It looks like the bit of code that is responsible for performing textconv conversions is single-threaded, even if git-grep is provided a number of threads to use. This greatly limits the usability of textconv filters for grep expressions over a large number of files. Note the difference in total CPU usage in the following expressions: $ git grep --threads 12 -e foobar --and -e fizzbuzz &> /dev/null 0.24s user 0.28s system 710% cpu 0.073 total $ git grep --threads 12 -e foobar --and -e fizzbuzz --textconv &> /dev/null 0.90s user 1.75s system 110% cpu 2.390 total $ git version git version 2.27.0 Zach Riggle
