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os: improve loadavg() performance#11516

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mscdex merged 1 commit intonodejs:masterfrom
mscdex:os-loadavg-perf
Feb 26, 2017
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os: improve loadavg() performance#11516
mscdex merged 1 commit intonodejs:masterfrom
mscdex:os-loadavg-perf

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@mscdex mscdex commented Feb 23, 2017 •
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Results with included benchmark:

                         improvement confidence      p.value
 os/loadavg.js n=5000000    150.91 %        *** 1.380968e-49

CI: https://ci.nodejs.org/job/node-test-pull-request/6563/

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • commit message follows commit guidelines
Affected core subsystem(s)
  • os

@mscdex mscdex added os Issues and PRs related to the os subsystem. performance Issues and PRs related to the performance of Node.js. labels Feb 23, 2017
@nodejs-github-bot nodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. os Issues and PRs related to the os subsystem. labels Feb 23, 2017
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JacksonTian commented Feb 23, 2017

LGTM

mhdawson
mhdawson approved these changes Feb 24, 2017
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nice, LGTM

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mhdawson commented Feb 24, 2017

CI run: https://ci.nodejs.org/job/node-test-pull-request/6580/

@mscdex
os: improve loadavg() performance
efdc571 
PR-URL: nodejs#11516
Reviewed-By: Jackson Tian <shyvo1987@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
@mscdex mscdex merged commit efdc571 into nodejs:master Feb 26, 2017
@mscdex mscdex deleted the os-loadavg-perf branch February 26, 2017 01:57
italoacasas pushed a commit to italoacasas/node that referenced this pull request Feb 27, 2017
@mscdex
os: improve loadavg() performance
db06c73 
PR-URL: nodejs#11516
Reviewed-By: Jackson Tian <shyvo1987@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
@italoacasas italoacasas mentioned this pull request Feb 27, 2017
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jasnell commented Mar 7, 2017

@nodejs/lts @mscdex ... should this land in v6.x-staging?

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mscdex commented Mar 7, 2017 •
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@jasnell I haven't specifically tested the performance, but I would guess it should still see an increase.

Why the dont-land-on-v4.x?

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jasnell commented Mar 7, 2017

The don't land on v4 is largely precautionary. If it can be shown to be safe we can pick it back

jasnell pushed a commit that referenced this pull request Mar 9, 2017
@mscdex @jasnell
os: improve loadavg() performance
f343cb3 
PR-URL: #11516
Reviewed-By: Jackson Tian <shyvo1987@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
MylesBorins pushed a commit that referenced this pull request Mar 9, 2017
@mscdex @MylesBorins
os: improve loadavg() performance
5bfa43d 
PR-URL: #11516
Reviewed-By: Jackson Tian <shyvo1987@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
@MylesBorins MylesBorins mentioned this pull request Mar 9, 2017
Merged
MylesBorins added a commit that referenced this pull request Mar 21, 2017
@MylesBorins
2017-03-21, Version 6.10.1 'Boron' (LTS)
e70d0b0 
Notable changes

* performance: The performance of several APIs has been improved.
  - `Buffer.compare()` is up to 35% faster on average. (Brian White)
    #10927
  - `buffer.toJSON()` is up to 2859% faster on average. (Brian White)
    #10895
  - `fs.*statSync()` functions are now up to 9.3% faster on average.
    (Brian White) #11522
  - `os.loadavg` is up to 151% faster. (Brian White)
    #11516
  - `process.memoryUsage()` is up to 34% faster. (Brian White)
    #11497
  - `querystring.unescape()` for `Buffer`s is 15% faster on average.
    (Brian White) #10837
  - `querystring.stringify()` is up to 7.8% faster on average.
    (Brian White) #10852
  - `querystring.parse()` is up to 21% faster on average. (Brian White)
    #10874

* IPC:
  - Batched writes have been enabled for process IPC on platforms that
    support Unix Domain Sockets. (Alexey Orlenko)
    #10677
  - Performance gains may be up to 40% for some workloads.

* child_process:
  - `spawnSync` now returns a null `status` when child is terminated by
    a signal. (cjihrig) #11288
  - This fixes the behavior to act like `spawn()` does.

* http:
  - Control characters are now always rejected when using
    `http.request()`. (Ben Noordhuis)
    #8923
  - Debug messages have been added for cases when headers contain
    invalid values. (Evan Lucas)
    #9195

* node:
  - Heap statistics now support values larger than 4GB. (Ben Noordhuis)
    #10186

* timers:
  - Timer callbacks now always maintain order when interacting with
    domain error handling. (John Barboza)
    #10522

PR-URL: #11759
MylesBorins added a commit that referenced this pull request Mar 21, 2017
@MylesBorins
2017-03-21, Version 6.10.1 'Boron' (LTS)
2569c90 
Notable changes

* performance: The performance of several APIs has been improved.
  - `Buffer.compare()` is up to 35% faster on average. (Brian White)
    #10927
  - `buffer.toJSON()` is up to 2859% faster on average. (Brian White)
    #10895
  - `fs.*statSync()` functions are now up to 9.3% faster on average.
    (Brian White) #11522
  - `os.loadavg` is up to 151% faster. (Brian White)
    #11516
  - `process.memoryUsage()` is up to 34% faster. (Brian White)
    #11497
  - `querystring.unescape()` for `Buffer`s is 15% faster on average.
    (Brian White) #10837
  - `querystring.stringify()` is up to 7.8% faster on average.
    (Brian White) #10852
  - `querystring.parse()` is up to 21% faster on average. (Brian White)
    #10874

* IPC:
  - Batched writes have been enabled for process IPC on platforms that
    support Unix Domain Sockets. (Alexey Orlenko)
    #10677
  - Performance gains may be up to 40% for some workloads.

