OS/2, eCS & ArcaOS - Technical > Networking
Moved to UltraFibre 120 Mb/s but OS/2 chugs at 10 Mb/s...???
David McKenna:
Finally had a chance to try this out again. I installed the R8169.OS2 driver and it worked, but still showed a max RWIN of 65536 at speedguide.net. Also replaced the Realtek NIC with an Intel PCIe Gigabit NIC, but it too showed a max RWIN of 65536. So it seems there is some software at work throttling this? Or could it be wiring? Can the motherboard control this? Next I need to swap around the cables on the switch....
Dave Yeo:
Guessing, could be wiring, could be your switch or even upstream.
Here I'm using LTE to connect and my numbers are really limited, RWIN seems to be stuck at 45056, MSS 1370 (changed to 536 after I changed MTU) and weirdest is MTU, 1410 usually but I just did a "ifconfig lan0 mtu 576" and now its stuck at 576 no matter if I try setting it to 1500, 1410, 1200, 600. Didn't try lower.
Here it is likely a limit of using LTE but could be the hub, which I'm cabled to. Hmm, trying on my phone (WiFi) gives the same default numbers (before I played with MTU on the desktop) as I had. Also mentions that Chrome can change the numbers independently of the OS on sockets it creates on some OSes.
Remy:
Hi,
Using a new gigabit rj45 cable, my interface only show 100Mbps while it is Gigabit !
Tried MMRE as well as R8189
Some interesting test with nperf compared to windows:
under windows; nperf gives a flat stable 192Mbps (My provider limiting it to 200Mbps)
under ArcaOs (MMRE or R8189), the nperfs gives me a flutuation between 135Mbps and 45Mbps and never could get the same flat stable result as I have under windows. Any suggestion ? Is it a tcp/ip or driver buffer limitation ?
Cheers
Doug Bissett:
--- Quote ---Using a new gigabit rj45 cable, my interface only show 100Mbps while it is Gigabit !
--- End quote ---
How are you measuring that? There is a long standing bug (probably a "feature", by now) in NETSTAT that shows gigabit speed as being 100 Mbs, when it is really 1000 Mbs.
Remy:
--- Quote from: Doug Bissett on September 24, 2019, 04:54:32 pm ---
--- Quote ---Using a new gigabit rj45 cable, my interface only show 100Mbps while it is Gigabit !
--- End quote ---
How are you measuring that? There is a long standing bug (probably a "feature", by now) in NETSTAT that shows gigabit speed as being 100 Mbs, when it is really 1000 Mbs.
--- End quote ---
netstat -n
This may be possible (thanks for the info) but the problem about throuput going from 45 to 135mbps is not normal. Under windows, I have a very stable 192mbps throuput during the test time (nperf) each time. (with or without IJFW, the fluctuation is the same and changing the driver, not working better.... tcp/ip ?
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