Hi, what is the reason that threads in Racket are so much bigger than in Gambit Scheme and take so much longer to create them? Is there possibly a way to come closer to Gambit performance or have threads in Gambit less functionality? In my little Racket test program below I get about 10kB per thread on my MacBook and creation takes about 100us per thread (Gambit claims to fit "millions of active threads in ~1GB and a creation time of 0.5us).
Marc Freely states in a talk from 2010 about Gambit http://www.iro.umontreal.ca/~gambit/Gambit-inside-out.pdf Green threads Preemptive scheduler with priorities Very lightweight and scalable Thread = descriptor (324 bytes) + continuation Thread creation/synchronization ~ 0.5 μs O(log N) enqueue/dequeue operations Supports millions of active threads (in ~ 1GB) Best, Berthold -- ----------------------------------------------------------------------- Berthold Bäuml -- Head of Autonomous Learning Robots Lab DLR, Robotics and Mechatronics Center (RMC) Münchner Str. 20, D-82234 Wessling Phone +49 8153 282489 http://www.robotic.de/Berthold.Baeuml ____________________ Racket Users list: http://lists.racket-lang.org/users
