• Comparison between single-threaded and multithreaded counting.
• The test was performed on computer with an Intel Core i7-8700 CPU (6C/12T) and 16GB DDR4 RAM.
• Measured against commit: 213d23e
• Input files for test were generated by generator.cpp
• Every test result is averaged from 3 test runs.
• All tests were done on Release build
• Measuring one input file is meaningless because of implementation (One thread is processing one file).

• Test case: 2 input files, 1M words
• Files generated by: ./Generator 1000000 1000000 -r 1 10
• Words counted by: ./WordCount words1.txt words2.txt -of output.txt [-mt]
• Results:
  • ST: 2353ms
  • MT: 1679ms (1,40x faster)

• Test case: 6 input files, ~500K words
• Files generated by: ./Generator 450000 475000 500000 510000 525000 550000 -r 1 10
• Words counted by: ./WordCount words1.txt words2.txt words3.txt ... -of output.txt [-mt]
• Results:
  • ST: 3185ms
  • MT: 1720ms (1,85x faster)

(Same as Test 2, but counting trigrams.)

• Results:
  • ST: 5054ms
  • MT: 3144ms (1,60x faster)