Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

> On Mar 13, 2016, at 10:06 AM, Phil Bouchard wrote: > > I just thought you might be interested in this benchmark. Please stop email this list until you provide benchmark results replacing JavaScriptCore’s GC. The benchmarks you are providing are irrelevant to

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

On 03/11/2016 09:56 PM, Phil Bouchard wrote: On 03/06/2016 10:57 PM, Phil Bouchard wrote: True but if block_ptr<> is 10x faster than the Mark & Sweep GC then I think we got something perhaps worth investigating. - For the record, now block_ptr<> is 600% times faster than shared_ptr<> so

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

On 03/06/2016 10:57 PM, Phil Bouchard wrote: True but if block_ptr<> is 10x faster than the Mark & Sweep GC then I think we got something perhaps worth investigating. - For the record, now block_ptr<> is 600% times faster than shared_ptr<> so it's a good start: new: auto_ptr:

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

On 03/06/2016 10:36 PM, Ryosuke Niwa wrote: No :( It's pretty relevant that GC in JavaScriptCore was written for JavaScriptCore. In particular, JSC doesn't focus on optimizing binary size, memory usage, etc... for embeddable devices so I would expect the performance characteristics to be

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

On Sun, Mar 6, 2016 at 7:28 PM, Phil Bouchard wrote: > On 03/06/2016 10:17 PM, Filip Pizlo wrote: >> >> >>> On Mar 6, 2016, at 6:36 PM, Phil Bouchard wrote: >>> >>> That should speed up my benchmarking process. >> >> >> It will also make your

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

I know, it wouldn't be worth integrating in that case but at least I have a way to compare. On 03/06/2016 10:30 PM, Filip Pizlo wrote: Phil, I think you need to do better than this. -Filip On Mar 6, 2016, at 7:28 PM, Phil Bouchard wrote: It is very subjective but

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

Phil, I think you need to do better than this. -Filip > On Mar 6, 2016, at 7:28 PM, Phil Bouchard wrote: > > On 03/06/2016 10:17 PM, Filip Pizlo wrote: >> >>> On Mar 6, 2016, at 6:36 PM, Phil Bouchard wrote: >>> >>> That should speed up my

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

On 03/06/2016 10:17 PM, Filip Pizlo wrote: On Mar 6, 2016, at 6:36 PM, Phil Bouchard wrote: That should speed up my benchmarking process. It will also make your benchmarking process inconclusive for the purpose of evaluating a memory manager’s performance relative to

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

> On Mar 6, 2016, at 6:36 PM, Phil Bouchard wrote: > > On 03/06/2016 12:59 AM, Phil Bouchard wrote: >> >> Anyway I am not sure if I can create a patch within a short period of >> time but if I happen to have an interesting Javascript benchmark then I >> will repost it to

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

On 03/06/2016 09:37 PM, Ryosuke Niwa wrote: FYI, XS6 is another popular JS engine for embedded devices: http://kinoma.com - R. Niwa Thanks. It looks like this one is written in Java... ___ webkit-dev mailing list webkit-dev@lists.webkit.org

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

FYI, XS6 is another popular JS engine for embedded devices: http://kinoma.com - R. Niwa On Sun, Mar 6, 2016 at 6:36 PM, Phil Bouchard wrote: > On 03/06/2016 12:59 AM, Phil Bouchard wrote: >> >> >> Anyway I am not sure if I can create a patch within a short period of >>

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

On 03/06/2016 12:59 AM, Phil Bouchard wrote: Anyway I am not sure if I can create a patch within a short period of time but if I happen to have an interesting Javascript benchmark then I will repost it to this mailing list. Hmmm... I just want to say there are embeddable JS engines out there:

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

Thanks for the references, I will take a look. But about performance, a GC is perhaps faster for a period of time but when the collector kicks in we notice a CPU usage spiking for a bit followed by a performance slowdown on some Javascript animation, specially on a embedded box with 1 or 2

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

Phil, I would expect our GC to be much faster than shared_ptr. This shouldn’t really be surprising; it’s the expected behavior according to the GC literature. High-level languages avoid the kind of eager reference counting that shared_ptr does because it’s too expensive. I would expect a

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

On 03/05/2016 01:02 AM, Phil Bouchard wrote: On 03/05/2016 12:49 AM, Filip Pizlo wrote: If you're right then you've resolved CS problems dating back to the 50's. Extraordinary claims require extraordinary evidence. You haven't provided any evidence. It wasn't easy to implement but it's done

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

On 03/05/2016 12:49 AM, Filip Pizlo wrote: If you're right then you've resolved CS problems dating back to the 50's. Extraordinary claims require extraordinary evidence. You haven't provided any evidence. It wasn't easy to implement but it's done now so we can all move forward. Replacing

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

> On Mar 4, 2016, at 9:33 PM, Phil Bouchard wrote: > >> On 03/05/2016 12:07 AM, Ryosuke Niwa wrote: >> Hi Phil, >> >> You made a similar post in December 2014: >> https://lists.webkit.org/pipermail/webkit-dev/2014-December/027113.html >> >> Are you suggesting you have

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

On 03/05/2016 12:07 AM, Ryosuke Niwa wrote: Hi Phil, You made a similar post in December 2014: https://lists.webkit.org/pipermail/webkit-dev/2014-December/027113.html Are you suggesting you have done or ready to do the following? I just completed the implementation of block_ptr<> but I am

Re: [webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

Hi Phil, You made a similar post in December 2014: https://lists.webkit.org/pipermail/webkit-dev/2014-December/027113.html Are you suggesting you have done or ready to do the following? > Let’s be clear, though: we’re unlikely to accept a patch in which all of our > JS object references are