[Info-vax] Memory Management (was Re: Running Alpha VMS under the ES40 emulator)

[Stephen Hoffman]

On 2013-10-14 21:27:17 +0000, JF Mezei said:

> On 13-10-14 11:37, Stephen Hoffman wrote:
> 
>> JF undoubtedly knows this, but closing a tab in various modern browsers 
>> frees the associated physical memory and also frees the underlying  
>> virtual memory.
> 
> Not the case for Firefox. Firefox may have a seperate process for 
> Flash, but that process lingers on once it has been started. And 
> closing a tab rearely sees actual RAM user lower on OS-X. But 
> definitely not 1 process per tab. (it may be done as threaded 
> architecture though).

Hence "various modern browsers", and not "all...".

Microsoft Internet Explorer 8 (IE8, MSIE8) 
<http://blogs.msdn.com/b/ie/archive/2008/03/11/ie8-and-loosely-coupled-ie-lcie.aspx>, 
WebKit2 browsers including recent Safari versions, Google 
Chrome/Chromium and probably some others are based on multiple-process 
designs.

Google's Chrome browser further integrates a sandboxed version of the 
Adobe Flash Player, and also uses certificate pinning.   Various other 
browsers do not.

As for your chosen Firefox web browser, see Mozilla's 
shelved-but-apparently-now-active-again Electrolysis (e10s) project 
discussions for further information.




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