Re: [aspectj-users] AJDT and memory

[Andy Clement <andrew.clement@xxxxxxxxx>]

Hi Martin,

Unfortunately I've only seen limited feedback.  Emond has been
commenting on https://bugs.eclipse.org/bugs/show_bug.cgi?id=278496 and
I have addressed all the bugs with it that I am aware of, but I'm
still not going to make it the default mode for AspectJ/AJDT until I
get a few more positive results.  Backporting it to 3.4 would also
probably require a few users requesting it - maybe you can open a bug
to do the backport work and see how many votes it collects.

cheers,
Andy

On 1 October 2010 02:24, "Martin Keßler" <Martin.Kessler1@xxxxxx> wrote:
>
> Hello,
>
> is there any update/feedback regarding the memory consumption? Did it make a difference and is there a chance you might backport it to 3.4?
> We are using RSA and are really interested.
> Thanks,
> Martin
>
> -----Original Message-----
> From: aspectj-users-bounces@xxxxxxxxxxx [mailto:aspectj-users-bounces@xxxxxxxxxxx] On Behalf Of Andy Clement
> Sent: Freitag, 13. August 2010 16:49
> To: aspectj-users@xxxxxxxxxxx
> Subject: Re: [aspectj-users] AJDT and memory
>
> On 12 August 2010 01:02, Thomas Hofmann <email@xxxxxxxxxxxxxxxxx> wrote:
>> Is this available for Eclipse 3.4 as I am using RSA and as you might remeber have a quite large workspace? Currently I am using a max. heap size of 1300 MB. I would like to try the new options on this workspace.
>
> Backporting would be a large effort as AJDT and AspectJ are moving forward quite rapidly now we have a larger team.  If there was enough feedback that this made an amazing difference on 3.5/3.6, we might think about the backport.
>
> cheers
> Andy
>
>> -----Original Message-----
>> From: aspectj-users-bounces@xxxxxxxxxxx
>> [mailto:aspectj-users-bounces@xxxxxxxxxxx] On Behalf Of Andy Clement
>> Sent: Freitag, 6. August 2010 00:56
>> To: aspectj-users@xxxxxxxxxxx
>> Subject: [aspectj-users] AJDT and memory
>>
>> Hi,
>>
>> Under bug 278496 I've gradually been working on this, the idea is to reduce the memory used for compile-time weaving in AJDT, using something similar to the strategy I used to reduce memory for Loadtime weaving.
>>
>> The latest AJDT dev builds now include the first pass at these changes.  You need to 'turn them on' as I don't want them default until I get some feedback on whether they behave.
>>
>> To configure them, open your project properties, go to AspectJ compiler, then scroll down to the bottom of the options panel and in the 'other' section in the free form text field enter:
>>
>> -Xset:minimalModel=true,typeDemotion=true
>>
>> Then work as normal.  I'm interested in whether:
>> - you see a noticeable reduction in heap usage (maybe turn on the
>> eclipse heap status monitor under Window>Preferences>General)
>> - you see a change in performance.  With the more eager eviction model
>> these options employ, there may be more messing around to compile
>> stuff  (probably only noticeable on full builds)
>> - it breaks !
>>
>> thanks for any feedback,
>> Andy
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