History

Michael Lippautz 021f02b579 [object-stats] Add virtual types - JSObject: Record elements and properties - JSCollecton: Record table - Record global caches Bug: v8:7266 Change-Id: I16b2eb511bed3dc0fb6f7af0e7037c6d42f03885 Reviewed-on: https://chromium-review.googlesource.com/878326 Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#50766}		2018-01-22 15:37:59 +00:00
..
categories.js	[object-stats] Add virtual types	2018-01-22 15:37:59 +00:00
details-selection.html	[object-stats] CSV export and simple fixes	2018-01-18 08:41:23 +00:00
details-selection.js	[object-stats] Redo recording of non-existing instance types	2018-01-19 12:20:45 +00:00
global-timeline.html	[tools] V8 heap stats visualizer	2018-01-15 15:27:17 +00:00
global-timeline.js	[object-stats] Add histogram	2018-01-18 11:57:35 +00:00
histogram-viewer.html	[object-stats] Add overall counter to viewer	2018-01-22 09:28:33 +00:00
histogram-viewer.js	[object-stats] Add overall counter to viewer	2018-01-22 09:28:33 +00:00
index.html	[object-stats] Add histogram	2018-01-18 11:57:35 +00:00
README.md	[object-stats] Add reader for Chrome's trace file format	2018-01-16 14:30:59 +00:00
trace-file-reader.html	[tools] V8 heap stats visualizer	2018-01-15 15:27:17 +00:00
trace-file-reader.js	[object-stats] Redo recording of non-existing instance types	2018-01-19 12:20:45 +00:00

README.md

Heap Stats

Heap stats is a HTML-based tool for visualizing V8-internal object statistics. For example, the tool can be used to visualize how much heap memory is used for maintaining internal state versus actually allocated by the user.

The tool consumes log files produced by d8 (or Chromium) by passing --trace-gc-object-stats or a trace captured using Chrome's tracing infrastructure. Chrome trace files need to be unpacked before they can be used though.

Hosting requires a web server, e.g.:

cd tools/heap-stats
python -m SimpleHTTPServer 8000