2.2% regected shares high ?

[mute20]

So I am using 1.61 phoenix with phatk 4% increase powercolor 6850. Does this seem high?

[echo2]

well it does seem a little high because i get around 1% rejection rate on my 5830 with cgminer
but 1-3% is normal

[DrHaribo]

I would say over 1% is high

[teukon]

I think it depends a lot on the server.  I think 1-1.5% is typical but you'd have to check with your specific pool.  That said I would personally consider anything over 1% too high.  I'm using phoenix and phatk 2.2 on two 5850s and they currently read:

[355.12 Mhash/sec] [5143 Accepted] [5 Rejected] [RPC (+LP)]
[377.12 Mhash/sec] [5411 Accepted] [8 Rejected] [RPC (+LP)]

so about 0.12% rejects.

Kernel versions can affect rejects and aggression makes a small difference too but the server was the key thing for me.  I mine with simplecoin.us which has just rolled out a serious new dedicated server (pool.simplecoin.us).  Big pools use several servers so perhaps try switching between them.

Also, I don't believe phoenix discerns between shares rejected because they are old and ones rejected because they are invalid.  If your rejected shares are clustered around/after new work units are pushed then try different pools/servers; if they are scattered at random then try lowering your cards core or RAM clocks and/or trying different kernels (there's plenty of variation between all of Diapolo's and Phateus' phatk versions).

[Trini8ed]

You should be fine I think its more a streak of bad luck in my opinion.

[jrtubs]

that seems very high i have never had more then .20%, make sure you're in a pool with long pooling.

[teukon]

I have no idea whether or not it makes a difference but you could try forwarding the appropriate port in your router.

[mute20]

I dropped the core clock on my card by 8 mhz. Seemed to do the trick down to 0.3%

[echo2]

you should try diffrent miners and run for a day to see which one haz the lowest rejection rate

[mute20]

So after running at 8 mhz less I have found that overclock caused the 4x+ increase in rejected shares. It is easily losing some hashing speed for a lower rejected rate.

[echo2]

join this pool https://bitcointalk.org/index.php?topic=33586.0;topicseen
accepts rejected shares