Configuring re-indexing and repair

Change the size of the RAM buffer and increase the soft commit time in the solrconfig.xml file to tune the performance of re-indexing and index building.

When running the RELOAD command using the reindex or deleteAll options, a long delay might indicate that tuning is needed. Tune the performance of re-indexing and index rebuilding by making a few changes in the solrconfig.xml file.

Procedure

  1. Increase the size of the RAM buffer, which is set to 100MB by default, to 125 for example. 
    <indexConfig>
  <useCompoundFile>false</useCompoundFile>
  <ramBufferSizeMB>125</ramBufferSizeMB>
  <mergeFactor>10</mergeFactor>
. . .
  2. Increase the soft commit time, which is set to 1000 ms by default, to a larger value. For example, increase the time to 15-16 minutes: 
    <autoSoftCommit>
  <maxTime>1000000</maxTime>
</autoSoftCommit>
    The downside of changing the autoSoftCommit attribute is that newly updated rows take longer than usual (1000 ms) to appear in search results.