diff options
author | Brian White <mscdex@mscdex.net> | 2016-05-31 13:03:59 -0400 |
---|---|---|
committer | Brian White <mscdex@mscdex.net> | 2016-06-14 15:15:34 -0400 |
commit | 686984696de00ce09ac1d56e997cf705ecb6377d (patch) | |
tree | 74b49d9ab32eb05b93e192e634ede1d5503985e4 /benchmark/streams/readable-readall.js | |
parent | c570182a39ada502d0f65223728b0cd9e136cda0 (diff) | |
download | android-node-v8-686984696de00ce09ac1d56e997cf705ecb6377d.tar.gz android-node-v8-686984696de00ce09ac1d56e997cf705ecb6377d.tar.bz2 android-node-v8-686984696de00ce09ac1d56e997cf705ecb6377d.zip |
stream: improve Readable.read() performance
read() performance is improved most by switching from an array to
a linked list for storing buffered data. However, other changes that
also contribute include: making some hot functions inlinable, faster
read() argument checking, and misc code rearrangement to avoid
unnecessary code execution.
PR-URL: https://github.com/nodejs/node/pull/7077
Reviewed-By: Calvin Metcalf <calvin.metcalf@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Diffstat (limited to 'benchmark/streams/readable-readall.js')
-rw-r--r-- | benchmark/streams/readable-readall.js | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/benchmark/streams/readable-readall.js b/benchmark/streams/readable-readall.js new file mode 100644 index 0000000000..07626fd797 --- /dev/null +++ b/benchmark/streams/readable-readall.js @@ -0,0 +1,32 @@ +'use strict'; + +const common = require('../common'); +const v8 = require('v8'); +const Readable = require('stream').Readable; + +const bench = common.createBenchmark(main, { + n: [50e2] +}); + +function main(conf) { + const n = +conf.n; + const b = new Buffer(32); + const s = new Readable(); + function noop() {} + s._read = noop; + + // Force optimization before starting the benchmark + s.push(b); + v8.setFlagsFromString('--allow_natives_syntax'); + eval('%OptimizeFunctionOnNextCall(s.read)'); + s.push(b); + while (s.read()); + + bench.start(); + for (var k = 0; k < n; ++k) { + for (var i = 0; i < 1e4; ++i) + s.push(b); + while (s.read()); + } + bench.end(n); +} |