Most results are for single server setup with the following configuration: two socket Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz; 128 GiB RAM; md RAID-5 on 8 6TB SATA HDD; ext4.
Some additional results (marked as x2, x3, x6) are for clustered setup for comparison. These results are contributed from independent teams and hardware specification may differ.
Disclaimer! Some results are outdated: