Running the Oracle HTTP Server on OpenVMS
Apache Server Installation/Configuration
D-5
Performance Considerations
You should have prior experience tuning the performance of the OpenVMS
operating system
.
For general information on OpenVMS performance, see the
OpenVMS Performance Management Manual at the following URL:
http://www.openvms.compaq.com:8000/73final/6491/6491pro.html
Recommendations for improving performance on a Oracle HTTP Server are
provided below and in the Release Notes:
Limits and Quotas
The following table shows sample values for the ORACLE Account from a working
and exercised Oracle HTTP Server with a light to moderate load
.
These values are
presented as an example of a system performing well within its context
.
If you
should experience performance difficulties, refer to this table for guidelines in
making adjustments
.
For heavier loads, we point out which values, in our
experience, need to be increased as load increases
.
Keep in mind that no one set of
values will be appropriate for all situations.
Table D–1
Sample Values for the ORACLE Account
Parameter
Default
On Hewlett-Packard Web Server
ASTLM (NonPooled)
Total number of asynchronous
system trap (AST) operations and
scheduled wake-up requests the
user can have queued at one time
250
610
Or BIOLM + DIOLM + 10
BIOLM (NonPooled)
Number of outstanding buffered
I/O operations permitted for a
user’s process
150
300
You might also need to increase the
SYSGEN parameter CHANNELCNT
because it limits BIOLM,DIOLM, and
FILLM.
BYTLM (Pooled)
Amount of buffer space a user’s
process can use
64000
200000
Increase this value for a heavy load.
CHANNELCNT
256
FILLM and CHANNELCNT should be
increased to match each other.
