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Messages - Roderick Klein

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You can give a try to this "speedtest' too

I get very low upload of only 2 megabit. That said I have no clue where this server is located. Also take into account that you also need to know where your download test server is located on the globe. In this case the I use is about 20 KM away. So does test resulsts do not say me anything.

Do they have local server around the globe or just one server ?
Running an IP trace I get 18 hopes... I get send over to Texas to the IP adress
But this is not even the end of the trace route. Anyay for a European user a pretty bad example to use for speedtest in my opinion.

I did new tests... (use of DHCP in both test from default install)

Booting ArcaOS disk -> speed test nearly 10Mbps

I then did a test installing ArcaOS into Virtualbox (using default "NAT mode" Virtualbox network driver then the native installation one without virtualbox) under windows 7 -> speed test gives nearly 58Mbps !!

For me it looks the native driver used with my onboard network card (RealtekĀ® 8111G Gigabit LAN) is not well working and is the culprit of bad speed. The driver has to be corrected and is buggy and this test confirms other tests I already did. 

But how do you know this is NOT the IP stack of OS/2 ?

* With my Intel E1000B.OS2 driver I get about 25 megabyte per second over my local LAN to a Linux server.

* indicates a 100 megabit and 67 megabit upload speed via the internet.

* I have a website I only get 350 KB per second from. Windows delivers 6.4 megabyte per second to the same website. Now here in the interesting, I repeated the test and hooked up a ethernet  to wifi adapter and setup my mobile phone as wifi hotspot to connect to the same website. Guess what its faster then 350 KB second!
So purely changing the data path shows the issue can also have todo with the IP stack somehow. Tracing that is part 2!

I am currently looking at IP trace and wireshark to see if something is going wrong with packet processing!
Like re-transmits or packets out of sync.

Setup & Installation / Re: bus master error
« on: July 11, 2018, 09:50:03 pm »
Well what is more imporant about your boot screen is kind of dead give away. The IDE driver is extremely outdated and the advise to use danis506.add/danatapi.flt is correct. What you see is that the CD player its controller is supported but the hard disc controllr is not. Try the danis506.add and daniatapi.flt as suggested.

Roderick Klein

Events / Re: Announcing Warpstock Europe 2019!
« on: July 08, 2018, 09:10:48 pm »
Sigurd, sorry for the misunderstanding I typed it to fast. All I was trying to point is that Warpstock Europe has alwasys costed per day around 25 to 30 Euro.  I was not trying to compare it your event.

And the only thing I compared to the event in Cologne is that the lunch is 7 Euro in the youth hostel. You can not get that much cheaper. That was all.

Your event is different in the sense that is takes place at the same location. I organize the event in the spring so its not in the way somehow interfere with your event or Warpstock US.

I wish I could BTW give people free access to Warpstock Europe, but that is to expensive  I try to organize the event around in the Netherlands or Germany.  Moving the event around makes it less cheap. A youth hostel is possibly one of the most cheapest locations you could organize the event. On average the cost is between 2000 and 2400 Euro for two days... Also more and more event locations they force a lunch into the package.  Infact the location for 2019 is a Youth Hostel.

We also publish what Warpstock Europe costs which is also BTW just 100% volenteer work.
Here you can see the year reports: If you want I can publish the orginal invoices from the hotels as well. This year it cost me 700 Euro in total to travel to Berlin and book a little appartment. The cost where not paid by VOICE of course.  Even the stamps and phone cost for VOICE I pay out of my own pocket.

That you find it to expensive I respect that.


Events / Re: Announcing Warpstock Europe 2019!
« on: July 02, 2018, 12:42:02 am »
Of course and sadly that 105 Dollars is only for access but lunch is included both days. Dinner is not included, more information will follow later. Roderick

Thanks for the Information, but this is to expensive for me. All the best and good luck!

Uhuu well previous Warpstocks where between 25 and 30 Euro's per year.

The 105 Dollars translates to 89 Euro's. It includes lunch twice.
How much is that in Cologne in the Youth Hostel ? I forgot ? 7 Euro ?
It includes tea and coffee the whole day.

Also the rent of the room is more expensive on Saturday since I renting it for the evening as well. So people can stick around if they want...

