🌐 US-Proxy
class="logged-out env-production page-responsive" style="word-wrap: break-word;" >
Skip to content

enable windows arm64 build of google-crc32c #18624

Open
Open
enable windows arm64 build of google-crc32c#18624
Labels
triage meI really want to be triaged.type: feature request‘Nice-to-have’ improvement, new feature or different behavior or design.

Description

@xieofxie
xieofxie
opened on Oct 10, 2026

Determine this is the right repository

  • I determined this is the correct repository in which to report this feature request.

Summary of the feature request

e.g. I would like to easily be able to do FOO by simply coding BAR.

Currently google-crc32c python package only have windows amd64 built.
As a completement of this pr google/crc32c#73

Desired code experience

file: main.py

   def my_ideal_code():
     ...
     some_data = my_new_feature()
     do_something_with(some_data))

Expected results

e.g. my_new_feature() should return FOO

API client name and version

No response

Use case

e.g. This feature would be useful in a scenario where I need to process large amounts of data efficiently.

Additional context

e.g. This feature would help improve the performance of my application.

Activity

  1. xieofxie
    added
    type: feature request‘Nice-to-have’ improvement, new feature or different behavior or design.
    triage meI really want to be triaged.
    on Oct 10, 2026

  2. xieofxie commented on Oct 10, 2026

    @xieofxie
    xieofxie
    on Oct 10, 2026
    Author

    Working on a pr here xieofxie#1

  3. chirizxc commented on Oct 11, 2026

    @chirizxc
    chirizxc
    on Oct 11, 2026

    Without wheel, the speed of pure Python implementation is really dismal:

    System Information

    Property Value
    OS Windows-11-10.0.26200-SP0
    CPU Cobalt 100
    Python 3.15.0rc3
    Timer QueryPerformanceCounter(), resolution: 100 ns

    32 B

    Library Time Throughput Relative
    fastcrc.crc32.iscsi 🥇 0.0925 µs 329.8 MB/s 1.00x
    crc32c_rs.crc32c_aes_v3s4x2e_v2 0.0988 µs 308.9 MB/s 0.94x
    crc32c_rs.crc32c_aes_crc_v12e_v1 0.0995 µs 306.8 MB/s 0.93x
    crc32c_rs.crc32c 0.1018 µs 299.7 MB/s 0.91x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 0.1050 µs 290.7 MB/s 0.88x
    crc32c_rs.crc32c_fallback 0.1064 µs 286.8 MB/s 0.87x
    crc32c.crc32c 0.1203 µs 253.7 MB/s 0.77x
    google_crc32c.value 6.7421 µs 4.5 MB/s 0.01x

    512 B

    Library Time Throughput Relative
    crc32c_rs.crc32c_aes_v3s4x2e_v2 🥇 0.1199 µs 4.0 GB/s 1.00x
    fastcrc.crc32.iscsi 0.1201 µs 4.0 GB/s 1.00x
    crc32c_rs.crc32c 0.1225 µs 3.9 GB/s 0.98x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 0.1318 µs 3.6 GB/s 0.91x
    crc32c_rs.crc32c_aes_crc_v12e_v1 0.1464 µs 3.3 GB/s 0.82x
    crc32c_rs.crc32c_fallback 0.2334 µs 2.0 GB/s 0.51x
    crc32c.crc32c 0.3538 µs 1.3 GB/s 0.34x
    google_crc32c.value 95.0804 µs 5.1 MB/s 0.00x

    1 KB

    Library Time Throughput Relative
    fastcrc.crc32.iscsi 🥇 0.1358 µs 7.0 GB/s 1.00x
    crc32c_rs.crc32c_aes_v3s4x2e_v2 0.1488 µs 6.4 GB/s 0.91x
    crc32c_rs.crc32c 0.1507 µs 6.3 GB/s 0.90x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 0.1540 µs 6.2 GB/s 0.88x
    crc32c_rs.crc32c_aes_crc_v12e_v1 0.2035 µs 4.7 GB/s 0.67x
    crc32c_rs.crc32c_fallback 0.3462 µs 2.8 GB/s 0.39x
    crc32c.crc32c 0.6038 µs 1.6 GB/s 0.22x
    google_crc32c.value 185.8703 µs 5.3 MB/s 0.00x