* child_process:
  - `spawnSync` now returns a null `status` when child is terminated by
    a signal. (cjihrig) #11288
  - This fixes the behavior to act like `spawn()` does.

* http:
  - Control characters are now always rejected when using
    `http.request()`. (Ben Noordhuis)
    #8923
  - Debug messages have been added for cases when headers contain
    invalid values. (Evan Lucas)
    #9195

* node:
  - Heap statistics now support values larger than 4GB. (Ben Noordhuis)
    #10186

* timers:
  - Timer callbacks now always maintain order when interacting with
    domain error handling. (John Barboza)
    #10522

PR-URL: #11759
imyller added a commit to imyller/meta-nodejs that referenced this pull request Apr 20, 2017
@imyller
2017-03-21, Version 6.10.1 'Boron' (LTS)
ccdb8bf 
    Notable changes

    * performance: The performance of several APIs has been improved.
      - `Buffer.compare()` is up to 35% faster on average. (Brian White)
        nodejs/node#10927
      - `buffer.toJSON()` is up to 2859% faster on average. (Brian White)
        nodejs/node#10895
      - `fs.*statSync()` functions are now up to 9.3% faster on average.
        (Brian White) nodejs/node#11522
      - `os.loadavg` is up to 151% faster. (Brian White)
        nodejs/node#11516
      - `process.memoryUsage()` is up to 34% faster. (Brian White)
        nodejs/node#11497
      - `querystring.unescape()` for `Buffer`s is 15% faster on average.
        (Brian White) nodejs/node#10837
      - `querystring.stringify()` is up to 7.8% faster on average.
        (Brian White) nodejs/node#10852
      - `querystring.parse()` is up to 21% faster on average. (Brian White)
        nodejs/node#10874

    * IPC:
      - Batched writes have been enabled for process IPC on platforms that
        support Unix Domain Sockets. (Alexey Orlenko)
        nodejs/node#10677
      - Performance gains may be up to 40% for some workloads.

    * child_process:
      - `spawnSync` now returns a null `status` when child is terminated by
        a signal. (cjihrig) nodejs/node#11288
      - This fixes the behavior to act like `spawn()` does.

    * http:
      - Control characters are now always rejected when using
        `http.request()`. (Ben Noordhuis)
        nodejs/node#8923
      - Debug messages have been added for cases when headers contain
        invalid values. (Evan Lucas)
        nodejs/node#9195

    * node:
      - Heap statistics now support values larger than 4GB. (Ben Noordhuis)
        nodejs/node#10186

    * timers:
      - Timer callbacks now always maintain order when interacting with
        domain error handling. (John Barboza)
        nodejs/node#10522

    PR-URL: nodejs/node#11759

Signed-off-by: Ilkka Myller <ilkka.myller@nodefield.com>
imyller added a commit to imyller/meta-nodejs that referenced this pull request Apr 20, 2017
@imyller
2017-03-21, Version 6.10.1 'Boron' (LTS)
e47cbbd 
    Notable changes

    * performance: The performance of several APIs has been improved.
      - `Buffer.compare()` is up to 35% faster on average. (Brian White)
        nodejs/node#10927
      - `buffer.toJSON()` is up to 2859% faster on average. (Brian White)
        nodejs/node#10895
      - `fs.*statSync()` functions are now up to 9.3% faster on average.
        (Brian White) nodejs/node#11522
      - `os.loadavg` is up to 151% faster. (Brian White)
        nodejs/node#11516
      - `process.memoryUsage()` is up to 34% faster. (Brian White)
        nodejs/node#11497
      - `querystring.unescape()` for `Buffer`s is 15% faster on average.
        (Brian White) nodejs/node#10837
      - `querystring.stringify()` is up to 7.8% faster on average.
        (Brian White) nodejs/node#10852
      - `querystring.parse()` is up to 21% faster on average. (Brian White)
        nodejs/node#10874

    * IPC:
      - Batched writes have been enabled for process IPC on platforms that
        support Unix Domain Sockets. (Alexey Orlenko)
        nodejs/node#10677
      - Performance gains may be up to 40% for some workloads.

    * child_process:
      - `spawnSync` now returns a null `status` when child is terminated by
        a signal. (cjihrig) nodejs/node#11288
      - This fixes the behavior to act like `spawn()` does.

    * http:
      - Control characters are now always rejected when using
        `http.request()`. (Ben Noordhuis)
        nodejs/node#8923
      - Debug messages have been added for cases when headers contain
        invalid values. (Evan Lucas)
        nodejs/node#9195

    * node:
      - Heap statistics now support values larger than 4GB. (Ben Noordhuis)
        nodejs/node#10186

    * timers:
      - Timer callbacks now always maintain order when interacting with
        domain error handling. (John Barboza)
        nodejs/node#10522

    PR-URL: nodejs/node#11759

Signed-off-by: Ilkka Myller <ilkka.myller@nodefield.com>
@jordanhendricks jordanhendricks mentioned this pull request Nov 15, 2017
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