The repo is here if anyone wants to take a look http://github.com/visionmedia/dm-forms/tree/master This is the first time I have had a memory error of any kind, heres the output message: forms ruby(7152,0xa041efa0) malloc: *** mmap(size=1073741824) failed (error code=12) *** error: can't allocate region *** set a breakpoint in malloc_error_break to debug ruby(7152,0xa041efa0) malloc: *** mmap(size=1073741824) failed (error code=12) *** error: can't allocate region *** set a breakpoint in malloc_error_break to debug ./examples/../lib/dm-forms/base.rb:21:in `<<': failed to allocate memory (NoMemoryError) from ./examples/../lib/dm-forms/base.rb:21:in `form' from ./examples/../lib/dm-forms/helpers.rb:19:in `form' from examples/benchmarks.rb:11 ... I did a ruby-prof test on that same file and got %self total self wait child calls name 79.15 4.50 4.50 0.00 0.00 174 String#+ 13.24 0.75 0.75 0.00 0.00 84 String#<< 2.23 5.41 0.13 0.00 5.29 21 DataMapper::Form::Helpers#form Looks REALLY odd to me ... when running more than 10-ish times it seems to cause this memory error so something is really wrong that I have done. Any suggestions? if you run 'rake benchmark' you will (probably) see what i mean, I have tried without benchmarking as well this still occurs so something stupid is going on. Thanks in advance
on 2009-02-26 05:18
on 2009-02-26 14:26
Ruby version? (ruby -v) Operating system and version? (uname -a) Source of Ruby package? (e.g. from distribution X, or compiled yourself)
on 2009-02-26 17:10
Brian Candler wrote: > Ruby version? (ruby -v) > Operating system and version? (uname -a) > Source of Ruby package? (e.g. from distribution X, or compiled yourself) right sorry, heres all that: ruby 1.8.6 (2008-03-03 patchlevel 114) [universal-darwin9.0] Darwin Macintosh.local 9.5.0 Darwin Kernel Version 9.5.0: Wed Sep 3 11:29:43 PDT 2008; root:xnu-1228.7.58~1/RELEASE_I386 i386 Its just 1.8.6 which was installed on the mac already
on 2009-02-26 20:59
OK, I'm not a Mac expert I'm afraid. ulimit -a would be the first thing I'd try, to see what process memory and stack limits have been set, if any. *** mmap(size=1073741824) failed (error code=12) looks like something is asking to allocate exactly 1GB of RAM, which seems fishy to me. Maybe it's been growing this space and has now hit 1GB. If your Ruby process really is chewing up this much RAM (monitor it using 'top' while it runs), you'll need to find out why. - building a data structure which is too big? - holding onto references longer than you need? - however there are some strange failure modes very occasionally (esp. with threads or continuations) where a phantom object reference remains in the stack area scanned by the GC, but is not really live. There have been some patches posted a while back which you could try.