[ruby-core:36931] [Ruby 1.9 - Feature #4614] [RFC/PATCH] thread_pthread.c: lower RUBY_STACK_MIN_LIMIT to 64K

Issue #4614 has been updated by Koichi Sasada.

Assignee set to Koichi Sasada

GC eats large stack size if there are nested object (deep nested array and so on).  I'm not sure but I think this is why we allocate 512KB for stack.

Any comments?

I think that Thread.new should accept stack size.
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Feature #4614: [RFC/PATCH] thread_pthread.c: lower RUBY_STACK_MIN_LIMIT to 64K
http://redmine.ruby-lang.org/issues/4614

Author: Eric Wong
Status: Open
Priority: Low
Assignee: Koichi Sasada
Category: core
Target version: 1.9.x


=begin
The patch (committed) for Issue #4568 made this change possible.

Lowering stack size allows users on memory-constrained 32-bit
machines to spawn more native threads (which are easier (IMHO)
to use than Fibers).

Setting RUBY_STACK_MIN_LIMIT to 48K seems to work even with
check, test-rubyspec, and benchmark-each targets.  However, I'm
keeping it at 64K since that is what Symbian uses, so maybe
there's some code paths that need 64K.

I started experiencing failures with the Ruby tests with 44K on
x86_64, so 44K is definitely not safe.  Much more effort would
be required to make Ruby work with smaller stacks than 48K.

Also pullable via git: git pull git://bogomips.org/ruby.git stack-reduce

=end



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