SOLVED: New ETH rig dropping 25%-75% HR every so often

[kisk]

[UPDATE - Solution reply has been added]


New rig: Mining ETH with Claymore's 9.0 and I'm having an issue with HR dropping by 25%-75% for a second or two about every 10 seconds, sometimes less. NOTE: This is NOT the 9.x issue with dual mining where random cards drop 5-10Mh/s -- my problem happens with ETH only and 8.1 as well, and HR drops on ALL cards. I'll be a thorough as possible here. I hate when people post questions with little info:


Win10
AMD 16.12.2
CPU:  Athlon II 170u 2Ghz (single core)
MOBO: Gigabyte  990FXA-UD3 R5 (all unnecessary options turned off)
8GB DDR3 (timings set correctly)
25GB VRam
60GB SSD
3x Gigabyte RX480 8GB (1750 straps)
3x Powercolor Red Devil RX480 8gb (1750 straps)

EthDcrMiner64.exe -epool us-east.ethash-hub.miningpoolhub.com:20535 -ewal user.rig02 -epsw x -ethi 16 -esm 3 -asm 1 -allpools 1 -mport XXXX -r 1 -di 530142 -dcri 10 -cclock 1145,1145,1145,1156,1167,1167 -cvddc 1037,918,1087,1031,1043,1037 -mclock 2150,2150,2150,2175,2175,2175

180Mh/s

The logs don't show me anything in particular out of the ordinary except for the drop in HR. Sometimes from 180MH/s to 150. Sometimes to 130. Sometimes less than 100. It doesn't last long and then returns to 180. I though it might be a power issue so I distributed the rig with 2 PSU's which didn't change anything. Tried 8.1, 9.0, 9.3. Set cards to default clocks. Tried ASM 0,1,2. multiple ETHI/DCRI values. Same. I did disconnect all 3 red devils and that fixed the issue. As soon as I connect a 4th GPU it starts happening again.

Couple things I'm thinking:
1) Maybe the CPU is too weak to keep up with certain functions? I have an Athlon 3.0ghz dual core on the way to test.
2) This motherboard does not have any settings for changing PCI-e options, gen1/gen2/gen3/Lat/etc. Maybe the lane bandwidth is hiccuping somewhere? I would think even 4 cards should be fine though, which its not.
3) I hot swapped this Win10 install from another rig (intel) and let Win10 reconfigure everything. Installed new drivers, and fresh installed video drivers. Maybe I'll try a full reinstall, or linux.
4) I don't think its a riser issue and it effects all the cards..

Hoping someone may see something I don't. Thanks for your help!!

Here are some logs:

GPU-z:
http://pasteboard.co/3rTLmaN7W.png

Code:

[b]10:21:54:543	544	ETH - Total Speed: 180.803 Mh/s, Total Shares: 23, Rejected: 0, Time: 00:12
10:21:54:593	544	ETH: GPU0 29.793 Mh/s, GPU1 26.330 Mh/s, GPU2 26.394 Mh/s, GPU3 30.455 Mh/s, GPU4 30.157 Mh/s, GPU5 30.241 Mh/s[/b]
10:21:57:749	169c	recv: 51
10:21:57:749	169c	srv pck: 50
10:21:57:952	169c	srv bs: 0
10:21:57:968	169c	sent: 241
10:22:02:483	82c	recv: 51
10:22:02:483	82c	srv pck: 50
10:22:02:655	82c	srv bs: 0
10:22:02:671	82c	sent: 241
10:22:07:140	544	send: {"id":6,"jsonrpc":"2.0","method":"eth_submitHashrate","params":["0xa074716", "0x00000000000000000000000000000000000000000000000000000000bf453132"]}

10:22:07:280	544	got 36 bytes
10:22:07:327	544	buf: {"id":6,"result":true,"error":null}

10:22:07:374	544	parse packet: 35
10:22:07:421	544	new buf size: 0
10:22:07:499	544	got 195 bytes
10:22:07:515	544	buf: {"id":null,"method":"mining.notify","params":["d70e","e586ce62651f6de0be923da595f6773a2d1bd9b41ca0ad927456061ed15c0a14","782e4b91007316a5d95c60f5fdba91557a12f49b5aeaf6b2699087d95feaa3da",false]}

