How to make Bugzilla faster on Linux?

[Raghava Rao]

Hello,
  I'm using Bugzilla with Apache Webserver, MySQL
Database and Perl modules on a Linux m/c. For some
reason unknown, when I create a new bug or make
changes to an existing one, it takes a long time to
process the bug and return with the resulting web
page. My question:
  1. How can we configure Bugzilla to be any faster?

  I tried setting the sendMailNow option to NO. Even
then, it is very slow. Any other tweaks I need to take
care of?
  Any help is appreciated.
  Thanks.
    Raghava

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