So for 45 Euro a day. If you would look at your travel expenses from Germany if you would come and stay at a youth hostel or Hotel. I consider the cost small compared to the rest of the travel cost.

But that is just my 1 cent :-)


Applications / Re: OS/4 (technical details only)
« on: July 01, 2018, 11:57:26 pm »
Well that driver as far as I can tell does not provide all the support that the ACPI.PSD provices.

Applications / Re: OS/4 (technical details only)
« on: July 01, 2018, 10:48:31 pm »
No. to the best of my understanding you can not install the OS/4 kernel with the current versions of ACPI.

Best regards,

Roderick Klein

Events / Re: Announcing Warpstock Europe 2019!
« on: June 29, 2018, 10:48:09 pm »
You can read some of the reasons here
May be its me, but I can't find "reasons" why it has to be so early.

Well in an edit that dropped out it has been reinserted:

The event will be organized at the Stay Okay Soest on the 18th and 19th
of May 2019. Access for Saturday and Sunday costs 105 Dollars. This is a
discounted rate until the 31st of July 2018! Normal price is 120 Dollars.
Your sure about the amount? Look like the rate for a four person room. Could not book on the hostel site because the date is not accepted as booking date. Seems to be to far ahead.

As it turns out they still did not add the rooms for next year...

Events / Re: Announcing Warpstock Europe 2019!
« on: June 29, 2018, 09:48:02 pm »
Is food and hotel (overnight)included in this price or is this "only" for the organization? It is very unlikely that I will have time to attend (May is allways full of work), but in case I could I would like to estimate the full costs for it Thanks.

Read the link ?
I did not want to make the annouchment text to long.

Of course and sadly that 105 Dollars is only for access but lunch is included both days. Dinner is not included, more information will follow later.



1) various test servers will be impacted by your local tcpip stack settings, for example, take the SACK I mentioned in my response to Roderick, I did shut it off right now to test it out, the immediate impact => DIES!!! I get a burst of full speed for about 2-3 secs then the traffic completely stops...judging by this result alone I would be inclined to say that having SACK OFF is a mistake...yet hitting several of the other test servers shows no impact, so your results will vary

The advise is based on the first download server that Mensys ever put online for downloads for eCS. I managed 4 servers running OS/2 in a large datacenter with 100 megabit uplink. And with a lot of traffic you could get the TCP/IP stack to get exhaust the system its memory in about 30 minutes by switching SACK on. There is clearly a bug in the stack! Hence the comment on the inetcfg.ini of eCS to *never* turn it on.


Hi Ian!

First of all, big Thank You for putting me on the right path here. The results so far are great, let me explain step at a time below...

Manual MTU value depends on what your fibre is using but you are using mtudiscover for MTU so its fine.

You would normally use 1500 for PPPoA, 1492 for PPPoE but it's really depending on your provider. Some will only accept 1492 for PPPoA and 1452 for PPPoE as your on fibre I would expect you to use 1500 and then let mtudiscover look after it. I have no idea if your provider allows jumbo packets or not, I don't even know if OS/2 supports MTU values above 1500 either but normally smaller is better than larger, up to a point...

I re-set the value to 1500 in my \mptn\bin\setup.cmd. My old ISP which utilized PPPoE over DSL line specifically requested 1452, the new guys...well, I did not get any info because the tech doing the install was very tight lipped..LOL, he specifically asked me to call their tech line instead.

If you have created an inetcfg.ini file in your x:\mptn\etc directory.

Note you should change your keepalive and sack values to reflect what is below as well.

Why do you suggest that SACK be off? I am basiing this on my understanding of that flag...the following article does a pretty nice job of explaining it's functionality => In short, if both the client and server support this, when an actual packet is dropped this will allow the re-transmission of ONLY the dropped data, as opposed to a full payload from the dropped point onwards until the end of the conversation. If successful this implies less data being re-sent.

Regarding the keepalive, I will change it to sync it up with my primary tcpip apps, that being Firefox and Privoxy. Specifically:

1) network.tcp.keepalive.idle_time 600

Beyond the above, what remains is to play with the sizes of the values for these key parameters you list below:

The main values you want to play with are:-

So far here are the results for the following settings:
tcpswinsize     131072
tcprwinsize     131072
udpswinsize     41600
udprwinsize     41600

My FF based downloads are now moving at a speedy 50 Mb/s, a HUGE improvement from where I started!!!