10:22:07:515	544	parse packet: 194
10:22:07:530	544	ETH: job changed
10:22:07:530	544	new buf size: 0
10:22:07:546	544	ETH: 05/07/17-10:22:07 - New job from us-east.ethash-hub.miningpoolhub.com:20535
10:22:07:561	544	target: 0x0000000112dfaba1 (diff: 4000MH), epoch #122
[b]10:22:07:561	544	ETH - Total Speed: 139.031 Mh/s, Total Shares: 23, Rejected: 0, Time: 00:13
10:22:07:587	544	ETH: GPU0 21.107 Mh/s, GPU1 23.758 Mh/s, GPU2 23.802 Mh/s, GPU3 23.707 Mh/s, GPU4 23.303 Mh/s, GPU5 23.354 Mh/s[/b]
10:22:07:603	e3c	recv: 51
10:22:07:634	730	ETH: put share nonce 22c0000a400e00
10:22:07:634	e3c	srv pck: 50
10:22:07:650	730	ETH round found 1 shares
10:22:07:665	544	ETH:  Stale share found
10:22:07:712	544	ETH: 05/07/17-10:22:07 - SHARE FOUND - (GPU 4)
10:22:07:728	544	send: {"id": 4, "method": "mining.submit", "params": ["kisk.rig02","d70d","c0000a400e00"]}

10:22:07:806	544	got 36 bytes
10:22:07:806	544	buf: {"id":4,"result":true,"error":null}

10:22:07:821	544	parse packet: 35
10:22:07:821	544	ETH: Share accepted (94 ms)!
10:22:07:837	544	new buf size: 0
10:22:07:929	e3c	srv bs: 0
10:22:07:929	e3c	sent: 241
10:22:11:445	ff0	GPU0 t=64C fan=64%, GPU1 t=62C fan=65%, GPU2 t=68C fan=66%, GPU3 t=56C fan=63%, GPU4 t=60C fan=62%, GPU5 t=64C fan=65%
10:22:11:460	ff0	em hbt: 0, fm hbt: 16, 
10:22:11:476	ff0	watchdog - thread 0, hb time 250
10:22:11:493	ff0	watchdog - thread 1, hb time 656
10:22:11:493	ff0	watchdog - thread 2, hb time 656
10:22:11:509	ff0	watchdog - thread 3, hb time 250
10:22:11:509	ff0	watchdog - thread 4, hb time 656
10:22:11:525	ff0	watchdog - thread 5, hb time 250
10:22:11:525	ff0	watchdog - thread 6, hb time 687
10:22:11:540	ff0	watchdog - thread 7, hb time 297
10:22:11:540	ff0	watchdog - thread 8, hb time 109
10:22:11:556	ff0	watchdog - thread 9, hb time 562
10:22:11:556	ff0	watchdog - thread 10, hb time 781
10:22:11:571	ff0	watchdog - thread 11, hb time 390
10:22:11:587	1104	ETH: put share nonce 22d55557ac76d5
10:22:11:587	1104	ETH round found 1 shares
10:22:11:603	544	ETH: 05/07/17-10:22:11 - SHARE FOUND - (GPU 5)
10:22:11:618	544	send: {"id": 4, "method": "mining.submit", "params": ["kisk.rig02","d70e","d55557ac76d5"]}

10:22:11:706	544	got 36 bytes
10:22:11:706	544	buf: {"id":4,"result":true,"error":null}

10:22:11:722	544	parse packet: 35
10:22:11:722	544	ETH: Share accepted (94 ms)!
10:22:11:738	544	new buf size: 0
10:22:12:964	a4c	recv: 51
10:22:12:964	a4c	srv pck: 50
10:22:13:152	a4c	srv bs: 0
10:22:13:152	a4c	sent: 241
10:22:14:277	544	got 195 bytes
10:22:14:277	544	buf: {"id":null,"method":"mining.notify","params":["d70f","e586ce62651f6de0be923da595f6773a2d1bd9b41ca0ad927456061ed15c0a14","565c37529fd81168f3f2488c2b99dfbc8ec533c1f4e2aaae613b73df1c71df88",false]}

10:22:14:292	544	parse packet: 194
10:22:14:292	544	ETH: job changed
10:22:14:308	544	new buf size: 0
10:22:14:323	544	ETH: 05/07/17-10:22:14 - New job from us-east.ethash-hub.miningpoolhub.com:20535
10:22:14:323	544	target: 0x0000000112dfaba1 (diff: 4000MH), epoch #122
[b]10:22:14:350	544	ETH - Total Speed: 180.698 Mh/s, Total Shares: 25, Rejected: 0, Time: 00:13
10:22:14:366	544	ETH: GPU0 29.070 Mh/s, GPU1 29.020 Mh/s, GPU2 28.926 Mh/s, GPU3 30.461 Mh/s, GPU4 29.413 Mh/s, GPU5 30.531 Mh/s[/b]
10:22:17:475	91c	recv: 51
10:22:17:491	91c	srv pck: 50
10:22:17:663	91c	srv bs: 0
10:22:17:663	91c	sent: 241
10:22:22:709	1404	recv: 51
10:22:22:725	1404	srv pck: 50
10:22:22:897	1404	srv bs: 0
10:22:22:897	1404	sent: 241
10:22:26:928	1108	ETH: put share nonce 2215555ff0ef45
10:22:26:944	1108	ETH round found 1 shares
10:22:26:959	544	ETH: 05/07/17-10:22:26 - SHARE FOUND - (GPU 0)
10:22:26:959	544	send: {"id": 4, "method": "mining.submit", "params": ["kisk.rig02","d70f","15555ff0ef45"]}

