Hm...I thought that discussion was actually about grep, but, nonetheless, it does seem increasingly likely that this is just a problem with diff.
Considering that I only want to know whether or not two files differ, this should not require any significant memory usage. (In other words, don't use mmap().) I guess I'll just write my own recursive comparison program. In theory I can just write it as if the platform were POSIX, right? That'd be sweet, and make it a million times easier for me. On Mon, Oct 26, 2009 at 1:26 PM, Christopher Faylor <cgf-use-the-mailinglist-ple...@cygwin.com> wrote: > On Mon, Oct 26, 2009 at 11:41:13AM -0400, Kenneth Chiu wrote: >>I'm trying to diff two large directories, recursively, and >>I'm getting this error: >> >> $ diff -rq B B2 >diff.out >> diff: memory exhausted >> >>I looked at this URL >> >> http://cygwin.com/cygwin-ug-net/setup-maxmem.html >> >>but it seemed out-of-date. There was no such key in the >>registry, and the options to the regtool were different from >>what the regtool man page says. >> >>Any suggestions on how to get rid of the memory >>exhaustion error? Is there a new key path that I should >>use for the heap_chunk_in_mb value? Is it possible >>that I'm simply bumping into a 2 GB limit for >>32-bit processes? (And if that is the case, >>is there a recommended way to go to 64-bit?) > > AFAIK, this is just a limitation of diff. You can get the same > error on linux. > > This was discussed in some detail in this list a few months ago. > > cgf > > -- > Problem reports: http://cygwin.com/problems.html > FAQ: http://cygwin.com/faq/ > Documentation: http://cygwin.com/docs.html > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > > -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