    64 KB

    Library Time Throughput Relative
    crc32c_rs.crc32c_aes_v3s4x2e_v2 🥇 1.7194 µs 35.5 GB/s 1.00x
    crc32c_rs.crc32c 1.7259 µs 35.4 GB/s 1.00x
    crc32c_rs.crc32c_aes_crc_v12e_v1 2.8415 µs 21.5 GB/s 0.61x
    fastcrc.crc32.iscsi 3.0286 µs 20.2 GB/s 0.57x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 3.0376 µs 20.1 GB/s 0.57x
    crc32c_rs.crc32c_fallback 15.5859 µs 3.9 GB/s 0.11x
    crc32c.crc32c 32.2652 µs 1.9 GB/s 0.05x
    google_crc32c.value 11829.9932 µs 5.3 MB/s 0.00x

    512 KB

    Library Time Throughput Relative
    crc32c_rs.crc32c 🥇 11.4859 µs 42.5 GB/s 1.00x
    crc32c_rs.crc32c_aes_v3s4x2e_v2 11.4918 µs 42.5 GB/s 1.00x
    crc32c_rs.crc32c_aes_crc_v12e_v1 21.2274 µs 23.0 GB/s 0.54x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 22.1400 µs 22.1 GB/s 0.52x
    fastcrc.crc32.iscsi 22.1530 µs 22.0 GB/s 0.52x
    crc32c_rs.crc32c_fallback 123.0388 µs 4.0 GB/s 0.09x
    crc32c.crc32c 257.3675 µs 1.9 GB/s 0.04x
    google_crc32c.value 95521.5167 µs 5.2 MB/s 0.00x

    1 MB

    Library Time Throughput Relative
    crc32c_rs.crc32c 🥇 23.5000 µs 41.6 GB/s 1.00x
    crc32c_rs.crc32c_aes_v3s4x2e_v2 23.7434 µs 41.1 GB/s 0.99x
    crc32c_rs.crc32c_aes_crc_v12e_v1 43.7856 µs 22.3 GB/s 0.54x
    fastcrc.crc32.iscsi 44.3529 µs 22.0 GB/s 0.53x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 44.4883 µs 22.0 GB/s 0.53x
    crc32c_rs.crc32c_fallback 246.2563 µs 4.0 GB/s 0.10x
    crc32c.crc32c 515.8861 µs 1.9 GB/s 0.05x
    google_crc32c.value 190941.1300 µs 5.2 MB/s 0.00x

    16 MB

    Library Time Throughput Relative
    crc32c_rs.crc32c 🥇 360.1108 µs 43.4 GB/s 1.00x
    crc32c_rs.crc32c_aes_v3s4x2e_v2 360.6241 µs 43.3 GB/s 1.00x
    crc32c_rs.crc32c_aes_crc_v12e_v1 676.0445 µs 23.1 GB/s 0.53x
    fastcrc.crc32.iscsi 700.4304 µs 22.3 GB/s 0.51x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 700.5330 µs 22.3 GB/s 0.51x
    crc32c_rs.crc32c_fallback 3928.6857 µs 4.0 GB/s 0.09x
    crc32c.crc32c 8229.6783 µs 1.9 GB/s 0.04x
    google_crc32c.value 3048257.7650 µs 5.2 MB/s 0.00x

    32 MB

    Library Time Throughput Relative
    crc32c_rs.crc32c 🥇 726.5256 µs 43.0 GB/s 1.00x
    crc32c_rs.crc32c_aes_v3s4x2e_v2 728.2819 µs 42.9 GB/s 1.00x
    crc32c_rs.crc32c_aes_crc_v12e_v1 1359.3352 µs 23.0 GB/s 0.53x
    fastcrc.crc32.iscsi 1406.4379 µs 22.2 GB/s 0.52x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 1410.4195 µs 22.2 GB/s 0.52x
    crc32c_rs.crc32c_fallback 7885.0871 µs 4.0 GB/s 0.09x
    crc32c.crc32c 16477.6788 µs 1.9 GB/s 0.04x
    google_crc32c.value 6072590.3433 µs 5.3 MB/s 0.00x

