Benchmarking The Linux 2.6.24 Through 2.6.29 Kernels Written by Michael Larabel in Software on 24 March 2009 at 01:07 PM EDT. Page 4 of 9. 26 Comments. There is not much to say about the GnuPG file encryption performance on the recent Linux kernels. The Linux 2.6.29 kernel really shines with OpenSSL and its RSA 4096-bit performance. The number of signs per second had doubled! In the Linux 2.6.24,