Hi kiddies,
I just uploaded the 64 bit cygwin 1.7.18-18 package. About 4 weeks ago I ripped out ptmalloc3. The reason was ptmalloc3 always used mmap. Duplicating many mmaps at fork time is noticably less performant than duplicating the heap, so I thought ptmalloc3 is not useful for us. However, I investigated this again today, and it turned out that my assumption was based on some default settings, which I didn't quite understood at the time (dlmalloc has lots of intertwined settings). I now reinstantiated ptmalloc3 in the 64 bit branch again, this time with a tweak which lets ptmalloc3 prefer heap memory over mmap'ed memory. It seems to work nicely, at least a complete configure/make of lynx worked as designed. Ultimately we might switch to jemalloc(*) at one point, but for the time being, ptmalloc3 seems to be a nice compromise, given how much faster it is in a multi-threaded environment. So, please test. If you see that anything is reproducibly broken, just by updating from 1.7.18-17 to 1.7.18-18, please report it here. Thanks, Corinna (*) http://www.canonware.com/jemalloc/ -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
