OS/2, eCS & ArcaOS - Technical > Networking
Moved to UltraFibre 120 Mb/s but OS/2 chugs at 10 Mb/s...???
Andi B.:
--- Quote ---...OR using a utility under Windows or Linux to simplify getting the data you need...
--- End quote ---
Can you recommend a useful utility for that? I'm not very experienced with Linux but I've an Ubuntu installation on one of my systems which I can try.
I've some WinXP/7/10 notebooks too. Usually I avoid connecting them directly to my ADSL router. But if there is a good Win tool which gives me the proper values for my connection I'll use Win for this task. Thanks.
Ian Manners:
Hi Andy,
I used Wireshark.
I'm having a look at whats available via a link way up above at https://www.speedguide.net/analyzer.php
The links given under "Optimize Your Connection" seem to be quite good.
https://www.speedguide.net/articles/the-tcp-window-latency-and-the-bandwidth-delay-2678 is a good summary.
I will also throw in https://www.ibm.com/support/knowledgecenter/ssw_aix_72/performance/tcp_workload_tuning.html for more information though much of it is not relevant to OS/2.
There is a Windows based optimiser available here: https://www.speedguide.net/downloads.php
I have not tried this one but the rest of the information they give seems good so worth a try. I originally tried Wireshark under Windows 10, gave up and used Windows 7 were I got some good results.
maxwarp:
Ian, i'm sorry
so if i've a 100Megabit/sec FTTC i should set as RWINsize
1022208 (30-100 Mbit lines depending on latency. MSS * 44 * 2^4)
that of course with eCS/AOS is not possible since we have a max value is 246723
so you are saying that we can't have download faster than a 15Megabit/sec connection (i'm just guessing)
but it's not, since here i've 2 servers and on one i get downloads of about 6,9-7MegaBytes/sec
i'm now very very confused :)
Ian Manners:
Hi Massimo.
goto https://www.speedguide.net/analyzer.php
What does it say your "RWIN Scaling (RFC1323) = 2 bits (scale factor: 2^2=4)" is?
and what value does it give for "Unscaled TCP Receive Window"?
What you are looking for is a MULTIPLE that fits, the size of RWIN is not overly important for us. Ignore the bandwidth * delay product for now. If you are interested you can find more information on that by searching for RFC1323 and having a read.
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