Author Topic: OS/4 (technical details only)  (Read 166237 times)

Bernhard Pöttinger

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Re: OS/4 (technical details only)
« Reply #285 on: September 04, 2023, 05:55:05 pm »
I have made all changes in config.os4 as described in the How To. The line EMSSWAPSIZE=300 is not known as a valid statement; boot continues, but the line is ignored.

OS4User

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Re: OS/4 (technical details only)
« Reply #286 on: September 04, 2023, 06:34:46 pm »
The line EMSSWAPSIZE=300 is not known as a valid statement; boot continues, but the line is ignored.

In kernel log you can see something like "Swap to 4Gb+ is set, size 1360Mb"

Just ignore the message  about ignoring a line. :)

But you said that kernel can see 3.5GB of mem  -  I was not able to force system to swap until restricted  visible mem to 1GB.

Bernhard Pöttinger

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Re: OS/4 (technical details only)
« Reply #287 on: September 05, 2023, 08:30:35 am »
The line EMSSWAPSIZE=300 is not known as a valid statement; boot continues, but the line is ignored.

In kernel log you can see something like "Swap to 4Gb+ is set, size 1360Mb"

OK. I have found this line "Swap to 4Gb+ is set, size 1200Mb".

But you said that kernel can see 3.5GB of mem  -  I was not able to force system to swap until restricted  visible mem to 1GB.

Yes I can use nearly 3,3GB for OS/2 on my Lenovo W520 and my Lenovo W500 Notebook.

I have another strange thing with OS4 kernel. Running "unzip -l", which should only list the content of an archive, shoes:
Quote
{10}[e:\] unzip -l os4_old.zip
error:  -Z must be first option for ZipInfo mode (check UNZIP variable?)
UnZip 6.00 of 20 April 2009, by Info-ZIP.  Maintained by C. Spieler.  Send
bug reports using http://www.info-zip.org/zip-bug.html; see README for details.

Usage: unzip [-Z] [-opts[modifiers]] file[.zip]
    [-x xlist] [-d exdir]
      Default action is to extract files in list, except those in xlist, to exdir;
      file[.zip] may be a wildcard.  -Z => ZipInfo mode ("unzip -Z" for usage).
Before upgrading the kernel and with the IBM kernel unzip works correct. This happens with every zip archive. [/list]

OS4User

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Re: OS/4 (technical details only)
« Reply #288 on: September 05, 2023, 09:05:55 am »
Before upgrading the kernel and with the IBM kernel unzip works correct. This happens with every zip archive.

I have just checked  - it works ok for me  (unzip  is the same ver)

Bernhard Pöttinger

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Re: OS/4 (technical details only)
« Reply #289 on: September 05, 2023, 12:12:26 pm »
Before upgrading the kernel and with the IBM kernel unzip works correct. This happens with every zip archive.

I have just checked  - it works ok for me  (unzip  is the same ver)
Strange, when I search if any unzip option is set I get
Quote
[E:\]set |grep -i unzip
UNZIPOPT=-NZIPOPT=-C
but I do not set this option in config.os4
Quote
[E:\]grep -i unzipopt Config.os4
SET UNZIPOPT=-C
If I set "UNZIPOPT=-C" everything works as expected.

Bernhard Pöttinger

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Re: OS/4 (technical details only)
« Reply #290 on: September 06, 2023, 03:11:46 pm »
Hi,
Is it possible to put the swapper.dat to the emsfs ram drive?
best regards
bernhard

OS4User

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Re: OS/4 (technical details only)
« Reply #291 on: September 06, 2023, 03:33:31 pm »
Is it possible to put the swapper.dat to the emsfs ram drive?

Theoretically, yes  (some extra steps are necessary and may be some fixes too),  but it will be slower than DMS for sure.

OS4User

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Re: OS/4 (technical details only)
« Reply #292 on: September 08, 2023, 01:29:30 pm »
To finalize the case with swap

Code: [Select]
SWAPPING ENHANCEMENT NOTE:

    Beginning with version 6259, the OS/4 kernel provides a Direct Memory Swap
    (DMS) feature and increases maximum swap size to 4GB (was 2GB). DMS uses
    4GB+ memory only. To activate DMS add EMSSWAPSIZE=XXX to your config.sys
    with desirable amount of 4Mb pages to be used for DMS.

    E.g.: EMSSWAPSIZE=300 switches on DMS and allocates 1.2GB memory for it.

    Min value is 1, max is 1024.

    The system uses DMS first, if the memory allocated for DMS is full, then
    it uses a swapfile as usual.

    If system has more 4GB+ memory then it uses for DMS it can be used for emsFS.ifs.
(from HowTo)

Lars

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Re: OS/4 (technical details only)
« Reply #293 on: September 10, 2023, 03:27:34 pm »
By the way: in 2018 the OS/4 team released a DOSCALL1.DLL.
Is that still necessary or will the standard OS/2 DOSCALL1.DLL (for the SMP Kernel) do?

OS4User

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Re: OS/4 (technical details only)
« Reply #294 on: September 10, 2023, 06:27:39 pm »
By the way: in 2018 the OS/4 team released a DOSCALL1.DLL.
Is that still necessary or will the standard OS/2 DOSCALL1.DLL (for the SMP Kernel) do?

OS/4 Team rewrote almost all  himem unsafe Dos Api. This required changing both the kernel and DC1. In order not to generate incompatible kernel/DC1 pairs, DC1 was placed in the kernel binary. So now OS/4 kernel is not using DOSCALL1.DLL file at all.

Lars

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Re: OS/4 (technical details only)
« Reply #295 on: September 10, 2023, 09:08:11 pm »
Ok, thanks for the info.