Novell NETWARE 6-DOCUMENTATION Manual page 1981

Configuring Maximum Simultaneous Requests
Enabling Domain Name System Lookups
52
Getting Results with Novell Web Services
You can set the number of maximum simultaneous requests, which is the
number of active requests allowed for the server at one time. If your site is
processing many requests that take many seconds, you might need to increase
the number of maximum simultaneous requests. However, for general Internet
or intranet use, you probably will not need to change the default value (128
requests).
If you need to change the number of maximum simultaneous requests, set the
number before starting the server.
1
From the Web Manager home page, click Enterprise Web Server
servername > Server Preferences > Performance Tuning.
2
In the Maximum Simultaneous Requests field, enter the number of
requests.
3
Click OK > Save and Apply.
You can configure the server to use Domain Name System (DNS) lookups
during normal operation. By default, DNS is not enabled; if you enable DNS,
the server looks up the hostname for a system's IP address. Although DNS
lookups can be useful for server administrators when looking at logs, they can
affect performance. When the server receives a request from a client, the
clients's IP address is included in the request. If DNS is enabled, the server
must look up the hostname for the IP address of each client that makes a
request.
IMPORTANT:
If you turn off DNS lookups on your server, hostname restrictions
won't work and hostnames won't appear in your log files. Instead, you'll see the IP
addresses.
You can also specify whether to cache the DNS entries. If you enable the DNS
cache, the server can store hostname information after receiving it. In the
future, if the server needs information about the client, the information is
cached and available without further queries. You can specify the size of the
DNS cache and an expiration time for DNS cache entries. The DNS cache can
contain from 32 to 32768 entries; the default value is 1024 entries. Values for
the time it takes for a cache entry to expire can range from 1 second to 1 year
(specified in seconds); the default value is 1200 seconds (20 minutes).