[racket-dev] internal error during gc

From: Matthew Flatt (mflatt at cs.utah.edu)
Date: Tue Dec 30 15:26:40 EST 2014

I think the root of the problem is that `raco setup` gets anywhere
close to the 1 GB limit. Also, since the "images.scrbl" document
involves images, the problem may be related to using foreign libraries
when close to the memory limit (where the foreign library can't force a
Racket GC to recover from an allocation failure).

Rendering "images.scrbl" by itself peaks somewhere between 600 MB and
700 MB in a 64-bit build, so I wouldn't expect it to be anywhere close
to 1GB in 32-bit mode. Building within `raco setup` adds some extra
overhead, and there may be a leak or finalizer interaction that makes
`raco setup` carry along too much memory by the time it gets to

Of course, 700 MB is a lot of memory to build a 100-page manual. It
takes only 700 MB instead of many GB because I periodically hunt down
inefficiencies and leaks in an attempt to keep `raco setup` under
control. It's past time for another hunt.

At Tue, 30 Dec 2014 08:00:12 -0500, Philippe Meunier wrote:
> Juan Francisco Cantero Hurtado wrote:
> >Sincerely, I don't know if the bug is in racket or in openbsd.
> Okay...  Well, is anyone interested in trying to locate the cause of
> the problem?  I can recompile the GC with debugging options turned
> on, etc., if more information is needed, but I don't know how the GC's
> code actually works and I don't have the time to dive into that...
> Philippe
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