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Updated Contributed memory usage: benchmarks over time (markdown)

gorhill 2014-12-24 05:51:39 -08:00
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Contributed memory usage: benchmarks over time.md

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Just a place for me to keep track of contributed memory to web pages over time. Using [Acid Test 3](http://acid3.acidtests.org/), a very simple web page, with embedded `iframes`. Web page was opened in a new tab for each extension (important). Each extension tested alone, with no other extension enabled. Browser left on idle for more than 1 minute to ensure web page memory was garbage collected.
Just a place for me to keep track of contributed memory to web pages over time. Using [Acid Test 3](http://acid3.acidtests.org/), a very simple web page, with embedded `iframes`. Web page was opened in a new tab for each extension (important).
Each extension tested alone, with no other extension enabled. Browser left on idle for more than 1 minute to ensure web page memory was garbage collected.
The following steps were added for benchmarks dated December 2014 and later:
1. Click _"Stats for nerds"_ in _"Task Manager"_: _"About memory"_ opens
1. Wait a few seconds
1. Close the _"About memory"_ tab
1. Wait a few seconds
1. Repeat all above steps until the memory footprint of the Acid Test tab stops decreasing
I found this was now necessary as it appears Chromium's garbage collector has become rather lazy. The above steps forces it into action.
### 24 December 2014
- Chromium 39.0.2171.65 64-bit (Linux)
- µBlock v 0.8.2.2 (default lists: _EasyList_, _Peter Lowe’s Ad server_, _EasyPrivacy_, malware domain lists, _Fanboy’s Social Blocking List‎_)
- Adblock Plus 1.8.8 (_EasyList_, _EasyPrivacy_, _Malware Protection List_, _"Acceptable ads"_ disabled)
Summary of results:
- Reference memory usage for the web page: 23 MB
- Adblock Plus adds over 33 MB
- µBlock Plus adds over 10 MB
No extension (reference):<br>
![no extension](https://raw.githubusercontent.com/gorhill/uBlock/master/doc/benchmarks/mem-usage-in-page-20140919-none.png)
µBlock:<br>
![µBlock](https://raw.githubusercontent.com/gorhill/uBlock/master/doc/benchmarks/mem-usage-in-page-20140919-ublock.png)
Adblock Plus:<br>
![Adblock Plus](https://raw.githubusercontent.com/gorhill/uBlock/master/doc/benchmarks/mem-usage-in-page-20140919-abp.png)
### 19 September 2014