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process.hrtime() is much slower in 14.x #36417

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process.hrtime() is much slower in 14.x#36417

Description

@spazmodius
spazmodius
opened on Dec 6, 2020

process.hrtime() takes twice as long to execute in Node.js 14, compared to Node.js 12.

  • Version: 14.15.0 vs 12.18.4
  • Platform: Microsoft Windows NT 10.0.19041.0 x64
  • Subsystem: process

What steps will reproduce the bug?

Running benchmark/process/bench-hrtime.js in Node.js 12 and 14

> node -v
v12.18.4

> node bm\process\bench-hrtime.js
process\bench-hrtime.js type="raw" n=1000000: 19,672,995.469309144
process\bench-hrtime.js type="diff" n=1000000: 20,285,745.00412815
process\bench-hrtime.js type="bigint" n=1000000: 20,371,868.07993106

v14.15.0
        
> node bm\process\bench-hrtime.js
process\bench-hrtime.js type="raw" n=1000000: 9,509,147.32426858
process\bench-hrtime.js type="diff" n=1000000: 9,260,999.984256301
process\bench-hrtime.js type="bigint" n=1000000: 9,194,852.721446535

Activity

  1. devsnek commented on Dec 6, 2020

    @devsnek
    devsnek
    on Dec 6, 2020
    Member

    hrtime should be about 2x faster in v15

  2. bzoz commented on Dec 7, 2020

    @bzoz
    bzoz
    on Dec 7, 2020
    Contributor

    Looks like this is already fixed:

    v12.20.0
process\bench-hrtime.js type="raw" n=1000000: 19,145,131.584489383
process\bench-hrtime.js type="diff" n=1000000: 19,097,235.484191306
process\bench-hrtime.js type="bigint" n=1000000: 18,287,018.411370136

v14.15.1
process\bench-hrtime.js type="raw" n=1000000: 10,456,215.121987434
process\bench-hrtime.js type="diff" n=1000000: 10,417,621.615314737
process\bench-hrtime.js type="bigint" n=1000000: 9,485,326.20036803

v15.3.0
process\bench-hrtime.js type="raw" n=1000000: 20,348,612.428118527
process\bench-hrtime.js type="diff" n=1000000: 19,892,421.78299755
process\bench-hrtime.js type="bigint" n=1000000: 23,809,977.33290158
  3. bzoz
    closed this as completedon Dec 7, 2020

  4. spazmodius commented on Dec 7, 2020

    @spazmodius
    spazmodius
    on Dec 7, 2020
    Author

    You mean fixed in 15? Because what you posted above still shows degradation in 14.15.1

  5. spazmodius
    added a commit that references this issue on May 28, 2021

    opt-out on Node 14.x

    1bd4a89
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