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Windchill System Administrator's Guide

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Performance Tuning<br />

remote site, thereby significantly improving access time. The files at the replica<br />

site remain retrievable by users at the master site.<br />

For more information, see the Content Replication For WAN Clients and Local<br />

Upload For WAN Clients sections in Performance Best Practices for <strong>Windchill</strong><br />

Pro/ENGINEER Data Management.<br />

Setting the Method Server Max Heap Size<br />

It is recommended that the default Java heap size for each method server be set to<br />

512MB in order to cope with large Pro/ENGINEER data sets that are common to<br />

the products developed by Pro/ENGINEER users.<br />

For more information on setting the max heap size, see the Method Server Max<br />

Heap Size section in Performance Best Practices for <strong>Windchill</strong> Pro/ENGINEER<br />

Data Management.<br />

Setting the SQL Statement Cache Size<br />

Data Compression<br />

It is recommended that the size and reuse limit of the method server’s SQL<br />

statement cache be increased to (field suggestion) 200 - 300 to avoid<br />

recomputation of SQL queries.<br />

For more information on setting the size of the SQL statement cache, see the SQL<br />

Statement Cache Size section in Performance Best Practices for <strong>Windchill</strong><br />

Pro/ENGINEER Data Management.<br />

The meta data compression option is intended to improve the upload and<br />

download performance of the Pro/ENGINEER Wildfire client for users accessing<br />

<strong>Windchill</strong> across a lower bandwidth network. This feature substantially improves<br />

the performance of upload and download operations for large family tables.<br />

In Pro/ENGINEER Wildfire, compression is controlled by a Pro/ENGINEER<br />

config.pro setting (dm_http_compression_level) as follows:<br />

dm_http_compression_level < an integer between 0 and 9 -- 0 for no<br />

compression, 9 for max compression><br />

While data compression can provide a benefit in a slow network, using<br />

compression puts an extra load on CPU resources; therefore, if network speed is<br />

not an issue, the use of compression may decrease performance and is not<br />

recommended.<br />

For more information on data compression, see the Upload/Download Metadata<br />

Compression Option In R6.2.6 DSU 4 section in Performance Best Practices for<br />

<strong>Windchill</strong> Pro/ENGINEER Data Management.<br />

10-24 <strong>Windchill</strong> <strong>System</strong> Administrator’s <strong>Guide</strong>

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