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Re: Multiple Undo devours RAM

Thanks, Florent. I will consider your suggestion in my redesign, such
as more compact storage of data in my Undo stack. I will get into some
more specifics in the thread "Designing for multitudinous objects".

Bye...Erez

On 29-Jan-04, at 9:33 AM, Florent Pillet wrote:

> You are aware that Mac OS X uses virtual memory, right? So the
> difference between systematically going to the disk for storing
> undoable objects and storing them in RAM and having the system page
> the ram to the disk would probably be minimil from a performance
> standpoint.
>
> Have you tried an alternative scheme like compressing the data stored
> on the Undo stack?
>
> Florent
>
> On 28 janv. 04, at 16:05, Erez Anzel wrote:
>
>> UNDO STACK ON DISK: Instead of my large Undo stack entries going into
>> RAM, and then into virtual memory (i.e. disk) when RAM gets tight, I
>> propose the opposite as an option. I realize that this is complicated
>> by the fact that dumping items to a file means that pointers have to
>> be converted into something useful when the information is retrieved.
>> Assuming that the user does not Undo nearly as often as they perform
>> other tasks, I'd say that it's better to use RAM for more common
>> tasks, and write my Undo and Redo stacks directly to disk. The stacks
>> could easily grow to hundreds of megabytes. I'd love to see this as
>> an option in Cocoa; I'm not suggesting that I write it myself.
>>
> --
> Florent Pillet, Code Segment email@hidden
> Developer tools and end-user products for Palm OS & Mac OS X
> ICQ: 117292463 http://perso.wanadoo.fr/fpillet
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References: 
 >Multiple Undo devours RAM (From: Erez Anzel <email@hidden>)
 >Re: Multiple Undo devours RAM (From: Public Look <email@hidden>)
 >Re: Multiple Undo devours RAM (From: Erez Anzel <email@hidden>)
 >Re: Multiple Undo devours RAM (From: Florent Pillet <email@hidden>)



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