the bad thing now it kills my own xmr-stak instances mining to hold xmr
i had always running one xmr-stak cpu or amd running beside winminer to mine xmr without looking at profits just to mine to hold coins

We need custom miner settings ASAP...

WinMiner was originally built for managing the mining of our own mining farm. It continues to do so today and we keep making it better with our own insight together with the wisdom of our contributing users. This is to say that, our interests here are aligned, we are miners like you are and strive for best overall performance just like you do. We are the first to suffer from inefficiencies if such exist.

Specifically to your points:

(1) Hashrate - is it really constant?
The short answer is yes. The more accurate answer is divided into two: (a) Hashrate of a GPU generally has a certain max value, but it does sometimes fall beneath it. It could be for a shorter or longer periods of time and may be the results of overclocking, environmental conditions, operating system, drivers, CPU load (which may have a substantial impact on GPU performace) etc.; and (b) Coins having a DAG, e.g. Ethereum, mean that your hardware hashrate will change every few days (e.g. 5 days in the case of Ethereum).
To avoid a situations in which a system performance is based on the wrong hashrate reading, whether the result of a sudden drop or changing DAG, we decided to have the benchmarking run once every 24hrs.

(2) Can all coins based on the same algo be bechmarked by just one coin?
The short answer is yes. The more accurate answer is again divided into two: (a) Non ethash coins - bechmarking one coin is sufficient, and that is what we do; and (b) ethash coins (ETH, ETC, EXP, UBQ, MUSIC, DBIX etc.) - benchmarking needs to be done taking into account the DAG size - and that is what we do (here we minimize the need for benchmarking by categorising the coins into groups based on their DAG size and doing benchmarking once for the entire group).

Is there room for further optimization? - definitely
Are we working at it? - we sure do.



 

Thats the only coins supported by the CPU miners provided

I second that

Thanks for giving WinMiner a go and for sending this important feedback!
It will be very helpful if you could send the logs so we can have a deeper look (Help > Send Error Report, and please write your nickname so we can know its you)

Looking at the screenshots it appears you have changed the WinMiner default settings by having your Pentium CPU actively mine. This is really NOT recommended for a rig of multi GPUs, especially with a Pentium CPU.
A high load on a CPU, which is what you are probably getting by having it mine, can substantially hurt the performance of any GPU, let alone a rig of 8 GPUs like the one you have.

The trade off between getting an extra very little reward for the CPU mining but paying a dear price on your GPUs mining rewards is bad.

We recommend that you turn CPU mining off and examine the performance again.


 

i second that, if you need screenshots i will provide it, but its same as the one he did

Thanks for the feedback!
Can you please be more specific? - when you say "lost connection" do you mean that the page does not load at all? or that the page loads but shows one of your online miners as offline?
Dynamic IP should not be an issue.

Hi

Winminer recently started to randomly stops.

It usually say "idle" or "stopping miner" and it stays there. It happens at lease once a day.


I tried multiple time to send an error report but it always says that the error report was not sent due to an error..

Is there a way I can paste the error report here ?  Where is it located ?


EDIT I finally was able to send an error report:

http://imgur.com/a/iwGNO


thanks for your help