> Also throwing a signal to get the ucontext is pretty a expensive way of
> getting it. But you folks know this already. [...]
as i've mentioned in the previous mail, 2.5.35+ kernels have a very fast
SIGSTOP/SIGCONT implementation, which change was done as part of this
project - a few orders faster than throwing/catching SIGUSR1 to every
single thread for example.
so right now we first need to get some results back about how big the GC
problem is with the new SIGSTOP/SIGCONT implementation. If it's still not
fast enough then we still have a number of options.
Ingo
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