Tuning Apache Solr

Michael Sun explains how to optimize Apache Solr’s memory usage:

For Oracle JDK 8, both CMS and G1 GC are supported. As rule of thumb, if the heap size is less than 28G, CMS works well. Otherwise G1 is a better choice. If you choose G1, there are more details about G1 configuration in the part 2 of this blog. You can also find helpful guidance in Oracle’s G1 tuning guide.

Meanwhile it’s always a good idea to enable GC logging. The overhead of GC logging is trivial but it gives us a better understanding how the JVM uses memory under the hood. This information is essential in GC troubleshooting. Here is an example of GC logging settings.

There’s some good administrative assistance, but also tips on more efficient querying.

Related Posts

Notifications when Admins Connect to a SQL Server

Jon Shaulis builds a logon trigger to notify when sysadmins log into his systems: I was helping someone set up some monitoring in their database and they were asking about being notified when someone with administrative privileges logs into SQL Server. While many of you know that I try to use the right tool for […]

Read More

Memory Defaults in SQL Server 2019

Randolph West looks at a new settings tab in the SQL Server 2019 installation: In 2016 I created the Max Server Memory Matrix as a guide for configuring the maximum amount of memory that should be assigned to SQL Server, using an algorithm developed by Jonathan Kehayias. SQL Server 2019 is still in preview as I write this, but […]

Read More

Categories

June 2017
MTWTFSS
« May Jul »
 1234
567891011
12131415161718
19202122232425
2627282930