[racket-dev] Memory consumption of Racket

BLOCK_CACHE IS enabled by default in 5.1.1.3.
#define MZ_USE_PLACES (the default as of 5.1.1.3) enables block cache 
(see top of gc2/vm.c file).

If you have a pre 5.1.1 version or have places disabled, then my block 
cache patch won't be of any help.

Kevin



On 04/23/2011 01:09 AM, Nevo wrote:
> hi Kevin:
>   Your patch seems requiring "USE_BLOCK_CACHE" to be enabled. Sorry 
> for my lack of knowledge into Racket's memory management component, 
> how can I safely enable that because I cannot find its reference in 
> configure or Makefile.in? Thanks!
>
> Nevo
>
> On 23 April 2011 14:27, Nevo <sakur.deagod at gmail.com 
> <mailto:sakur.deagod at gmail.com>> wrote:
>
>     hi Robby
>       Just back from out of town, sorry for the late reply.
>       No. This doesn't help at all, still got low-memory killing on my
>     ipad. Actually, my own test is all based on "#lang racket/base".
>     I'll try Kevin's patch to see any difference. I've also tried to
>     throttle the max_pages_in_heap to allow around 25MB pages to use,
>     it will soon throw "out of memory" exception and abort after a
>     couple of GC cycles.
>
>     Nevo
>
>
>     On 22 April 2011 19:08, Robby Findler <robby at eecs.northwestern.edu
>     <mailto:robby at eecs.northwestern.edu>> wrote:
>
>         This program:
>
>          #lang racket/base
>          (printf "hi\n")
>
>         uses a lot less memory than this one:
>
>          #lang racket
>          (printf "hi\n")
>
>         Does that help at all?
>
>         Robby
>
>         On Fri, Apr 22, 2011 at 12:09 AM, Nevo <sakur.deagod at gmail.com
>         <mailto:sakur.deagod at gmail.com>> wrote:
>         > hi
>         >   My attempt on porting Racket interpreter to iOS has been
>         for a while and
>         > I've been able to run interpreter on both iOS device as well
>         iOS simulator.
>         > Right now, it runs perfectly on iOS simulator, but lack of
>         satisfaction on
>         > device. The reason is for those devices like iPad/iPhone or
>         Android, the
>         > memory for standalone application is always constrained, and
>         even a single
>         > "hello world" evaluation would easily put the whole app
>         runtime to death,
>         > per my test. In particular, here I've got some commented out
>         "printf" code
>         > compiled in for newgc.c, and trying to load a simple "hello
>         world" racket
>         > file to evaluate results in more than 30MB memory in use
>         (reported by gc).
>         > This is nothing for a desktop, but will kill itself easily
>         in iOS which
>         > usually requires the average memory allocation will be less
>         than 20MB. So
>         > I'm asking if there's some known compiling or runtime
>         configuration which I
>         > may not know to reduce memory usage, at least keep average
>         allocation
>         > acceptable for those memory constrained devices. Thanks for
>         your suggests
>         > here!
>         > Nevo
>         > _________________________________________________
>         >  For list-related administrative tasks:
>         > http://lists.racket-lang.org/listinfo/dev
>         >
>
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.racket-lang.org/dev/archive/attachments/20110423/6d93f1c2/attachment-0001.html>