On Friday 07 February 2020 02:17:59 Andrei POPESCU wrote: > On Vi, 07 feb 20, 02:04:17, Gene Heskett wrote: > > Greetings all; > > > > My local network has 2 8 port switches, one here in this room that > > claims to be a gigabit and managed. > > > > One of its ports is connected to the upstream port of another dumber > > unmanaged 8 port switch that feeds the machines in the garage, and > > which also claims to be a gigahertz capable switch. > > > > But file moves to/from the machines in the garage seems to indicate > > theres a slow connection of around 10Mb/s someplace in that path. > > Considering the type of machines you have it could be a storage > limitation, i.e. you're not going to get Gbit speeds from USB2 > attached storage. > AO about 60 days back, no usb2 starage, only usb storage is SSD's on usb3 ports, they test at 600mbs+ or so using hdparm -tT. But on really big writes, the ssd's decay to around 17-20 mb/s.
> Check 'ethtool <network_device_name>' on each of those systems, > possibly one or more are connected at lower than 1Gbit. I just looked thru all the dmesg's and those that do report connect speeds are all at gigabit. > > > Do we have a utitity that for troubleshooting purposes, can take the > > address of one of those machines, and somewhat like traceroute, but > > report the bandwidth capability of every box in that path including > > this machine and target addresses abilities? > > You can test the bandwidth with iperf. Run the server on one system > and test from each of the other systems. I'll do that, many thanks. > Kind regards, > Andrei Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene>
