Quote from: drays on February 19, 2017, 01:27:59 AM

Quote from: nifeleki on February 19, 2017, 12:52:44 AM

Quote from: drays on February 19, 2017, 12:45:23 AM

Quote from: nifeleki on February 19, 2017, 12:43:39 AM

Quote from: drays on February 19, 2017, 12:39:31 AM

Quote from: nifeleki on February 19, 2017, 12:27:40 AM

its 1371 kh/s with 32 threads. I just checked with 18 and it produces 762 kh/s . I can see the 4 threads that don't mine from the task manager . The miner on startup shows 36 miner threads started but cpu #32, #33, #34, and #35 are missing and task manager shows only 32 online.
check the pictures below
-t 36
http://prnt.sc/eairvt
-t 18
http://prnt.sc/eait62

The right thing to try would be to check what @thefix suggested above:

Quote from: thefix on February 18, 2017, 11:26:21 PM

What happens when you run two instances with -t 18

I tried it that is what im saying above. With -t 18 i get half of the hashrate. I tried everything with the -t parameter. I get the most hashrate with the most cores

Did you try running 2 instances of "cpuminer" at the same time (with "-t 18" each)? The sum of hahsrates could be better than one instance with "-t 36".

I ve tried this and this is what i get
http://image.prntscr.com/image/92b09f893d414f7a8836c26d3f809f27.png

Huh, thats a strange behaviour... Your Windows puts all the threads on the same 18 CPU's and leaves the rest unloaded! Shocked

Probably thats the way Windows works... I am pretty sure on Linux the system would distribute the load more evenly.

You could look here: http://www.tech-recipes.com/rx/37272/set-a-programs-affinity-in-windows-7-for-better-performance/
This is to change process affinity to force the Windows put cpuminer 1 on cores 1-16, and cpuminer 2 on cores 17-36.
Windoiws 10 has the same capability, you just need to choose "Go to details" after right-click on task in Task Manager.

Not sure this will work, and you might be wasting your time with this... but if you are into experiments, why not to try?

Quote from: nifeleki on February 19, 2017, 01:26:29 AM

Thank you guys, i will make the experiment i hope for better results. I checked the miner for decred and the same thing happens.

You're most welcome. Good luck with this!

It did the trick !!! Thank you drays !!! Now its 2 x (18 threads) 756 kh/s each
http://image.prntscr.com/image/3d5e21e14f1745e3a1f37dc66d50c5dd.png