A851 Hashrate steadily dropps

[avalonmin3r]

I have this power hungry ASIC on 3 separate power supplies (each power supply is on a different fuse on my residential panel, I am using extension cords). Each is a 120v 750W server power supply.  I actually have an original canaan sorcerer but do not have access to 220v at home (dont know how to make it work at home either, wish i could)

1) My problem is that the hash-rate steadily drops from 14.7 (Advertised speed) , slowly over a 24 hour period all the way down to 3 th/s. I will supply the CCMINER code when I can access it.

2) Should an ASIC run at advertised speed or do they ever go half speed when the network is not busy?

[HagssFIN]

For starters:
Have you looked at my Avalon troubleshooting guide?
It applies for the A851 as well.
(the url link is in ny signature space.)

[avalonmin3r]

I did, have referenced it before, thank you for creating that.

I am using wireless repeaters and am convinced they drop or degrade signal. I have ruled out power supply for now.

Will need help deciphering the Log file if possible, thank you in advance

[HagssFIN]

You can figure out if it is because of a bad network communication either by setting up a constant ping monitoring for your wifi setup or by simply trying a wired ethernet connection.

Is your ISP stable?

Is your pool stable?

[PassThePopcorn]

I'd suggest posting the log (enable debug first), copy paste the log after it drops, into code tags on here. I've never seen an 851 slow down due to network but haven't used wifi/repeaters for mining ever.

[avalonmin3r]

I dont know how helpful this will be. this log is right after it "Crashes" now. meaning it hashes nice at 14 th/s, but then drops connection. this all happens soon after it is started. It then resets, and then just goes into "low power mode" I call it, as it only hashes at 4-5th/s. I will post another log when I can from the "low power moder" when I can.

Code:

[Firmware Version] => Avalon Firmware for avalon8 - 20190404
    luci: b9dea8e
    cgminer: b2356a1
    cgminer-packages: bff9628
Reply was 'STATUS=S,When=1500206033,Code=70,Msg=CGMiner stats,Description=cgminer 4.10.0|STATS=0,ID=AV80,Elapsed=204,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,MM Count=0,Smart Speed=1,Connecter=AUC,AUC VER=AUC-20151208,AUC I2C Speed=400000,AUC I2C XDelay=19200,AUC Sensor=19709,AUC Temperature=15.32,Connection Overloaded=false,Voltage Level Offset=0,Nonce Mask=24,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=0 0|STATS=1,ID=POOL0,Elapsed=204,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=8192.00000000,Min Diff=8192.00000000,Max Diff=8192.00000000,Min Diff Count=317,Max Diff Count=317,Times Sent=74,Bytes Sent=8865,Times Recv=76,Bytes Recv=3250,Net Bytes Sent=8865,Net Bytes Recv=3250|STATS=2,ID=POOL1,Elapsed=204,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=0.00000000,Min Diff=0.00000000,Max Diff=0.00000000,Min Diff Count=0,Max Diff Count=0,Times Sent=2,Bytes Sent=145,Times Recv=5,Bytes Recv=1611,Net Bytes Sent=145,Net Bytes Recv=1611|STATS=3,ID=POOL2,Elapsed=204,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=0.00000000,Min Diff=0.00000000,Max Diff=0.00000000,Min Diff Count=0,Max Diff Count=0,Times Sent=2,Bytes Sent=145,Times Recv=5,Bytes Recv=1611,Net Bytes Sent=145,Net Bytes Recv=1611|'
[STATUS] =>
(
   [STATUS] => S
   [When] => 1500206033
   (Code) => 70
   [Msg] => CGMiner stats
   [Description] => cgminer 4.10.0
)
[STATS0] =>
(
   [STATS] => 0
   [ID] => AV80
   [Elapsed] => 204
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [MM Count] => 0
   [Smart Speed] => 1
   [Connecter] => AUC
   [AUC VER] => AUC-20151208
   [AUC I2C Speed] => 400000
   [AUC I2C XDelay] => 19200
   [AUC Sensor] => 19709
   [AUC Temperature] => 15.32
   [Connection Overloaded] => false
   [Voltage Level Offset] => 0
   [Nonce Mask] => 24
   [USB Pipe] => 0
   [USB Delay] => r0 0.000000 w0 0.000000
   [USB tmo] => 0 0
)
[STATS1] =>
(
   [STATS] => 1
   [ID] => POOL0
   [Elapsed] => 204
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 8192.00000000
   [Min Diff] => 8192.00000000
   [Max Diff] => 8192.00000000
   [Min Diff Count] => 317
   [Max Diff Count] => 317
   [Times Sent] => 74
   [Bytes Sent] => 8865
   [Times Recv] => 76
   [Bytes Recv] => 3250
   [Net Bytes Sent] => 8865
   [Net Bytes Recv] => 3250
)
[STATS2] =>
(
   [STATS] => 2
   [ID] => POOL1
   [Elapsed] => 204
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 0.00000000
   [Min Diff] => 0.00000000
   [Max Diff] => 0.00000000
   [Min Diff Count] => 0
   [Max Diff Count] => 0
   [Times Sent] => 2
   [Bytes Sent] => 145
   [Times Recv] => 5
   [Bytes Recv] => 1611
   [Net Bytes Sent] => 145
   [Net Bytes Recv] => 1611
)
[STATS3] =>
(
   [STATS] => 3
   [ID] => POOL2
   [Elapsed] => 204
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 0.00000000
   [Min Diff] => 0.00000000
   [Max Diff] => 0.00000000
   [Min Diff Count] => 0
   [Max Diff Count] => 0
   [Times Sent] => 2
   [Bytes Sent] => 145
   [Times Recv] => 5
   [Bytes Recv] => 1611
   [Net Bytes Sent] => 145
   [Net Bytes Recv] => 1611
)

