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Re: Question on CURLINFO_SPEED_DOWN/UPLOAD when paused/resumed
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From: Daniel Stenberg via curl-library <curl-library_at_cool.haxx.se>
Date: Thu, 12 Aug 2021 15:11:47 +0200 (CEST)
On Fri, 6 Aug 2021, Joshua Harlow via curl-library wrote:
> When pausing and resuming I was noticing that CURLINFO_SPEED_UPLOAD and
> CURLINFO_SPEED_DOWNLOAD and its counters/timers don't seem to reset (which
> may just be how it is) and from looking at the progress.c code I think this
> is what is happening. So if a long pause happens, then the speed
> counters/timers may not actually take into account the fact that the
> transfer was paused for quite some time which then would produce a not
> exactly valid upload or download speed.
>
> Is this the expected behavior when pause/resume is used?
Yes, it is expected. There's no logic that deducts the paused time, so you get
the transfer size divided by the total time used, including all the paused
time.
Date: Thu, 12 Aug 2021 15:11:47 +0200 (CEST)
On Fri, 6 Aug 2021, Joshua Harlow via curl-library wrote:
> When pausing and resuming I was noticing that CURLINFO_SPEED_UPLOAD and
> CURLINFO_SPEED_DOWNLOAD and its counters/timers don't seem to reset (which
> may just be how it is) and from looking at the progress.c code I think this
> is what is happening. So if a long pause happens, then the speed
> counters/timers may not actually take into account the fact that the
> transfer was paused for quite some time which then would produce a not
> exactly valid upload or download speed.
>
> Is this the expected behavior when pause/resume is used?
Yes, it is expected. There's no logic that deducts the paused time, so you get
the transfer size divided by the total time used, including all the paused
time.
-- / daniel.haxx.se | Commercial curl support up to 24x7 is available! | Private help, bug fixes, support, ports, new features | https://curl.se/support.html ------------------------------------------------------------------- Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library Etiquette: https://curl.se/mail/etiquette.htmlReceived on 2021-08-12