Various internet connection speed test report a steady 90-95 Mb/s rates, this is substantially better as well.

If you want to see your machine go down quicker, do turn on SACK. We experimented with this setting at Mensys on some servers and as somebody else already reported, stay far clear from switching it on. It will cause more pain then its worth...


Ian and Remy,

Guys, another update...I thought I would max out the settings with the goal of achieving highest performance...then if I start running into problems I would dial things back a step at a time.

So here are my current applicable INETCFG.INI settings:


keepalive       300     300     0       7800    KeepAlive (sec)
tcpswinsize     246723  32768   1024    246723  TCP SendWindow Size
tcprwinsize     246723  32768   1024    246723  TCP RecvWindow Size
udpswinsize     246723  41600   1024    246723  UDP SendWindow Size
udprwinsize     246723  41600   1024    246723  UDP RecvWindow Size
lingertime      120     120     0       65535   Linger Time (sec)
ipforward       0       0       0       1       IP Forwarding flag ON/OFF
timestmp        0       0       0       1       TCP TimeStamps ON/OFF
msl             30      30      1       16384   TCP MaxSegLifeTime (sec)
sack            1       0       0       1       Selective ACK ON/OFF

...the xxxwindsize have been set to MAX values.

I still need to research a bit to understand the impact of the following:

timestamp (I think this may be used by SACK, not sure though)

....and drummroll for the results please!!!  ;D

1) => 87 Mb/s
2) => 40 Mb/s
3) => 91 Mb/s
4) FF download => 5000 KB/s, so roughly sustained 50 Mb/s

All in all, I would say that is basically what I'm seeing on my Winx boxes.

It makes sense... Windows XP also had IP stack tuners to change some of these value's as you had reduced performance duo to certain IP settings not being tuned automatically.


Networking / Re: Intel 2915, no networks
« on: June 21, 2018, 01:24:41 am »
So the best of my understand the XWLAN in eCS 2.1 is antique so an upgrade is the first good step.
The issue you describe is a known bug. There are to many WiFi access, that is why your list is empty. This was fixed in later versions of XWLAN. 

One important thing is that the Xlwan should be able tind the file genmac.dim, which is bascially a DLL to access the Genmac driver. That is the only thing I can think off why it can not find the hardware.

Did you also check lantran.log that the driver really loaded succesfully ?

Networking / Re: NetDrive traps - since latest LIBCX drop...
« on: May 30, 2018, 04:40:14 pm »
Since the latest libcx/libc release (0.6.2-1.oc00 / 0.6.6-36.oc00) I started to see a consistent NetDrive crashes:

Code: [Select]
04-28-2018  18:44:32  SYS3175  PID 0021  TID 0003  Slot 0061
P1=00000001  P2=2105002c  P3=XXXXXXXX  P4=XXXXXXXX 
EAX=0289f92c  EBX=006f5380  ECX=00000001  EDX=00000004
ESI=2105002c  EDI=0289f92c 
DS=0053  DSACC=f0f3  DSLIM=ffffffff 
ES=0053  ESACC=f0f3  ESLIM=ffffffff 
FS=150b  FSACC=00f3  FSLIM=00000030
GS=0000  GSACC=****  GSLIM=********
CS:EIP=005b:1e754d45  CSACC=f0df  CSLIM=ffffffff
SS:ESP=0053:0289f8ac  SSACC=f0f3  SSLIM=ffffffff
EBP=0289f8d0  FLG=00010212

LIBC066.DLL 0001:00054d45

Has anyone else noticed anything similar to this?

I wonder whether the newly introduced 'SET LIBCX_HIGHMEM' option is causing some problems?

Currently the whole OS install runs with the default, which I believe is to do memhigh allocation whenever possible. I have not tried defaulting to 'SET LIBCX_HIGHMEM=2' instead, although that is my next test to see if NetDrive is impacted in any way.


Did you open a ticket with BWW about this ?

Roderick Klein

Networking / Re: Wifi bridge for OS/2 machines
« on: May 30, 2018, 04:34:44 pm »
I am using a TP-LINK TL-WR802N here in a hotel to to access the wifi.
Look up the model number on

Roderick Klein

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