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Thread: Zstandard

  1. #391
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    Quote Originally Posted by Bulat Ziganshin View Post
    Note that m/t also affects level 21
    Confirmed:

    2,136,340,302 bytes, 4,604.696 sec. - 15.121 sec., zstd -21 --ultra --single-thread (v1.4.4)

  2. #392
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    Thanks @Sportman for exposing this use case thanks to your new benchmark !
    It made it possible to identify the issue, and @terrelln basically nailed it in a new patch.
    This issue will be fixed in the next release (v1.4.5).

  3. Thanks:

    Sportman (18th January 2020)

  4. #393
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    2,337,506,087 bytes, 2,596.459 sec. - 13.159 sec., zstd -18 --single-thread (v1.4.4)
    2,299,225,559 bytes, 3,196.329 sec. - 13.559 sec., zstd -19 --single-thread (v1.4.4)
    2,197,171,322 bytes, 3,947.477 sec. - 14.471 sec., zstd -20 --ultra --single-thread (v1.4.4)
    Last edited by Sportman; 18th January 2020 at 04:01.

  5. Thanks:

    Cyan (18th January 2020)

  6. #394
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    Thanks for the benchmarks sportman! The multithreading issue is fixed in the latest dev branch, and we now mention --single-thread in the help.

  7. Thanks (2):

    JamesB (20th January 2020),Sportman (18th January 2020)

  8. #395
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    Cyan and Terrelln thanks for picking up and fixing this issue so fast, can't wait till the official release to see if there are more files with till 10% storage and till 8% compression speed savings in big data production environments with zstd ultra modes.

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