12.10.2011, 09:37, "Vladimir Grishchenko" <vladgri_at_hotmail.com>:
> It is a long shot, but did you check if libcurl's own download speed value matches your calculations? See curl_easy_getinfo()/CURLINFO_SPEED_DOWNLOAD.

Did check that. Thanks for pointing me to a very useful function!
For most pages my calculation yields the same result as CURLINFO_SPEED_DOWNLOAD gives me (30-150 KB/s on not-so-huge pages), but there is discrepancy with http://www.math.utah.edu/~pa/math/largeprime.html: I calculate 4 KB/s (yes, I can't seem to get 40 KB/s like I had before, no matter how I compile libcurl), whereas CURLINFO_SPEED_DOWNLOAD shows 35 KB/s.

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Received on 2011-10-12