On May 19, 6:18 pm, Yarko Tymciurak <[email protected]> wrote: > On May 19, 5:41 pm, amoygard <[email protected]> wrote: > .... > > So - in general, you do not start subprocesses - with the exception of > cron. Seehttp://www.web2py.com/book/default/section/4/17
I might better have said you do not _want_ to be starting subprocesses - besides the cost (compute time, memory, etc.), if you generally did this. This (the inneficiency of spawning subrocesses) is why stackless was created - and (among other things) used in a a very busy online game. A lot of thought went into avoiding the costs of spawning subprocesses. If you haven't heard of it, stackless is an implementation of python that does not use the traditional "C" stack for local variables, etc. Among other things, it has added "tasklets" to the language, so you can create and schedule tasks - without the overhead of doing so in your operating system. There is a lot of discussion of benefit, efficiency. Although there might be some discussion questioning the approach, other alternative approaches, one thing is clear: the motivation to stay away from creating threads / subprocesses, and the costs involved. it might be interesting to read up on it. - Yarko > > - Yarko >
