Hi, I have a big problem with the performance of running Solr 5 with JDK 8.
Details: - tried with both Solr 5.4.0 and Solr 5.5.0 (even with Solr 4) - default Solr 5 configuration - created a new core, for which I am using data import handler to get data from MySQL When I am trying to index data using the import handler, the import is very fast with JDK 7 and awful slow with JDK 8 ! Here are the results copied from Solr gui: - *JDK 7 - Duration 17 seconds* Indexing completed. Added/Updated: 5,997 documents. Deleted 0 documents. *(Duration: 17s)* Requests: 6 (0/s), Fetched: 235,593 (13,858/s), Skipped: 0, Processed: 5,997 (353/s) - *JDK 8 - Duration 7 minutes* Indexing completed. Added/Updated: 5,997 documents. Deleted 0 documents. *(Duration: 7m 06s)* Requests: 6 (0/s), Fetched: 47,160 (111/s), Skipped: 0, Processed: 5,997 As you can see, there is a problem with the performance being awful with JDK 8. While calling DIH to index, I got no errors in the log, but the indexing just didn't do anything for some minutes and then started again. This is very strange I could not find the reason why this is happening. I also found these ideas on Solr Wiki: https://wiki.apache.org/solr/SolrPerformanceProblems -> GC pause problems https://wiki.apache.org/solr/ShawnHeisey#GC_Tuning_for_Solr The thing is that it's saying " If you are using the bin/solr or bin\solr script to start Solr, you already have GC tuning and won't need to worry about the recommendations here."; I did check the scripts in /bin directory and there is set a Garbage tuning "set GC_TUNE ...". I would appreciate if you can help with this issue. Best regards, Dragos
