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made logging performance drain obvious

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git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@352730 13f79535-47bb-0310-9956-ffa450edef68
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Andrew C. Oliver 2002-06-27 22:41:36 +00:00
parent 9a940f370e
commit 9acccaf1e9
2 changed files with 19 additions and 1 deletions
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13
src/documentation/xdocs/faq.xml
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@ -2,6 +2,19 @@
<!DOCTYPE faqs PUBLIC "-//APACHE//DTD FAQ V1.1//EN" "./dtd/faq-v11.dtd">
<faqs title="Frequently Asked Questions">
<faq>
<question>
Why is reading a simple sheet taking so long?
</question>
<answer>
You've probably enabled logging. Logging is intended only for
autopsie style debugging. Having it enabled will reduce performance
by a factor of at least 100. Logging is helpful for understanding
why POI can't read some file or developing POI itself. Important
errors are thrown as exceptions, which means you probably don't need
logging.
</answer>
</faq>
<faq>
<question>
What is the HSSF "eventmodel"?

7
src/documentation/xdocs/utils/logging.xml
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@ -7,6 +7,7 @@
<subtitle>Overview</subtitle>
<authors>
<person name="Nicola Ken Barozzi" email="nicolaken@apache.org"/>
<person name="Andrew C. Oliver" email="acoliver@apache.org"/>
</authors>
</header>
@ -15,7 +16,11 @@
<p>
Logging in POI is used only as a debugging mechanism, not a normal runtime
logging system.
logging system. Logging is ONLY for autopsie type debugging, and should
NEVER be enabled on a production system. Enabling logging will reduce
performance by at least a factor of 100. If you are not developing
POI or trying to debug why POI isn't reading a file correctly, then DO
NOT enable logging. You've been warned.
</p>
<p>