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13:28:58
Bike
not getting anywhere with libunwind, so going back to debug info... debuginfo.lisp mentions "the fact that a source position info's filename is often irrelevant", which i don't understand
14:00:40
drmeister
Let's take another look at libunwind later today. Linking a library shouldn't be this difficult.
14:01:24
drmeister
I've figured out non-consing transfer of info from a C++ library to CL. Using adjustable strings with fill-pointers
14:08:25
drmeister
I've been experimenting with multithreaded programming and yesterday I tried batching jobs for the threads but that didn't improve the scaling - so now I'm looking at strategies to reduce consing. I want to write efficient multithreaded code going forward and this is an test case for how to do that.
14:27:46
drmeister
By reducing the consing using the approach above I dropped the time to analyze the 48GB of data from 30 min to 23 min.
14:41:43
drmeister
Bike: If I wanted to compile every dtree interpreter all at once - what would I do?
14:42:02
drmeister
Do we have a way of getting all the dtree interpreters? I can walk memory and find them if not.
14:44:32
Bike
i think what you'd want to do is call clos:compile-discriminating-function on whichever generic functions are concerning
14:46:17
drmeister
The difference between core::clos__interpret_dtree_program and [perf-215208.map] is what I figure is interpretation time?
14:46:36
Bike
well, i'd try compile-discriminating-function on whatever that in particular is and see how it goes
14:46:56
drmeister
When I build a snapshot - that's a good time to compile all the extant interpreters.
14:48:31
drmeister
I would add a facility to walk memory and gather up objects that match a pattern. At the very least a stamp.