Python un-plugging the Interpreter

Steve Holden steve at
Fri Apr 20 00:36:14 CEST 2007

Jorgen Grahn wrote:
> On Thu, 19 Apr 2007 10:56:25 -0600, S.Mohideen <moin at> wrote:
>>  4) Acheive true parallelism and performance by getting rid of the 
>> middle-man Interpreter and GIL.
> Is the GIL really an artifact of the interpreter?
In so far as only the CPython interpreter has one, I'd have to say "yes" 
to this. It's used to make various operations trivially thread-safe, 
which allows large speed gains in the programming.

A long time ago Greg Stein produced a patch that removed the need for 
the GIL, but nobody seemed to want to pay the penalty it extracted in 
speed reduction, so it languished unadopted.

Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd
Skype: holdenweb
Recent Ramblings

More information about the Python-list mailing list