Benchmarks for Linux Applications on S/390 Zseries?

qaseem asks: "I am looking for benchmark results of various applications (DB, WebAS, mail, etc.) on Linux on the S/390 mainframe. I am also looking for tools to stress test these applications when installed in the S/390 Linux partition. I was wondering if anyone has seen such information or tried such tools. On a side note I am also interested in finding a way to relate the MIPS speed of the S/390 to the world of MHz or GHz on other platforms."