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querystring: improve unescapeBuffer performance #10837

Merged
merged 1 commit into from
Jan 25, 2017
Merged

querystring: improve unescapeBuffer performance #10837

merged 1 commit into from
Jan 25, 2017

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mscdex
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@mscdex mscdex commented Jan 16, 2017 •
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Results with included benchmark:

                                                                                                                                       improvement confidence      p.value
 querystring/querystring-unescapebuffer.js n=10000000 input="%20%21%22%23%24%25%26%27%28%29%2A%2B%2C%2D%2E%2F%30%31%32%33%34%35%36%37"     12.86 %        *** 5.432023e-29
 querystring/querystring-unescapebuffer.js n=10000000 input="there is nothing to unescape here"                                            18.04 %        *** 6.686024e-40
 querystring/querystring-unescapebuffer.js n=10000000 input="there%20are%20several%20spaces%20that%20need%20to%20be%20unescaped"           21.62 %        *** 1.254710e-42
 querystring/querystring-unescapebuffer.js n=10000000 input="there%2Qare%0-fake%escaped values in%%%%this%9Hstring"                         9.11 %        *** 1.738303e-14

CI: https://ci.nodejs.org/job/node-test-pull-request/5885/

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)
  • querystring

@mscdex mscdex added performance Issues and PRs related to the performance of Node.js. querystring Issues and PRs related to the built-in querystring module. labels Jan 16, 2017
@Fishrock123
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Didn't this like, used to use a mapping table like a year ago? haha

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mscdex commented Jan 16, 2017

@Fishrock123 Not that I'm aware of. stringify() still uses a (different) table though.

mscdex
mscdex commented Jan 16, 2017
View reviewed changes
lib/querystring.js
for (var inIndex = 0, outIndex = 0; inIndex <= s.length; inIndex++) {
var c = inIndex < s.length ? s.charCodeAt(inIndex) : NaN;
for (var inIndex = 0, outIndex = 0; ; inIndex++) {
if (inIndex < s.length) {
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Also, to anyone who might ask why I didn't put this conditional in the for conditional and the else block immediately after the end of the for loop, it's because there is actually a 2% reduction in the performance increase for the 'fake escaped values' input. The results for the other inputs seem to be largely unaffected though.

@mscdex mscdex force-pushed the querystring-unescapebuffer-perf branch from b854ebc to 0cf1054 Compare January 16, 2017 16:26
@mscdex mscdex force-pushed the querystring-unescapebuffer-perf branch from 0cf1054 to 568b353 Compare January 16, 2017 17:05
@mscdex mscdex force-pushed the querystring-unescapebuffer-perf branch from 568b353 to c3c619a Compare January 16, 2017 17:11
@mscdex
querystring: improve unescapeBuffer performance
3bdcbdb 
PR-URL: nodejs#10837
Reviewed-By: James M Snell <jasnell@gmail.com>
@mscdex mscdex force-pushed the querystring-unescapebuffer-perf branch from c3c619a to 3bdcbdb Compare January 25, 2017 07:23
@mscdex mscdex merged commit 3bdcbdb into nodejs:master Jan 25, 2017
@mscdex mscdex deleted the querystring-unescapebuffer-perf branch January 25, 2017 07:25
targos pushed a commit that referenced this pull request Jan 28, 2017
@mscdex @targos
querystring: improve unescapeBuffer performance
a594d18 
PR-URL: #10837
Reviewed-By: James M Snell <jasnell@gmail.com>
@italoacasas italoacasas mentioned this pull request Jan 29, 2017
Merged
italoacasas pushed a commit to italoacasas/node that referenced this pull request Jan 30, 2017
@mscdex @italoacasas
querystring: improve unescapeBuffer performance
97ff432 
PR-URL: nodejs#10837
Reviewed-By: James M Snell <jasnell@gmail.com>
italoacasas pushed a commit to italoacasas/node that referenced this pull request Jan 30, 2017
@mscdex @italoacasas
querystring: improve unescapeBuffer performance
99f9f57 
PR-URL: nodejs#10837
Reviewed-By: James M Snell <jasnell@gmail.com>
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jasnell commented Mar 8, 2017

This will need a backport PR to land on v4. Landed on v6

jasnell pushed a commit that referenced this pull request Mar 8, 2017
@mscdex @jasnell
querystring: improve unescapeBuffer performance
e84efde 
PR-URL: #10837
Reviewed-By: James M Snell <jasnell@gmail.com>
MylesBorins pushed a commit that referenced this pull request Mar 9, 2017
@mscdex @MylesBorins
querystring: improve unescapeBuffer performance
db45bf8 
PR-URL: #10837
Reviewed-By: James M Snell <jasnell@gmail.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>
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