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Re: C-Ares+libcurl maximum concurrent DNS requests

From: Dan Fandrich <dan_at_coneharvesters.com>
Date: Fri, 12 Sep 2008 21:10:20 -0700

On Sat, Sep 13, 2008 at 03:12:18AM +0400, Max Ivanov wrote:
> I use curl_multi + libev for bulk parallel downloading. libcurl is
> compiled with c-ares support. I've found that 200 tasks do their job
> well, but 300 give me "Could not contact DNS servers" error. Does it
> related to my local BIND server perfomance or there are some
> artifacial restrictions hidden in numerous *.h files?

Could it be a system limit of some sort? Too many open sockets or something?
Does ulimit give any clues?

>>> Dan

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Received on 2008-09-13