python's thread problem on Linux platform

[devdoer]

I found that multi-threaded program(io-centralize ) runs very slowly
on linux while the same program runs very quickly on windows.If I
change the thread number to one ,the program runs quickly on linux, in
fact the speed is quicker than the multi-threaded version .
It turns out that python's multi-thread support on linux has some
problems.Any comments?

 

[Irmen de Jong]

I found that multi-threaded program(io-centralize ) runs very slowly
on linux while the same program runs very quickly on windows.If I
change the thread number to one ,the program runs quickly on linux, in
fact the speed is quicker than the multi-threaded version .
It turns out that python's multi-thread support on linux has some
problems.Any comments?

Yes. There is a bug in your code.

--Irmen

 

[robert]

I found that multi-threaded program(io-centralize ) runs very slowly
on linux while the same program runs very quickly on windows.If I
change the thread number to one ,the program runs quickly on linux, in
fact the speed is quicker than the multi-threaded version .
It turns out that python's multi-thread support on linux has some
problems.Any comments?

You are probably looping or have other quirks', over-lock-ing ...

Python's thread/threading/Queue stuff is unfortunately Java-ish/
OS-mindset and not functional. Thus encourages screwing "ego threads".

Maybe you get things organized frictionless with those 2? :

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/491281
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/491280

-robert