delta/node-new.git/src/node_perf_common.h, branch pull-request-doc-updates

src: reduce includes of node_internals.h

2019-01-21T06:54:42+00:00

PR-URL: https://github.com/nodejs/node/pull/25507
Reviewed-By: Daniel Bevenius 
Reviewed-By: Ben Noordhuis 
Reviewed-By: Colin Ihrig 
Reviewed-By: Anna Henningsen 
Reviewed-By: James M Snell

perf_hooks: make GC tracking state per-Environment

2018-12-17T01:29:10+00:00

Otherwise this is global state that may be subject to race
conditions e.g. when running `perf_hooks` inside of Worker threads.

Tracking the GC type is removed entirely since the variable was unused.

PR-URL: https://github.com/nodejs/node/pull/25053
Reviewed-By: Colin Ihrig 
Reviewed-By: James M Snell

src: add missing `NODE_WANT_INTERNALS` guards

2018-08-28T14:54:07+00:00

We generally add these to all headers that are considered
internal to Node.

These aren’t distributed as part of the headers tarball,
so I think this does not have to be semver-major
(and we have been changing the APIs in these headers
freely anyway).

PR-URL: https://github.com/nodejs/node/pull/22514
Reviewed-By: James M Snell

perf_hooks: remove less useful bootstrap marks

2018-06-15T16:05:19+00:00

While `perf_hooks` is still in experimental, remove less useful
bootstrap milestones.

PR-URL: https://github.com/nodejs/node/pull/21247
Reviewed-By: Anna Henningsen 
Reviewed-By: Tiancheng "Timothy" Gu

perf_hooks,trace_events: emit perf milestone trace events

2018-03-16T17:54:05+00:00

Emit the perf_hooks node timing milestones as trace events.

PR-URL: https://github.com/nodejs/node/pull/19175
Reviewed-By: Anna Henningsen

perf_hooks: fix timing

2018-03-06T15:50:01+00:00

Fixes: https://github.com/nodejs/node/issues/17892
Fixes: https://github.com/nodejs/node/issues/17893
Fixes: https://github.com/nodejs/node/issues/18992

PR-URL: https://github.com/nodejs/node/pull/18993
Reviewed-By: James M Snell 
Reviewed-By: Anna Henningsen 
Reviewed-By: Colin Ihrig 
Reviewed-By: Anatoli Papirovski

http2,perf_hooks: perf state using AliasedBuffer

2018-01-25T01:29:45+00:00

Update performance_state to use AliasedBuffer and update usage sites.

PR-URL: https://github.com/nodejs/node/pull/18300
Reviewed-By: Anna Henningsen 
Reviewed-By: James M Snell

http2: perf_hooks integration

2018-01-02T16:56:30+00:00

Collect and report basic timing information about `Http2Session`
and `Http2Stream` instances.

PR-URL: https://github.com/nodejs/node/pull/17906
Refs: https://github.com/nodejs/node/issues/17746
Reviewed-By: Matteo Collina

src: fix build on certain platforms

2017-08-24T02:01:19+00:00

The `double` fields in `performance_state` could previously have
been aligned at 4-byte instead of 8-byte boundaries, which would
have made creating an Float64Array them as a array buffer view
for an ArrayBuffer extending over the entire struct an invalid
operation.

Ref: 67269fd7f33279699b1ae71225f3d738518c844c

Comments out related flaky failure

PR-URL: https://github.com/nodejs/node/pull/14996
Reviewed-By: James M Snell 
Reviewed-By: Refael Ackermann

perf_hooks: implementation of the perf timing API

2017-08-23T23:00:09+00:00

An initial implementation of the Performance Timing API for Node.js.
This is the same Performance Timing API implemented by modern browsers
with a number of Node.js specific properties. The User Timing mark()
and measure() APIs are implemented, garbage collection timing, and
node startup milestone timing.

```js
const { performance } = require('perf_hooks');

performance.mark('A');
setTimeout(() => {
  performance.mark('B');
  performance.measure('A to B', 'A', 'B');
  const entry = performance.getEntriesByName('A to B', 'measure')[0];
  console.log(entry.duration);
}, 10000);
```

The implementation is at the native layer and makes use of uv_hrtime().
This should enable *eventual* integration with things like Tracing
and Inspection.

The implementation is extensible and should allow us to add new
performance entry types as we go (e.g. for measuring i/o perf,
etc).

Documentation and a test are provided.

PR-URL: https://github.com/nodejs/node/pull/14680
Reviewed-By: Matteo Collina