Antoine Pitrou wrote:
> Le dimanche 17 septembre 2006 à 23:16 +1000, Nick Coghlan a écrit :
>> Brett Cannon's sandboxing work (which aims to provide first-class support
>> for
>> multiple interpreters in the same process for security reasons) also seems
>> like a potentially fruitful approach to distributing processing to multiple
>> cores:
>> - use threads to perform blocking I/O in parallel
>
> OTOH, the Twisted approach avoids all the delicate synchronization
> issues that arise when using threads to perform concurrent IO tasks.
>
> Also, IO is by definition not CPU-intensive, so there is no point in
> distributing IO to multiple cores (and it could even cause a small
> decrease in performance because of inter-CPU communication overhead).
Yeah, I made a mistake. The distinction is whether or not the CPU-intensive
task is written in C/C++ or Python - threads already work fine for the former,
but something new is needed for the latter (either better IPC support or
better in-process multi-interpreter support that uses an interpreter-specific
lock for interpreter-specific data structures, reserving the GIL for shared
state).
Cheers,
Nick.
--
Nick Coghlan | [EMAIL PROTECTED] | Brisbane, Australia
---------------------------------------------------------------
http://www.boredomandlaziness.org
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