-#. buffers-per-numa <value> - increases number of buffers allocated, needed
- in scenarios with large number of interfaces and worker threads.
- Value is per CPU socket. Default is 16384. CSIT is setting statically
- 107520 buffers per CPU thread (215040 if HTT is enabled). This value is also
- maximum possible amount limited by number of memory mappings in DPDK
- libraries for 2MB Hugepages used in CSIT.
+#. buffers-per-numa <value> - sets a number of memory buffers allocated
+ to VPP per CPU socket. VPP default is 16384. Needs to be increased for
+ scenarios with large number of interfaces and worker threads. To
+ accommodate for scale tests, CSIT is setting it to the maximum possible
+ value corresponding to the limit of DPDK memory mappings (currently
+ 256). For Xeon Skylake platforms configured with 2MB hugepages and VPP
+ data-size and buffer-size defaults (2048B and 2496B respectively), this
+ results in value of 215040 (256 * 840 = 215040, 840 * 2496B buffers fit
+ in 2MB hugepage).