[Stackless] pause execusion of tasklet using remove()
Andrew Francis
andrewfr_ice at yahoo.com
Fri Oct 13 21:47:33 CEST 2006
Hi Jim:
>Hi, I have a situation that 1,000,000 tasklets are
>making frequent calls to remote servers and waiting
>for reply. Each tasket is waiting for its own
>reply. These tasklets are also created and removed
>frequently.
[lines deleted]
>Please let me know I went to the wrong path because
>of misunderstanding.
I don't know if this helps you but some observations -
I am prototyping a WS-BPEL processor with Stackless
Python. So far things are going well. I have a similar
situation in that I have many tasklets (not a million
though) sending and processing web service requests. I
have the tasklets wait on channels. I also use Twisted
as the underlying networking framework.
>When looking at the remove() api, I saw the
following >warning message about it:
> remove(...)
> Removing a tasklet from the runnables queue.
> Note: If this tasklet has a non-trivial C stack
I found too much work needed to be done with insert()
and remove(). I suspect you have to give each tasklet
some mechanism to receive incoming replies (sounds
like you will be using a dictionary). In contrast,
channels seem to be cheap resourcewise (perhaps
Richard or Christian could comment on this) and easy
to use.
Cheers,
Andrew
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