[DaveF]

I have this power hungry ASIC on 3 separate power supplies

How do you have it on 3 separate supplies?
Unless I am missing something if you plug 2 power supplies into 1 of the power boards bad things are going to happen.
Each board should only have 1 power supply if you have to split them up.

-Dave

*I could be wrong but I know on the other Avalons it's one power bus so multiple PS are bad, never took a a851 apart.

[PassThePopcorn]

Can you upload a log of it working also? The log you posted doesn't have the miner listed / active or maybe that info is missing.

It should look something like this the only difference should be you only have 1 miner and this pi has 2.

Code:

[Firmware Version] => Avalon Firmware - 20190404
    luci: b9dea8e
    cgminer: b2356a1
    cgminer-packages: bff9628
Reply was 'STATUS=S,When=1557625596,Code=70,Msg=CGMiner stats,Description=cgminer 4.10.0|STATS=0,ID=AV80,Elapsed=1229940,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,MM ID1=Ver[8511904-82ceb60]
    DNA[01321bdab884691a]
    Elapsed[1229943]
    MW[363408169 363408266 363408371 363408459]
    LW[1453633265]
    MH[29 50 36 56]
    HW[171]
    DH[16.757%]
    Temp[40]
    TMax[85]
    Fan[4110]
    FanR[65%]
    Vi[1275 1275 1280 1280]
    Vo[3895 3926 3920 3925]
    GHSmm[11726.60]
    WU[163484.38]
    Freq[655.56]
    PG[15]
    Led[0]
    PM[1]
    ME[1 1 1 1]
    MW0[19015 19029 17469 18742 19296 13712 15810 17466 15746 13260 19047 18829 14383 18766 16817 17908 18995 15728 14410 18593 16406 17748 16308 19614 17230 19131]
    MW1[18334 15804 18567 19217 18729 19601 18614 19350 19377 17802 15810 19423 18283 18767 18373 17854 19398 15251 19005 17896 19663 18527 18868 18915 19134 19009]
    MW2[17593 19515 16571 14947 18479 19387 18534 17845 17879 19114 16858 18549 17790 18573 17558 18963 18982 16355 19061 19051 19084 19099 19068 18677 15751 18795]
    MW3[17577 19271 18706 17389 19413 18978 19009 16750 17111 19389 18841 15415 18308 18613 18866 19331 18992 18063 17557 19388 19587 19730 18500 18813 18521 19409]
    TA[104]
    ECHU[0 0 0 0]
    ECMM[0]
    FM[1]
    CRC[30 0 0 0],MM Count=1,Smart Speed=1,Connecter=AUC,AUC VER=AUC-20151208,AUC I2C Speed=400000,AUC I2C XDelay=19200,AUC Sensor=12645,AUC Temperature=37.60,Connection Overloaded=false,Voltage Level Offset=0,Nonce Mask=24,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=0 0|STATS=1,ID=AV81,Elapsed=1229940,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,MM ID1=Ver[8511904-82ceb60]
    DNA[01388263b81c2cdb]
    Elapsed[1229942]
    MW[363460155 363459573 363460336 363460083]
    LW[1453840147]
    MH[69 61 47 49]
    HW[226]
    DH[12.758%]
    Temp[39]
    TMax[85]
    Fan[5160]
    FanR[84%]
    Vi[1259 1259 1251 1251]
    Vo[3892 3901 3858 3870]
