Nope. ripgrep uses the `memchr` crate for substring search, and in my benchmarks it's generally faster than stringzilla:
$ rebar cmp results.csv --intersection -f huge
benchmark rust/memchr/memmem/prebuilt stringzilla/memmem/oneshot
--------- --------------------------- --------------------------
memmem/pathological/md5-huge-no-hash 47.4 GB/s (1.00x) 38.1 GB/s (1.25x)
memmem/pathological/md5-huge-last-hash 40.3 GB/s (1.00x) 23.4 GB/s (1.72x)
memmem/pathological/rare-repeated-huge-tricky 40.4 GB/s (1.04x) 42.0 GB/s (1.00x)
memmem/pathological/rare-repeated-huge-match 1977.7 MB/s (1.00x) 563.3 MB/s (3.51x)
memmem/subtitles/common/huge-en-that 35.9 GB/s (1.00x) 25.3 GB/s (1.42x)
memmem/subtitles/common/huge-en-you 15.9 GB/s (1.00x) 9.5 GB/s (1.67x)
memmem/subtitles/common/huge-en-one-space 1376.4 MB/s (1.00x) 1364.0 MB/s (1.01x)
memmem/subtitles/common/huge-ru-that 29.0 GB/s (1.00x) 15.5 GB/s (1.87x)
memmem/subtitles/common/huge-ru-not 16.0 GB/s (1.00x) 3.5 GB/s (4.53x)
memmem/subtitles/common/huge-ru-one-space 2.6 GB/s (1.00x) 2.4 GB/s (1.08x)
memmem/subtitles/common/huge-zh-that 31.2 GB/s (1.00x) 23.8 GB/s (1.31x)
memmem/subtitles/common/huge-zh-do-not 19.4 GB/s (1.00x) 12.1 GB/s (1.59x)
memmem/subtitles/common/huge-zh-one-space 5.3 GB/s (1.05x) 5.6 GB/s (1.00x)
memmem/subtitles/never/huge-en-john-watson 41.2 GB/s (1.00x) 31.2 GB/s (1.32x)
memmem/subtitles/never/huge-en-all-common-bytes 47.9 GB/s (1.00x) 37.5 GB/s (1.28x)
memmem/subtitles/never/huge-en-some-rare-bytes 43.4 GB/s (1.00x) 42.7 GB/s (1.02x)
memmem/subtitles/never/huge-en-two-space 42.2 GB/s (1.00x) 30.7 GB/s (1.37x)
memmem/subtitles/never/huge-ru-john-watson 42.2 GB/s (1.00x) 42.1 GB/s (1.00x)
memmem/subtitles/never/huge-zh-john-watson 47.6 GB/s (1.00x) 34.0 GB/s (1.40x)
memmem/subtitles/rare/huge-en-sherlock-holmes 40.8 GB/s (1.05x) 42.9 GB/s (1.00x)
memmem/subtitles/rare/huge-en-sherlock 36.7 GB/s (1.16x) 42.5 GB/s (1.00x)
memmem/subtitles/rare/huge-en-medium-needle 47.7 GB/s (1.00x) 31.3 GB/s (1.52x)
memmem/subtitles/rare/huge-en-long-needle 44.5 GB/s (1.00x) 32.0 GB/s (1.39x)
memmem/subtitles/rare/huge-en-huge-needle 45.7 GB/s (1.00x) 33.4 GB/s (1.37x)
memmem/subtitles/rare/huge-ru-sherlock-holmes 42.1 GB/s (1.00x) 42.2 GB/s (1.00x)
memmem/subtitles/rare/huge-ru-sherlock 42.3 GB/s (1.01x) 42.9 GB/s (1.00x)
memmem/subtitles/rare/huge-zh-sherlock-holmes 46.7 GB/s (1.00x) 33.1 GB/s (1.41x)
memmem/subtitles/rare/huge-zh-sherlock 47.4 GB/s (1.00x) 42.8 GB/s (1.11x)
If you want to run the benchmarks yourself, you can. First, get rebar[1]. Then, from the root of the `memchr` repository[2]:
$ rebar build -e 'rust/memchr/memmem/prebuilt' -e 'stringzilla/memmem/oneshot'
stringzilla/memmem/oneshot: running: cd "benchmarks/./engines/stringzilla" && "cargo" "build" "--release"
stringzilla/memmem/oneshot: build complete for version 3.12.3
rust/memchr/memmem/prebuilt: running: cd "benchmarks/./engines/rust-memchr" && "cargo" "build" "--release"
rust/memchr/memmem/prebuilt: build complete for version 2.7.4
$ rebar measure -e 'rust/memchr/memmem/prebuilt' -e 'stringzilla/memmem/oneshot' | tee results.csv
$ rebar rank results.csv
Engine Version Geometric mean of speed ratios Benchmark count
------ ------- ------------------------------ ---------------
rust/memchr/memmem/prebuilt 2.7.4 1.14 57
stringzilla/memmem/oneshot 3.12.3 1.43 54
$ rebar cmp results.csv --intersection -f never/huge
benchmark rust/memchr/memmem/prebuilt stringzilla/memmem/oneshot
--------- --------------------------- --------------------------
memmem/subtitles/never/huge-en-john-watson 41.2 GB/s (1.00x) 31.2 GB/s (1.32x)
memmem/subtitles/never/huge-en-all-common-bytes 47.9 GB/s (1.00x) 37.5 GB/s (1.28x)
memmem/subtitles/never/huge-en-some-rare-bytes 43.4 GB/s (1.00x) 42.7 GB/s (1.02x)
memmem/subtitles/never/huge-en-two-space 42.2 GB/s (1.00x) 30.7 GB/s (1.37x)
memmem/subtitles/never/huge-ru-john-watson 42.2 GB/s (1.00x) 42.1 GB/s (1.00x)
memmem/subtitles/never/huge-zh-john-watson 47.6 GB/s (1.00x) 34.0 GB/s (1.40x)