    64 MB

    Library Time Throughput Relative
    crc32c_rs.crc32c 🥇 1510.6852 µs 41.4 GB/s 1.00x
    crc32c_rs.crc32c_aes_v3s4x2e_v2 1526.8233 µs 40.9 GB/s 0.99x
    crc32c_rs.crc32c_aes_crc_v12e_v1 2821.3014 µs 22.2 GB/s 0.54x
    fastcrc.crc32.iscsi 2856.9846 µs 21.9 GB/s 0.53x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 2899.6770 µs 21.6 GB/s 0.52x
    crc32c_rs.crc32c_fallback 15888.5421 µs 3.9 GB/s 0.10x
    crc32c.crc32c 33000.4375 µs 1.9 GB/s 0.05x
    google_crc32c.value 12145277.0017 µs 5.3 MB/s 0.00x

    128 MB

    Library Time Throughput Relative
    crc32c_rs.crc32c 🥇 3773.8787 µs 33.1 GB/s 1.00x
    crc32c_rs.crc32c_aes_v3s4x2e_v2 3847.1547 µs 32.5 GB/s 0.98x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 6438.1812 µs 19.4 GB/s 0.59x
    crc32c_rs.crc32c_aes_crc_v12e_v1 6445.5186 µs 19.4 GB/s 0.59x
    fastcrc.crc32.iscsi 6613.1298 µs 18.9 GB/s 0.57x
    crc32c_rs.crc32c_fallback 31658.4958 µs 3.9 GB/s 0.12x
    crc32c.crc32c 65978.8425 µs 1.9 GB/s 0.06x
    google_crc32c.value 24243750.1133 µs 5.3 MB/s 0.00x

    256 MB

    Library Time Throughput Relative
    crc32c_rs.crc32c 🥇 10242.1257 µs 24.4 GB/s 1.00x
    crc32c_rs.crc32c_aes_v3s4x2e_v2 10684.4924 µs 23.4 GB/s 0.96x
    fastcrc.crc32.iscsi 13202.2096 µs 18.9 GB/s 0.78x
    crc32c_rs.crc32c_aes_sha3_v9s3x2e_s3 13379.0719 µs 18.7 GB/s 0.77x
    crc32c_rs.crc32c_aes_crc_v12e_v1 13747.2660 µs 18.2 GB/s 0.75x
    crc32c_rs.crc32c_fallback 63264.5825 µs 4.0 GB/s 0.16x
    crc32c.crc32c 131987.8650 µs 1.9 GB/s 0.08x
    google_crc32c.value 48402340.4617 µs 5.3 MB/s 0.00x

  4. xieofxie commented on Oct 12, 2026

    @xieofxie
    xieofxie
    on Oct 12, 2026
    Author
    I did some testing pure python vs arm64 native `google_crc32c.cext.value` versus `google_crc32c.python.value`

    Results

    Data size Native ARM64 time/call Pure-Python time/call Native speedup
    32 B 0.056 µs 3.84 µs 69×
    512 B 0.086 µs 55.55 µs 643×
    1 KiB 0.136 µs 107.00 µs 787×
    64 KiB 3.45 µs 6.96 ms 2,020×
    512 KiB 28.18 µs 57.37 ms 2,036×
    1 MiB 54.23 µs 109.47 ms 2,018×
    16 MiB 0.932 ms 1.797 s 1,928×

  5. xieofxie commented on Oct 12, 2026

    @xieofxie
    xieofxie
    on Oct 12, 2026
    Author

    In the pr, is it suggested to use python as build script instead of bat, may be a pure python migration pr first ?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    triage meI really want to be triaged.type: feature request‘Nice-to-have’ improvement, new feature or different behavior or design.

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions