performance of XMS vs EMS

Thread View: comp.sys.ibm.pc.programmer

1 messages

[T] Back to Threads [V] Tree View [G] Group Articles

1 total messages Started by Freedman Wed, 30 Jan 1991 14:01

#1109

Author: Freedman
Date: Wed, 30 Jan 1991 14:01

30 lines
1782 bytes

  To all who have replied, thanks and my apologies for not being clear.
I aware that I have extended memory and I have books/manuals on both.
Here is my question rephrased and detailed.

   I have a Compaq 386/20e running DOS 3.3 with 4 megs of memory.
I have the Clarkson packet drivers installed and I am building
a TCP/IP analysis tool. One of the things I would like to do
is to sit on the net and just receive and record all packets
(time stamp them) for a while. I can receive and I have
a millisecond timer (thanks for the help folks). The packets
can come at me fast - up to 1.5k a packet with 2-3 millisecond
separation-. My receiver runs at interrupt level as does my timer.
Both EMS and XMS involve some fiddling around at interrupt level.
I am concerned about stepping on my own feet with either approach.
I am not concerned with portability or price. Just performance.
full protected mode might be nice but I have to support the
packet drivers too. I can get more memory or fancier hardware
if I really need it(I think;) ).

  So what is the best choice EMS with its timeconsuming paging,
XMS with switching back and forth from protected mode?.
Anybody got advice.



                                 Jerry Freedman,Jr

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads