[gclist] Real-Time GC for high-level languages
Richard A. O'Keefe
Wed, 31 Jan 2001 15:06:09 +1300 (NZDT)
Andrew Cheadle wrote:
Apart from that I know that the Open-source Erlang provides only
soft real-time behaviour.
Erlang's limitation to "soft real-time" doesn't really have a lot to do
with garbage collection. Most garbage collections in Erlang are
thread-local. The basic problem is Erlang IPC:
- threads can communicate with threads on other nodes over a network,
so there are unpredictable network delays
- you can't tell the Erlang system everything it would need to know to
do hard real-time scheduling.
I believe that the time to fully collect a thread is less than typical
LAN network delays.