toppin@melpar.UUCP (Doug Toppin) (05/11/89)
We are running IBM Xenix 2 (System V) and are adding to the
kernel several drivers (custom, Ethernet, windowing
package, and a multiport card). To get all of these in
I have had to reduce some of the constants in the /usr/sys/conf/master
file and am wondering what effect this will have on the
general performance of the operating system. For some reason
we have the best luck in getting the config to work when
NSABUF is reduced from 8 to 1. If I don't do the reduction
I get a DGROUP > 64K error and the config fails. The two
specific questions I have are:
* what effect does reducing NSABUF (and any other master
values) have on performance?
* is there a way to determine the size savings in reducing
any particular value by one without having to do it
and see if the kernel is smaller? I am compiling a small
program that includes space.h and has the master defines
at the beginning and does sizeofs but this has to be done
for a change in each value and that is slow.
Please mail responses to me. I will post useful replies.
thanks
Doug Toppin
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