Lisp Propulsion Laboratory log

Paolo Amoroso's weblog. Main interests: Lisp, astronomy (Moon), space exploration (Apollo and early manned programs)

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CPU usage of delivered McCLIM applications with CMUCL

Saturday, January 8, 2005

Due to the way multiprocessing on Linux is initialized with CMUCL, a McCLIM application may use over 95% of CPU time. This makes it trickier to deliver applications.

Edi Weitz suggested a way of solving the problem by programmatically initializing multiprocessing. This works, but, I have been said, at the possible cost of introducing a great deal of latency (e.g. unresponsive menus).

The possible additional latency is acceptable in the experiments I have done so far, at least on fast machines. But this is an issue it's worth watching. And it's also worth mentioning that SBCL doesn't have this problem.