I integrated the hashmeter idea into the SVN version. It displays khash/s in the left section of the status bar.
Two new log messages:
21/06/2010 01:23 hashmeter 2 CPUs 799 khash/s
21/06/2010 01:23 generated 50.00
grep your debug.log for "generated" to see what you've generated, and grep for "hashmeter" to see the performance. On windows, use:
findstr "hashmeter generated" "%appdata%\bitcoin\debug.log"
I have the hashmeter messages once an hour. How often do you think it should be?