In order to comply with linting rules used in the rest of the code base,
eliminate redeclared variables. A conservative approach is used so as to
avoid unintentional performance issues (for example, as might be seen in
some situations when using `let` instead of `var`).
PR-URL: https://github.com/nodejs/node/pull/5773
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
In the hopes of soon having the benchmark code linted, this change
groups all the likely non-controversial lint-compliance changes such as
indentation, semi-colon usage, and single-vs.-double quotation marks.
Other lint rules may have subtle performance implications in the V8
currently shipped with Node.js. Those changes will require more careful
review and will be in a separate change.
PR-URL: https://github.com/nodejs/node/pull/5773
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Enabled no-self-assign rule in ESLint.
This required one change in a benchmark file. Changed a loop (that is
outside of the benchmark itself, so performance is not critical) from a
for loop that repeats a string to use String.prototype.repeat() instead.
While at it, took the opportunity to const-ify the benchmark file.
Also moved the "Strict" section in the .eslintrc to match where it is in
the ESLint documentation. Updated the link for Strict rules to point to
the ESLint website rather than the GitHub-hosted code.
PR-URL: https://github.com/nodejs/node/pull/5552
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: targos - Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
There is a benchmark for the class method `Buffer.compare()` but not for
the instance method `buf.compare()`. This adds that benchmark.
I used this to confirm a performance regression in an implementation I
was considering. While the implementation was a bust, it does seem like
the benchmark is worthwhile.
The benchmark is nearly identical to the existing `Buffer.compare()`
benchmark except, of course, that it calls `buf.compare()` instead.
PR-URL: https://github.com/nodejs/node/pull/5441
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Array#pop() is known to be faster than Array#shift().
To be exact, it's O(1) vs. O(n). In this case there's no difference
from which side of the "pool" array the object is retrieved,
so .pop() should be preferred.
PR-URL: https://github.com/nodejs/node/pull/2174
Reviewed-By: mscdex - Brian White <mscdex@mscdex.net>
Reviewed-By: jasnell - James M Snell <jasnell@gmail.com>
Reviewed-By: ofrobots - Ali Ijaz Sheikh <ofrobots@google.com>
Constant declaration for `net` is omitted in `idle_server.js`
Add a constant declaration for constant `net`
PR-URL: https://github.com/nodejs/node/pull/3950
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
These changes improve parse() performance from ~11-30% on all of
the existing querystring benchmarks.
PR-URL: https://github.com/nodejs/node/pull/4675
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
assert.deepEqual: when actual and expected are typed arrays,
wrap them in a new Buffer each to increase performance
significantly.
PR-URL: https://github.com/nodejs/node/pull/4330
Fixes: https://github.com/nodejs/node/issues/4294
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
When create Buffer from a Buffer will copy data
from old to new even though length is zero.
This patch can improve edge case 4x faster.
following is benchmark results.
new: buffers/buffer_zero.js n=1024: 2463.53891
old: buffers/buffer_zero.js n=1024: 618.70801
PR-URL: https://github.com/nodejs/node/pull/4326
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
The `util.format()` is used frequently, make the method faster
is better.
R-URL: https://github.com/nodejs/node/pull/3964
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
The CoC requests to avoid the casual use of profanity.
PR-URL: https://github.com/nodejs/node/pull/4122
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: targos - Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Adds the string search implementation from v8
which uses naive search if pattern length < 8
or to a specific badness then uses Boyer-Moore-Horspool
Added benchmark shows the expected improvements
Added option to use ucs2 encoding with Buffer::IndexOf
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/2539
Very minor update in benchmark/common.js
Not exactly a critical change, just continued cleaning
out of old joyent/node PRs that never landed.
Ref: https://github.com/nodejs/node-v0.x-archive/pull/8515
PR-URL: https://github.com/nodejs/node/pull/2399
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Brendan Ashworth <brendan.ashworth@me.com>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
This commit replaces instances of io.js with Node.js, based on the
recent convergence. There are some remaining instances of io.js,
related to build and the installer.
Fixes: https://github.com/nodejs/node/issues/2361
PR-URL: https://github.com/nodejs/node/pull/2367
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: João Reis <reis@janeasystems.com>
As per the discussion in #734, this patch deprecates the usage of
`EventEmitter.listenerCount` static function in the docs, and introduces
the `listenerCount` function in the prototype of `EventEmitter` itself.
PR-URL: https://github.com/nodejs/node/pull/2349
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
As a follow-up to 0d15161, this commit adds benchmarks for the rest
of the path functions and also forces V8 to optimize the functions
before starting the benchmark test.
PR-URL: https://github.com/nodejs/io.js/pull/2103
Reviewed-By: Brendan Ashworth <brendan.ashworth@me.com>
Make the inner loop execute fewer compare-and-branch executions per
processed byte, resulting in a 50% or more speedup.
This coincidentally fixes an out-of-bounds read:
while (unbase64(*src) < 0 && src < srcEnd)
Should have read:
while (src < srcEnd && unbase64(*src) < 0)
But this commit removes the offending code altogether.
Fixes: https://github.com/nodejs/io.js/issues/2166
PR-URL: https://github.com/nodejs/io.js/pull/2193
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
In http_bench.js, allow the concurrent requests per client
to be configurable.
This also changes the launch of clients to wait until all
forked servers are online. This eliminates spurious error
messages at the start of the run.
PR-URL: https://github.com/nodejs/io.js/pull/2068
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Break up Buffer#toString() into a fast and slow path. The fast path
optimizes for zero-length buffers and no-arg method invocation.
