Common Performance Problems
This chapter discusses common web site performance problems, and includes the following
topics:
■
“check-acl Server Application Functions” on page 85
■
“Low-Memory Situations” on page 86
■
“Too Few Threads” on page 86
■
“Cache Not Utilized” on page 87
■
“Keep-Alive Connections Flushed” on page 87
■
“Log File Modes” on page 88
Note – For platform-specic issues, see Chapter 4, “Platform-Specic Issues and Tips”
check-acl Server Application Functions
For optimal performance of your server, use ACLs only when required.
The server is congured with an ACL le containing the default ACL allowing write access to
the server only to all, and an es-internal ACL for restricting write access for anybody. The
latter protects the manuals, icons, and search UI les in the server.
The default obj.conf le has NameTrans lines mapping the directories that need to be read-only
to the es-internal object, which in turn has a check-acl SAF for the es-internal ACL.
The default object also contains a check-acl SAF for the default ACL.
You can improve performance by removing the check-acl SAF from the default object for
URIs that are not protected by ACLs.
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