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Posted by qwertycat on 09/29/07 19:32
On Sep 29, 7:51 pm, Jerry Stuckle <jstuck...@attglobal.net> wrote:
> Just wondering - why do you need to fork processes, anyway? There's a
> lot of overhead in doing it, and if they're all CPU bound anyway you
> aren't going to gain anything (unless you have a potload of CPU's).
>
> Forking is good if you have different processes using different
> resources. But when they have to contend for the same resource,
> performance often goes down.
Instead of writing a PHP script that downloads 2 million headers from
a newsgroup in a single connection (which will cause PHP to crash
anyway as it'll reach 500MB+ memory usage), I thought it would be
better to launch 4 processes do download it in chunks of 50,000
headers - with 4 connections to the same NNTP server.
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