Hi, I set up a Solr instance with 512 cores. Each core has 100k documents and 15 fields. Solr is running on a CPU with 4 cores (2.7Ghz) and 16GB RAM.
Now I've done some benchmarks with JMeter. On each thread iteration JMeter queriing another Core by random. Here are the results (Duration: each with 180 second): Randomly queried cores | queries per second 1| 2016 2 | 2001 4 | 1978 8 | 1958 16 | 2047 32 | 1959 64 | 1879 128 | 1446 256 | 1009 512 | 428 Why are the queries per second until 64 constant and then the performance is degreasing rapidly? Solr only uses 10GB of the 16GB memory so I think it is not a memory issue.