    GHSmm[11779.70]
    WU[167468.94]
    Freq[658.53]
    PG[15]
    Led[0]
    PM[1]
    ME[1 1 1 1]
    MW0[19040 19005 19373 16673 16740 19403 19304 19621 18482 18681 17338 18658 18082 19624 17053 19204 19491 19428 17771 19007 19240 19166 18723 18805 19149 19303]
    MW1[19264 17149 19436 19432 19029 19460 19529 19436 16943 18509 19122 18873 18818 19256 18771 19163 19247 19766 19759 19366 20047 17881 16099 19433 18920 18127]
    MW2[19441 18599 19319 19372 16714 19765 16273 18779 19055 19032 19467 18774 19105 16632 16534 15740 17350 19040 17258 18757 17291 19095 17598 19404 19073 18482]
    MW3[19185 19306 19303 19456 17704 17398 19713 17959 13082 17931 19595 18377 17497 18630 17380 18759 18832 18591 19658 19033 19159 19405 19612 19223 18836 19172]
    TA[104]
    ECHU[0 0 0 0]
    ECMM[0]
    FM[1]
    CRC[34 0 0 0],MM Count=1,Smart Speed=1,Connecter=AUC,AUC VER=AUC-20151208,AUC I2C Speed=400000,AUC I2C XDelay=19200,AUC Sensor=12419,AUC Temperature=38.41,Connection Overloaded=false,Voltage Level Offset=0,Nonce Mask=24,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=0 0|STATS=2,ID=POOL0,Elapsed=1229940,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=9000.00000000,Min Diff=1.00000000,Max Diff=32000.00000000,Min Diff Count=9,Max Diff Count=238673,Times Sent=2229777,Bytes Sent=328701440,Times Recv=2261427,Bytes Recv=129820588,Net Bytes Sent=328701440,Net Bytes Recv=129820588|STATS=3,ID=POOL1,Elapsed=1229940,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=0.00000000,Min Diff=0.00000000,Max Diff=0.00000000,Min Diff Count=0,Max Diff Count=0,Times Sent=0,Bytes Sent=0,Times Recv=0,Bytes Recv=0,Net Bytes Sent=0,Net Bytes Recv=0|'
[STATUS] =>
(
   [STATUS] => S
   [When] => 1557625596
   (Code) => 70
   [Msg] => CGMiner stats
   [Description] => cgminer 4.10.0
)
[STATS0] =>
(
   [STATS] => 0
   [ID] => AV80
   [Elapsed] => 1229940
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [MM ID1] => Ver[8511904-82ceb60]
    DNA[01321bdab884691a]
    Elapsed[1229943]
    MW[363408169 363408266 363408371 363408459]
    LW[1453633265]
    MH[29 50 36 56]
    HW[171]
    DH[16.757%]
    Temp[40]
    TMax[85]
    Fan[4110]
    FanR[65%]
    Vi[1275 1275 1280 1280]
    Vo[3895 3926 3920 3925]
    GHSmm[11726.60]
    WU[163484.38]
    Freq[655.56]
    PG[15]
    Led[0]
    PM[1]
    ME[1 1 1 1]
    MW0[19015 19029 17469 18742 19296 13712 15810 17466 15746 13260 19047 18829 14383 18766 16817 17908 18995 15728 14410 18593 16406 17748 16308 19614 17230 19131]
    MW1[18334 15804 18567 19217 18729 19601 18614 19350 19377 17802 15810 19423 18283 18767 18373 17854 19398 15251 19005 17896 19663 18527 18868 18915 19134 19009]
    MW2[17593 19515 16571 14947 18479 19387 18534 17845 17879 19114 16858 18549 17790 18573 17558 18963 18982 16355 19061 19051 19084 19099 19068 18677 15751 18795]