10:22:27:053	544	got 36 bytes
10:22:27:053	544	buf: {"id":4,"result":true,"error":null}

10:22:27:068	544	parse packet: 35
10:22:27:068	544	ETH: Share accepted (94 ms)!
10:22:27:084	544	new buf size: 0
10:22:27:162	544	send: {"id":6,"jsonrpc":"2.0","method":"eth_submitHashrate","params":["0xaa1203c", "0x00000000000000000000000000000000000000000000000000000000bf453132"]}

10:22:27:240	544	got 36 bytes
10:22:27:240	544	buf: {"id":6,"result":true,"error":null}

10:22:27:256	544	parse packet: 35

[Jamievs]

I am gonna follow this thread. Some of my cards show the same odd behaviour.

[dddrgonzooo]

I have had similar issues due to memory errors and heat. Have you ran hwinfo to check for errors? You might need to drop your memory a bit. Have you bumped the power limit up? I set my fans at a static speed so that the cards don't throttle when the fans slow down and the gpu heats up.

[kisk]

I have had similar issues due to memory errors and heat. Have you ran hwinfo to check for errors? You might need to drop your memory a bit. Have you bumped the power limit up? I set my fans at a static speed so that the cards don't throttle when the fans slow down and the gpu heats up.

I don't think its mem errors or heat as this happens even when cards are set to stock speeds, core and mem. I have my minimum fan speed set to 2500rpm on all cards so temps rarely get past 70c. Setting power limits higher doesn't change anything. In my experience, not having sufficient power limit will cause the core to automatically underclock which you can see regularly go up and down in wattman. In my case all the clocks are stable. I'm undervolted anyway. Thanks for the suggestions though. I'm going to pull the plug on each card individually and see what I get. Maybe one card or slot is causing the others to fault somehow.

[m0bilitee]

I can get all my cards on a rig to just drop mining to near zero for about 15 seconds by clicking in the Cortana search box on Windows 10. Solution, don't do that anymore.

[philipma1957]

I have had similar issues due to memory errors and heat. Have you ran hwinfo to check for errors? You might need to drop your memory a bit. Have you bumped the power limit up? I set my fans at a static speed so that the cards don't throttle when the fans slow down and the gpu heats up.

drop all memory clocks by 50

drop all core by 25

lower

-ethi  to 7

that pulse in hash simply means the card clocks and intensity  setting is too high.



so hashrate throttles

I used to get single mode or dual mode on my msi gamer  rx 480 and asus  strix 480  all 8gb cards.

I simply lower everything a little at a time  til it stopped.

And I have all i5 intel cpus  and only 2 or 3 card rigs using 750 watt p2 evga  so it is not a psu or a cpu issue  the pulse is simply clock or intensity issue

[kisk]

I have had similar issues due to memory errors and heat. Have you ran hwinfo to check for errors? You might need to drop your memory a bit. Have you bumped the power limit up? I set my fans at a static speed so that the cards don't throttle when the fans slow down and the gpu heats up.

drop all memory clocks by 50

drop all core by 25

lower

-ethi  to 7

that pulse in hash simply means the card clocks and intensity  setting is too high.



so hashrate throttles

I used to get single mode or dual mode on my msi gamer  rx 480 and asus  strix 480  all 8gb cards.

I simply lower everything a little at a time  til it stopped.

And I have all i5 intel cpus  and only 2 or 3 card rigs using 750 watt p2 evga  so it is not a psu or a cpu issue  the pulse is simply clock or intensity issue

As stated above, my problem happens even at stock clocks and with intensity low. Lowering them has no effect.

[xxcsu]

As stated above, my problem happens even at stock clocks and with intensity low. Lowering them has no effect.

Is this happening with the original bios also with stock settings ? without any modification ? with original , unchanged mem straps ?
You did not said anything about what psu are u using. hashrate dropping can be a psu issue also ... ETH mining process use more power than zcash, xmr ...

[kisk]

SOLVED:

Just wanted to update the thread. It turns out it was the CPU. The 2GHz single core just couldn't keep up. Upgraded it to a 3.0Ghz dual core and no longer have any problems. Hash is stable!

Thanks to everyone that too a stab at the problem!!