Alida Jatich <[log in to unmask]> wrote:
>First of all...I'd like to thank all the people who replied to my
>questions about 5.0 performance woes. Looks like that's a big issue
>for others as well.
>
>We did put in the Power Patch which is supposed to get us to the .02
>level. This is supposed to have the memory management patch included
>in it. However, when we looked at the revision log, it said that this
>patch is for systems with less than 24mb of memory. (This does not
>apply to us.) The people on this forum who were kind enough to reply
>to me, had mentioned a low memory patch for use with systems having
>less than 96mb of memory. Is there more than one patch, or is the
>documentation inconsistent? Does anyone know for sure what this patch
>actually does?
>
>Also, when I do a :SHOWME, it shows the release number 5.00.00, even
>though our revision log file does show that the Power Patch was put in.
>Why does it not show up on our logon message? Does this mean something
>is wrong?
>
>Thanks in advance...
>
>Alida
>
>--
>Alida Jatich, Sr. Pgmr./Analyst
>Heinemann's Bakeries
>
>
You have termed the patch the "memory management patch".  In fact, this
patch was fairly simple -- we found a fairly large system table in
Release 5.0 that was marked to be "memory resident" (i.e. always in
memory) when the system booted; in fact, this table did not need to be
memory resident.  This patch corrected this by marking this particular
table as swappable, thereby freeing up the memory it used to hog.  On
small memory systems, the chunk of memory freed up was a significant
percentage of the available memory, but on large systems, the chunk was
a smaller percentage (the table was of a fixed size, regardless of the
system configuration).  That's why we indicated that the patch worked
best on small memory systems.
 
The installation of a Powerpatch has no impact on the :SHOWME command
output (although that might be an interesting enhancement).  To find
out more about the patching level on your system, look at the ASCII file
HPSWINFO.PUB.SYS on your system -- the first four lines will indicate
which Powerpatch you have installed.
 
 
Jon Cohen
HP Commercial Systems Division