On Mon, Sep 28, 2015 at 9:08 AM, Will Sewell
If it is the GC, then is there anything that can be done about it?
- Increase value of -A (the default is too small) -- best value for this
is L3 cache size of the chip
- Increase value of -H (total heap size) -- this will use more ram but
you'll run GC less often
- This will sound flip, but: generate less garbage. Frequency of GC runs
is proportional to the amount of garbage being produced, so if you can
lower mutator allocation rate then you will also increase net productivity.
Built-up thunks can transparently hide a lot of allocation so fire up the
profiler and tighten those up (there's an 80-20 rule here). Reuse output
buffers if you aren't already, etc.
G
--
Gregory Collins