Hey, I run "iperf -s" on the samba server and "iperf -c IP-ADDRESS -t 60" on another machine (linux or windows, tried both) while I simultaneously copy the files to a machine in the network using the windows file-explorer.
Only when iperf is running (with either protocols, TCP or UDP) the copying process gets way faster (from around 100 Kbit/s to 100 Mbit/s). It is indeed a very interesting effect, and i cant explain where it comes from. Thank you for any tip or idea. Am 18.07.20 um 22:48 schrieb Sascha Osdoba: > hi, > > please tell the command line to run iperf on server. > > regards > > 18.07.2020 20:09:54 tomas jupe via Iperf-users > <iperf-users@lists.sourceforge.net>: > > Thank you very much for your idea. > > At first it looked like a possible solution. The CPU-usage is > higher with iperf running (from ~6% to ~25%). > > But when i run "stress" to throttle up the cpu to 100%, the speed > of the copying process is not getting faster. > > Only with iperf running the files are copied faster... > > > So i am still searching for a solution. > > > Am 18.07.20 um 18:46 schrieb Vince Conroy: >> This might be a long shot, but maybe the cpu on one or both PCs >> is being throttled (reduced clock speed) because of a power >> setting and running iperf causes it to throttle up? >> >> On Sat, Jul 18, 2020, 9:18 AM tomas jupe via Iperf-users >> <iperf-users@lists.sourceforge.net >> <mailto:iperf-users@lists.sourceforge.net>> wrote: >> >> Hi all, >> >> >> My Samba server only copies files fast when iperf is also >> running >> simultaneously. >> >> >> I have a samba setup to access files from a Windows-PC. Sadly >> transferring files to it and from it is very slow. >> >> (The windows-pcs are part of a domain managed by the samba >> server) >> >> Especially when a large number of small files are copied the >> speed is >> very low. Large files are copied quite fast. >> >> But as soon as a start a speedtest with iperf from another >> machine to >> that samba server the speed of copying files from the samba >> server is >> way faster. >> >> As soon as iperf stops the speed of the file copy drops again. >> >> >> Does anyone has an idea why iperf is improving the speed of >> copying the >> files from a samba server? And what do i have to change in my >> network to >> keep the high speed. :) >> >> >> Any help is much appreciated. >> >> Thank you very much. >> >> >> >> >> >> >> >> >> _______________________________________________ >> Iperf-users mailing list >> Iperf-users@lists.sourceforge.net >> <mailto:Iperf-users@lists.sourceforge.net> >> https://lists.sourceforge.net/lists/listinfo/iperf-users >> >> Vince Conroy >> West Wave Technology >> 707.890.6620 > > > > _______________________________________________ > Iperf-users mailing list > Iperf-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/iperf-users
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