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  1. 07 Nov, 2018 1 commit
    • Frank Tang's avatar
      [Intl] Add benchmark for toLocaleString/localeCompare · e23e1311
      Frank Tang authored 
      This is a bit of a performance bottleneck currently and
we're planning on improving performance by adding caching.
These benchmarks will allow us to measure the improvements
Add benchmark tests for
 String.prototype.localeCompare()
 Date.prototype.toLocaleString()
 Date.prototype.toLocaleDateString()
 Date.prototype.toLocaleTimeString()
 Number.prototype.toLocaleString()

Run with
python -u tools/run_perf.py --binary-override-path \
  out/x64.release/d8 --filter "JSTests/Strings/StringLocaleCompare" \
  test/js-perf-test/JSTests.json
python -u tools/run_perf.py --binary-override-path \
  out/x64.release/d8 --filter "JSTests/Dates" \
  test/js-perf-test/JSTests.json
python -u tools/run_perf.py --binary-override-path \
  out/x64.release/d8 --filter "JSTests/Numbers" \
  test/js-perf-test/JSTests.json

Before the landing of dffaff77

 git reset --hard 474a6d63
got
StringLocaleCompare-Strings(Score): 13240000
toLocaleDateString-Dates(Score): 1877000
toLocaleString-Dates(Score): 1197000
toLocaleTimeString-Dates(Score): 2147000
toLocaleDateString-Dates(Score): 1908000

After the landing of dffaff77
 git reset --hard dffaff77
got
StringLocaleCompare-Strings(Score): 97182
toLocaleDateString-Dates(Score): 10436
toLocaleString-Dates(Score): 10436
toLocaleTimeString-Dates(Score): 10669
toLocaleString-Numbers(Score): 2876


Bug: chromium:901748
Change-Id: Ibfea85fe668f1bfaacb2dfe08368cd920d2bbfc6
Reviewed-on: https://chromium-review.googlesource.com/c/1318099Reviewed-by: 's avatarSathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57323}
      e23e1311
  3. 29 May, 2018 1 commit
  5. 08 May, 2018 1 commit
  7. 13 Apr, 2018 1 commit
    • Mathias Bynens's avatar
      [js-perf-test] Add String#{starts,ends}With micro-benchmark · 2c7c8da1
      Mathias Bynens authored 
      This patch adds a micro-benchmark comparing
`string.startsWith(singleCodeUnit)`, `string[0]`,
`string.endsWith(singleCodeUnit)`, and `string[string.length - 1]`.

The benchmark can be used to measure any String#{starts,ends}With
optimizations we implement in the future.

Test:

    tools/run_perf.py --binary-override-path=out/x64.release/d8 \
      --filter=JSTests/Strings/StringStartsEndsWithComparison \
      --extra-flags=--trace-turbo test/js-perf-test/JSTests.json

Bug: v8:7453
Change-Id: I68cad197fbcbfc6b1938fc437776c319ee9f81df
Reviewed-on: https://chromium-review.googlesource.com/1011619Reviewed-by: 's avatarBenedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52589}
      2c7c8da1
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