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- Path: sparky!uunet!cis.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.INS.CWRU.Edu!po.CWRU.Edu!bbm
- From: bbm@po.CWRU.Edu (Brian B. Mathewson)
- Newsgroups: comp.os.os2.misc
- Subject: Some leftover problems with OS/2
- Date: 2 Sep 1992 05:20:33 GMT
- Organization: Case Western Reserve University, Cleveland, OH (USA)
- Lines: 60
- Message-ID: <181iv1INN8s6@usenet.INS.CWRU.Edu>
- Reply-To: bbm@po.CWRU.Edu (Brian B. Mathewson)
- NNTP-Posting-Host: slc12.ins.cwru.edu
-
-
- Here are some problems I've had with OS/2 which I haven't seen reported
- and which I don't think have been corrected.
-
- By the way, I use a 16MHz 386SX and 6 Megs of RAM with the FAT file
- system. (I'd go to 8 Megs, but I'd have to buy SIPPs which wouldn't
- be compatible with a new motherboard.)
-
-
- Problems with OS/2:
-
- Since one of IBM's fixes, I've never had any more TRAPs. However, OS/2
- hangs sporadically when I try to do too many things at once. Sometimes
- Ctrl-Esc gets out of it. Most other times, the WorkPlace Shell is just
- doing a lot of routine things but with a lot of disk thrashing, and it
- hangs. Ctrl-Esc usually makes the disk light up for a second, but there
- is no activity after that. It seems that if it's possible for the
- Ctrl-Alt-Del or Ctrl-Alt-NumLock to work, then it should be a recoverable
- error. But, I've never recovered from a lockup where the mouse stopped
- working.
-
- My theory on why this happens: OS/2 enters a critical section, or a
- stretch of code with interrupts turned off, but when it turns interrupts
- back on, interrupts have piled up (mouse, keyboard, system timer, disk,
- DMA, video, etc.) and are waiting to be answered, but OS/2 just can't
- catch up on such a slow machine. (In my experience, not servicing an
- interrupt by the time the next same interrupt comes is usually pretty
- bad, depending on the hardware.) Or, a deadlock occurs.
-
- SVGA support is lacking. My WD 90C11 chip is not handled properly, even
- with SVGA ON and the latest fixes and all the FAQ tips. It's registers
- are not saved/restored properly and it loses sync with the monitor
- sometimes when switching between back from full-screen DOS sessions.
- Using the standard VGA resolution drivers (VVGA.SYS and BVHVGA.SYS)
- does not result in the same problem, but I can't leave programs in SVGA
- modes before switching. However, I'd rather have them work on the 32-bit
- video drivers first than this.
-
- Why do folders sometimes lose arrangement of icons? Sometimes the icons
- are moved way down, and you have to select Arrange to get them back
- together. (I've heard people report this problem before... Has it been
- resolved yet?)
-
-
- Performance problems:
-
- Floppy access from the WPS (i.e. double-clicking on the A: icon) prevents
- subsequent opening/closing/moving/resizing of windows until the Drive A:
- window opens up. Even though the WPS is not multithreaded (which would
- be nice), somehow, perhaps this could be coded so that it doesn't wait
- for the floppy.
-
- Have a speedier Find operation and Open/Close folders operations.
- The WPS find is slow compared to a [C:\] DIR /S WHATEVER.*
- Is it just because the thread runs at a lower priority?
-
- --
-
- Brian Mathewson bbm@r2d2.eeap.cwru.edu
- bbm at Cleveland Freenet
-