Can anyone help? My speeds have decreased a bit after compiling and installing minerd on a ubuntu VM with Core2 Duo E8500.
[2013-05-30 14:59:15] thread 0: 34201 hashes, 6.80 khash/s
[2013-05-30 14:59:20] thread 0: 34006 hashes, 6.54 khash/s
[2013-05-30 14:59:25] thread 0: 32707 hashes, 6.53 khash/s
[2013-05-30 14:59:30] thread 0: 32634 hashes, 6.71 khash/s
[2013-05-30 14:59:35] thread 0: 33558 hashes, 6.44 khash/s
[2013-05-30 14:59:40] thread 0: 32213 hashes, 6.44 khash/s
Do I need to re-compile with some other flags?
That's simple fluctuation. No hardware runs in the same conditions constantly for an exponential amount. It fluctuates mainly because operating systems pull background commands all the time, and power feed is never 100% constant. It's nothing to worry about. If it fluctuates more than 20% then you have an issue. Yours is less than 5%.