AW>> Out of curiosity Paolo could you elaborate on the nature of the bug

It was a truly functional mistake on my side. I was not aware that the server was sending back stuff that, in turn, curl_multi_fdset had to monitor.

That means, the first NULL pointer was sending curl_multi_fdset in seg-fault:

multiResult = curl_multi_fdset(multiSession, &fdread, NULL, NULL, &maxFD);

Trivially, this fixed everything:

multiResult = curl_multi_fdset(multiSession, &fdread, &fdwrite, NULL, &maxFD);

Thanks for asking.

From: paolopiace_at_hotmail.com
To: curl-library_at_cool.haxx.se
Subject: RE: curl_easy vs curl_multi - performance
Date: Mon, 13 Jun 2011 14:34:13 -0700

I want to report that I discovered a BUG in my code.

Everything is now back to normal and the performance of curl_multi is very much in line with sequential curl_easy

Everything works fine.

Thanks for listening.
                                               

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Received on 2011-06-14