Bill Crocker (or anyone else that might have additional information),
I have ran into performance issues after installing Windows XP SP2 as well,
and in my case, uninstalling SP2 does return the system to its pre-SP2
performance level. I would like very much, however, to take advantage of the
benefits of SP2 AND avoid serious performance issues if possible.
I have already tried using all the standard Windows XP tools to remove
temporary files and unused applications, disable unnecessary startup
applications, defragment disk utilizaiton, etc., and so far these efforts
have resulted in no significant improvement.
The performance issues I have experienced do not appear to be linked to any
one hardware or software configuration as I have witnessed this problem on
multiple systems.
These systems are mostly Intel Pentium 4-based ranging from 2 to 2.8 GHz,
with Hyperthreading enabled, on newer motherboards, 256 to 512 MB of RAM,
various AGP 4x or better video cards and 10/100+ network adapters, and fast
ATA hard drives.
The standard software profile includes, in addition to Windows XP w/ SP2,
various custom .NET 1.1 applications as well as the latest Corporate Edition
of Symantec Antivirus and handfull of other applications I have not yet seen
listed as having any known compatibibility issues.
All of the affected systems are members of an NT4 compatible domain and are
used in the high-volume processing of images and relational datasets.
The only hint I believe I have found is that, even on systems with larger
amounts of memory (512MB), I am seeing a very large number of hard page
faults even when less than half of physical memory is used.
I have tried enabling the LargeSystemCache option as noted in
http://www.microsoft.com/technet/prodtechnol/windows2000serv/maintain/optimize/wperfch7.mspx
with no improvement, although I intend to study this article in more detail.
If I restrict my software usage to one major application at a time, the
performance issue is minimal. Unfortunately, attempting to maintain this
practice on a regular basis creates a performance issue of a different nature
with a similar end result.
What I am currently trying to find out is whether or not Windows XP SP2
implements changes to memory, file, application, or network caching, or any
other type of system resource utilization or management, that would cause
such performance issues, and if so, what can be done to restore, or at least
improve, performance under SP2.
Unfortunatey it appears that further hardware upgrades offer little hope,
and although it is understood within my industry that there will always be a
battle to reduce resource utilization and increase process efficiency, I
cannot honestly recall a time when a single update had such a profound impact
As I search for answers I have yet to find, I am noticing that many others
may be facing similar, if not the same, unresolved issues. I welcome any
technical information that may be of assistance.
Scott Durbin