<html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> 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: <blockquote cite="mid:BANLkTinMnc7A11=oNFisbF3Rnud3qf20kw@mail.gmail.com" type="cite">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 <div class="gmail_quote">On 23 April 2011 14:27, Nevo <<a moz-do-not-send="true" href="mailto:sakur.deagod@gmail.com">sakur.deagod@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> 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 <div> <div class="h5"> <div class="gmail_quote">On 22 April 2011 19:08, Robby Findler <<a moz-do-not-send="true" href="mailto:robby@eecs.northwestern.edu" target="_blank">robby@eecs.northwestern.edu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> 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 <div> <div> On Fri, Apr 22, 2011 at 12:09 AM, Nevo <<a moz-do-not-send="true" href="mailto:sakur.deagod@gmail.com" target="_blank">sakur.deagod@gmail.com</a>> 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 </div> </div> > _________________________________________________ >  For list-related administrative tasks: >  <a moz-do-not-send="true" href="http://lists.racket-lang.org/listinfo/dev" target="_blank">http://lists.racket-lang.org/listinfo/dev</a> > </blockquote> </div> </div> </div> </blockquote> </div> </blockquote> </body> </html>