I too have had quite a low efficiency when mining on this pool.
I've got a variety of systems contributing, some of them are Windows and some of them are OSX. It seems that all of the OSX systems have horrid efficiency, while all of the Windows ones are working great.
The OSX systems are running poclbm-mod.py. Here is what I see:
19/05/2011 13:04:40, long poll: new block
19/05/2011 13:11:09, long poll: new block
19/05/2011 13:40:32, long poll: new block
19/05/2011 14:05:17, d6abb7d2, invalid or stale at 21% of getwork[73]
19/05/2011 14:06:43, long poll: new block
19/05/2011 14:33:20, long poll: new block
19/05/2011 15:07:23, long poll: new block
Another OSX system sees this:
19/05/2011 12:09:16, long poll: new block
19/05/2011 12:13:50, long poll: new block
19/05/2011 12:18:19, 371825f1, invalid or stale at 21% of getwork[83]
19/05/2011 12:29:27, long poll: new block
19/05/2011 12:33:52, fafb858a, accepted at 8% of getwork[85]
19/05/2011 12:42:10, d9b20eb9, invalid or stale at 57% of getwork[85]
19/05/2011 12:42:27, long poll: new block
19/05/2011 12:51:31, b65eaae6, invalid or stale at 16% of getwork[87]
19/05/2011 13:04:40, long poll: new block
19/05/2011 13:11:09, long poll: new block
19/05/2011 13:29:36, 840c5e4b, accepted at 2% of getwork[92]
19/05/2011 13:37:54, 4faa183e, invalid or stale at 49% of getwork[92]
19/05/2011 13:40:32, long poll: new block
19/05/2011 13:59:25, long poll: new block
19/05/2011 14:20:28, long poll: new block
19/05/2011 14:33:20, long poll: new block
19/05/2011 14:50:47, long poll: new block
19/05/2011 14:58:32, a469581e, invalid or stale at 12% of getwork[103]
19/05/2011 15:01:41, ef8738d0, invalid or stale at 30% of getwork[103]
19/05/2011 15:03:36, 8dd2b234, invalid or stale at 41% of getwork[103]
19/05/2011 15:06:44, 20c65cb2, invalid or stale at 58% of getwork[103]
19/05/2011 15:07:22, long poll: new block
19/05/2011 15:29:01, long poll: new block
I've never seen efficiency higher than 5% so far.
In all OSX examples I am using the following command line to launch the miners:
python poclbm-mod.py --user=1PC5hWLgpmLZie7Mqvt2GiU5zrSQkzWVJP --pass=blahblah -o pool.bitcoin.dashjr.org -p 8337 -d 0
Are the above symptoms a result of a mistake on my part? Or is it something beyond my control?
For reference my bitcoin address is 1PC5hWLgpmLZie7Mqvt2GiU5zrSQkzWVJP.
Thanks for any help,
--TE
I'm running Windows 7 with a Quadro FX 3700M Video card (in a M6400 Dell Laptop), so my invalid or stale blocks aren't due to Linux or OSX...