To calculate your hashrate:

Have a look at your debug.log file - find some lines like this . . . .

2016-02-03 04:17:29 HOdlcoinMiner:
2016-02-03 04:17:29 search finished - best hash 
  hash: 000f00a8eb9fde09dcfb398de5418c7fbbcbeb4d782dfbff396cf282c339e2dd collisions:1039 gethash:000f00a8eb9fde09dcfb398de5418c7fbbcbeb4d782dfbff396cf282c339e2dd ba:31773 bb:766922187 nonce:8861
target: 00000760a6000000000000000000000000000000000000000000000000000000
2016-02-03 04:17:36 HOdlcoinMiner:
2016-02-03 04:17:36 search finished - best hash 
  hash: 001d781dccb23ed017c6b805ac596f190124c4754b60ae091cd6621563bc64d2 collisions:989 gethash:001d781dccb23ed017c6b805ac596f190124c4754b60ae091cd6621563bc64d2 ba:253952 bb:2993905001 nonce:9325
target: 00000760a6000000000000000000000000000000000000000000000000000000

You'll see in this example that the searches are about 7 seconds apart . . . each completed search counts as approximately 1000 hashes (collisions) . . . so here there are 1000 per 7 seconds . . a rate of about 143 hash/sec. This is an i7 4770 and the overall network rate at the moment is 8417 hash/sec . . so the whole network is about as strong as 60 i7 4770's . . . . and if you're mining with an i7 4770, you would expect 1 in every 60 blocks. That's about 1 every 3 hours.