[webkit-dev] WTF::fastMalloc

[Maciej Stachowiak]

On Oct 1, 2013, at 3:35 PM, Brent Fulgham <bfulgham at apple.com> wrote:

> So are you proposing to use the system allocator on Windows? Or would we keep using the existing FastMalloc implementation?
> 
> The current malloc logic has been the source of a number of mysterious crashes on Windows, so reverting to the system allocator might be a good thing for stability. I don’t know what the potential performance ramifications would be.

They would be bad. The default malloc on Windows is very slow.

 - Maciej

> 
> -Brent
> 
> On Oct 1, 2013, at 3:23 PM, Geoffrey Garen <ggaren at apple.com> wrote:
> 
>>> Apple's Windows port uses FastMalloc and the last measurements we took show it to be a large performance gain over the default Windows malloc implementation.
>> 
>> I believe those measurements were taken 5 Windows versions ago.
>> 
>>> While this port is only used by iTunes these days, we still would not want to regress its performance. Can the new allocator be made to work with Windows?
>> 
>> The set of porting tasks is the same set I outlined for GTK.
>> 
>> The Windows port is missing many performance features, including tiled scrolling, LLInt, parallel garbage collection, DFG, and FTL. Given those other major missing pieces, I don’t think this piece is worth the porting time.
>> 
>> Geoff
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