SPARC: 19.55% Performance Regression for the NCP Device Driver (6660074)

Performance regression occurs for the Niagara Crypto Provider (NCP) device driver on Sun SPARC® Enterprise T5220 machines with the Solaris 10 10/09 release. No error message is displayed.

Workaround: Add the following line to the /platform/sun4v/kernel/drv/ncp.conf configuration file:

ncp-threads-per-core=6;