Wow... that's pretty strange. > indexing just didn't do anything for some minutes and then started again.
I wonder if it's anything to do with DNS lookups or something like that? -Yonik On Thu, Mar 24, 2016 at 11:54 AM, Dragos Vizireanu <vizdra...@gmail.com> wrote: > 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
