µs	139.4±2.53µs	-14.90%
compute_bytes_medium/compute_bytes	28.2±0.25µs	26.9±0.61µs	-4.61%
compute_bytes_small/compute_bytes	129.6±1.24ns	130.2±2.58ns	+0.46%
index_build/index_build/../test-assets/	157.4±0.72µs	159.1±0.98µs	+1.08%