Novell NETWARE 6-DOCUMENTATION Manual page 1982

Configuring Listen Queue Size
To modify DNS settings, do the following:
1
From the Web Manager home page, click Enterprise Web Server
servername > Server Preferences > Performance Tuning.
2
Select No or Yes to enable DNS.
3
Select No or Yes to enable Async DNS.
4
Select No or Yes to cache DNS entries.
5
(Conditional) If you cache DNS entries, enter the number of entries that
you want cached in the Size of DNS Cache field. In the Expire Entries
field, enter the number of seconds at which a cache entry will be deleted.
6
Click OK > Save and Apply.
The listen queue size is a socket-level parameter that specifies the number of
incoming connections the system will accept for that socket. The default
setting is Incoming Connections.
Normally, you should not change the listen queue size. The default setting is
sufficient in most cases.
If you manage a heavily used Web site, you should make sure your system's
listen queue size is large enough to accommodate the listen queue size setting
from the Server Preferences form. If you do change the listen queue size, make
sure that your system supports the new size. The listen queue size set from the
Server Preferences form changes the listen queue size requested by the server.
If the server requests a listen queue size larger than the system's maximum
listen queue size, the size defaults to the system's maximum.
IMPORTANT:
Setting the listen queue size too high can degrade server
performance. The listen queue size was designed to prevent the server from
becoming overloaded with connections it cannot handle. If your server is
overloaded and you increase the listen queue size, the server will only fall further
behind.
To modify the listen queue size, do the following:
1
From the Web Manager home page, click Enterprise Web Server
servername > Server Preferences > Performance Tuning.
2
In the Listen Queue Size field, enter the listen queue size you want.
3
Click OK > Save and Apply.
Managing the Web Server
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