Multi-threaded Fastcgi Performance is Very Poort. But Why?

Hello ,

I read it from this email in the archive that multi-thread fastcgi
apps perform poorly.
http://www.fastcgi.com/archives/fastcgi-developers/2005-March/003662.html

In order to verify this, I also tried the threaded sample that comes with
fastcgi. It happens to me, too, that each request takes more than 3 seconds
while single threaded app is very fast (I didn't time it but very fast.)
I didn't even use ab to test it. Instead, I just have one single request
each time by refreshing IE window.

I thought maybe it was the mutex code. Then I commented out all mutex
code (for accept() and for accessing variables.) But the performance
didn't seem to improve at all.

I wonder why this is the case?

-- 
Best regards,
Jack

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