Thanks for your time Daniel! I will remove UPLOAD_BUFFERSIZE tuning for use with 7.65.1. Yeah, I saw this topic when I was looking for the solution, but the latest summary it has is that “there’s no good solution” which kind of depressed me a little bit.
Can I investigate slowness using 7.65 (since it has same changes) or do I need to use 7.61 specifically? > On Jul 18, 2019, at 00:04, Daniel Jeliński via curl-library > <curl-library@cool.haxx.se> wrote: > > Taras, > Thanks for pointing that out. The function looks good. > > Buffer autotuning was only introduced in curl 7.61, so the app using > 7.57 will use the default (slow) buffer sizes. You shouldn't need to > set UPLOAD_BUFFERSIZE to get good upload speeds on 7.65.1. > > As for the connection timeout, it appears to be a well known problem > with FTP on slow connections with oversized buffers. I just found a 10 > year old message describing what looks like the same problem: > https://curl.haxx.se/mail/archive-2009-08/0060.html > > I checked your upload_failure log, specifically the connection logged > under T#12216. This connection appears to have ~100ms RTT, throughput > ~5KB per RTT (50KB/s), for which the default 16KB buffer looks like > overkill. In that environment sending the last ~700KB buffer would > take about 15 seconds; curl timed out after 10. So yes, this problem > was indeed caused by oversized UPLOAD_BUFFERSIZE. > > Back to slowness topic, can you reproduce the slow uploads using curl > binary version 7.61 or newer? > Regards, > Daniel > ------------------------------------------------------------------- > Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library > Etiquette: https://curl.haxx.se/mail/etiquette.html ------------------------------------------------------------------- Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library Etiquette: https://curl.haxx.se/mail/etiquette.html