The speedup for zero-length buffers is a satisfying 700%. The no-arg
toString() operation gets faster by about 13% for a one-byte buffer.
This change exploits the fact that most Buffer#toString() calls are
plain no-arg method calls. Rewriting the method to take no arguments
means a call doesn't go through an ArgumentsAdaptorTrampoline stack
frame in the common case.
PR-URL: https://github.com/nodejs/io.js/pull/2027
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Christian Tellnes <christian@tellnes.no>
Reviewed-By: Daniel Cousens <email@dcousens.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Buffer.byteLength is important for speed because it is called whenever a
new Buffer is created from a string.
This commit optimizes Buffer.byteLength execution by:
- moving base64 length calculation into JS-land, which is now much
faster
- remove redundant code and streamline the UTF8 length calculation
It also adds a benchmark and better tests.
PR-URL: https://github.com/nodejs/io.js/pull/1713
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
This commit uses separate functions to isolate deopts caused by
try-catches and avoids fn.apply() for callbacks with small numbers
of arguments.
These changes improve performance by ~1-40% in the various
nextTick benchmarks.
PR-URL: https://github.com/iojs/io.js/pull/1571
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
When running a non-http benchmark, there is no need the check for the
wrk tool so move the wrk check into the http method.
PR-URL: https://github.com/iojs/io.js/pull/1368
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
This commit fixes a few things for this benchmark:
1. Ensures the temporary directory for the unix socket exists.
2. Prevents the client code from being run directly because the
server script is the one that calls out the client code.
3. Ensures the server is closed once the client benchmarks have
finished.
4. Since this is an http benchmark, it should be moved to the http
benchmarks subdirectory.
PR-URL: https://github.com/iojs/io.js/pull/1257
Reviewed-By: Roman Reiss <me@silverwind.io>
By limiting property getting/setting to only where they are
absolutely necessary, we can achieve greater performance
especially with small utf8 inputs and any size base64 inputs.
PR-URL: https://github.com/iojs/io.js/pull/1209
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Nicu Micleușanu <micnic90@gmail.com>
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
This commit adds an `OUTPUT_FORMAT` environment variable option for
all benchmark tests that allow either 'csv' or 'default' output. Default
output has been left unchanged, and csv output prints out the csv
headers along with the csv formatted per-test output, each test also
seperated by a newline.
It can be used like the following:
$ OUTPUT_FORMAT=csv iojs benchmark/common.js http
Not specifying the OUTPUT_FORMAT env var will default to 'default'.
Specifying a bad value will throw an error.
PR-URL: https://github.com/iojs/io.js/pull/777
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
This commit adds a graphing script (in R) for graphing the CSV output
of a benchmark. It can be run like this:
```
$ OUTPUT_FORMAT=csv iojs benchmark/http/client-request-body.js >
data.csv
$ ./benchmark/plot_csv.R data.csv graph.png bytes type
```
This will graph the output to `graph.png`, using the output's `bytes`
value as X and the result value for each as Y. Output will be grouped
by `type`.
Running as the example yields a beautiful graph like this:
http://pbrd.co/1vBhUfy.
PR-URL: https://github.com/iojs/io.js/pull/777
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
wrk is an optional tool that some of the http benchmarks uses. The removal
doesn't affect any users. Developers are assumed to install it before running
the tests.
This change reduces the tarball by 5%
PR-URL: https://github.com/iojs/io.js/pull/982
Reviewed-By: Rod Vagg <rod@vagg.org>
Benchmarker should pass exec flags (e.g. --no-crankshaft,
--turbofan-filter, --trace-opt etc) to the benchmarking process
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
PR-URL: https://github.com/iojs/io.js/pull/928
Some of the benchmarks that were added in commit 847b9d2 complete too
quickly to draw meaningful conclusions from. Increase the number of
iterations to make them run longer.
PR-URL: https://github.com/iojs/io.js/pull/746
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Before this commit, only benchmark targets defined in Makefile could
be used. This commit allows execution of common.js directly and
passing of filter arguments directly, allowing you to run either a
subset of benchmarks or a single specific benchmark for comparison.
PR-URL: https://github.com/iojs/io.js/pull/711
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
When running benchmark/compare.js, it is typical to run a version of
node that does not support template strings. This provides backwards
compatibility for comparing benchmarks using older versions of node.
PR-URL: https://github.com/iojs/io.js/pull/714
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
This commit cleans up `benchmark/common.js` with a few generic changes
such as the following:
- declare all `require()`'d libraries at the top instead of in the
middle
- add some empty whitespace where it helps readability
- changes ambiguous variable names
- standardizes most if / else blocks
- missing semicolons
PR-URL: https://github.com/iojs/io.js/pull/662
Reviewed-By: Nicu Micleușanu <micnic90@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
This commit removes the benchmark spacing modification in
`client-request-body.js` and `end-vs-write-end.js` which adds two spaces
to the end of some variables to make sure the lines line up.
The reason behind this is that its totally pointless (the lines don't
actually line up with it) and it disallows you to parse the output with
a tool like awk, or at least makes it a lot harder.
PR-URL: https://github.com/iojs/io.js/pull/650
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Rich Trott
Anton Khlynovskiy
Matteo Collina
Minwoo Jung
Brian White
Claudio Rodriguez
Jackson Tian
Myles Borins
Karl Skomski
Dmitry Vasilyev
Michaël Zasso
cjihrig
Sakthipriyan Vairamani
Nathan Woltman
Ben Noordhuis
Jeremiah Senkpiel
Brendan Ashworth
Jackson Tian
Shigeki Ohtsu
Rudi Cilibrasi
Johan Bergström
Petka Antonov
Evan Lucas