Hi there. First off, the slides are really great, even without the audio! So thanks a lot for making them available!

I do think I might've found a little typo in slide 26: the last bullet says "obj->free.next" but it should be "obj->as.free.next" because you need to access the "free" field of the union called "as" (like the code in slide 15).

Yes, that is definitely a typo. Good catch.

PDF: http://dl.dropbox.com/u/635/gc-export.pdf

You mention a "long life GC" patch but I haven't heard of that type of patch. Can you provide a link?

The patch is for 1.9, written by @nari3 and is available at http://www.narihiro.info/index.en.html

sheet 68; pardon me

our first hack at a rails3 patch is at http://gist.github.com/308003, but it needs some work before it can be committed back to rails3

Great, thanks for this. A question however: how to solve the leaks portrayed on sheet 78?

Will this talk be posted at some point? I love the slides even without the audio.

+1

Is this 1.9 or 1.8?

the slides about the GC implementation are relevant for 1.8 AND 1.9. the types may have changed slightly in 1.9, but the GC implementation is the same.

memprof and gdb.rb and bleak_house are all tools for 1.8, but memprof will support 1.9 soon.

thanks for reading!

1.8