Performance testing was done on a server with following specifications:
***CPU**: Intel Xeon E5firstname.lastname@example.org GHz
***RAM**: 32 GB DDR3@1600 Mhz
***OS**: Debian, linux kernel 5.4.0
***NIC**: Intel X-520-2, 2x 10 Gb
DNS traffic to this server was generated and sent by Spirent TestCenter SPT-2000A through a 10 Gbps line.
All DNS traffic was sent over UDP with 33% of queries and responses containing EDNS record.
DNS Probe was run with default Sysrepo configuration with only `export-format` changed to `cdns` when measuring C-DNS performance and `coremask` changed to correspond with the number of packet processing threads shown in the table in section [Test results](#test-results).
## Test results
The following table contains results of the performance tests for DNS Probe. DNS Probe was run in four
different configurations depending on the packet processing backend and export format used.