    MW3[17577 19271 18706 17389 19413 18978 19009 16750 17111 19389 18841 15415 18308 18613 18866 19331 18992 18063 17557 19388 19587 19730 18500 18813 18521 19409]
    TA[104]
    ECHU[0 0 0 0]
    ECMM[0]
    FM[1]
    CRC[30 0 0 0]
   [MM Count] => 1
   [Smart Speed] => 1
   [Connecter] => AUC
   [AUC VER] => AUC-20151208
   [AUC I2C Speed] => 400000
   [AUC I2C XDelay] => 19200
   [AUC Sensor] => 12645
   [AUC Temperature] => 37.60
   [Connection Overloaded] => false
   [Voltage Level Offset] => 0
   [Nonce Mask] => 24
   [USB Pipe] => 0
   [USB Delay] => r0 0.000000 w0 0.000000
   [USB tmo] => 0 0
)
[STATS1] =>
(
   [STATS] => 1
   [ID] => AV81
   [Elapsed] => 1229940
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [MM ID1] => Ver[8511904-82ceb60]
    DNA[01388263b81c2cdb]
    Elapsed[1229942]
    MW[363460155 363459573 363460336 363460083]
    LW[1453840147]
    MH[69 61 47 49]
    HW[226]
    DH[12.758%]
    Temp[39]
    TMax[85]
    Fan[5160]
    FanR[84%]
    Vi[1259 1259 1251 1251]
    Vo[3892 3901 3858 3870]
    GHSmm[11779.70]
    WU[167468.94]
    Freq[658.53]
    PG[15]
    Led[0]
    PM[1]
    ME[1 1 1 1]
    MW0[19040 19005 19373 16673 16740 19403 19304 19621 18482 18681 17338 18658 18082 19624 17053 19204 19491 19428 17771 19007 19240 19166 18723 18805 19149 19303]
    MW1[19264 17149 19436 19432 19029 19460 19529 19436 16943 18509 19122 18873 18818 19256 18771 19163 19247 19766 19759 19366 20047 17881 16099 19433 18920 18127]
    MW2[19441 18599 19319 19372 16714 19765 16273 18779 19055 19032 19467 18774 19105 16632 16534 15740 17350 19040 17258 18757 17291 19095 17598 19404 19073 18482]
    MW3[19185 19306 19303 19456 17704 17398 19713 17959 13082 17931 19595 18377 17497 18630 17380 18759 18832 18591 19658 19033 19159 19405 19612 19223 18836 19172]
    TA[104]
    ECHU[0 0 0 0]
    ECMM[0]
    FM[1]
    CRC[34 0 0 0]
   [MM Count] => 1
   [Smart Speed] => 1
   [Connecter] => AUC
   [AUC VER] => AUC-20151208
   [AUC I2C Speed] => 400000
   [AUC I2C XDelay] => 19200
   [AUC Sensor] => 12419
   [AUC Temperature] => 38.41
   [Connection Overloaded] => false
   [Voltage Level Offset] => 0
   [Nonce Mask] => 24
   [USB Pipe] => 0
   [USB Delay] => r0 0.000000 w0 0.000000
   [USB tmo] => 0 0
)
[STATS2] =>
(
   [STATS] => 2
   [ID] => POOL0
   [Elapsed] => 1229940
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 9000.00000000
   [Min Diff] => 1.00000000
   [Max Diff] => 32000.00000000
   [Min Diff Count] => 9
   [Max Diff Count] => 238673
   [Times Sent] => 2229777
   [Bytes Sent] => 328701440
   [Times Recv] => 2261427
   [Bytes Recv] => 129820588
   [Net Bytes Sent] => 328701440
   [Net Bytes Recv] => 129820588
)
[STATS3] =>
(
   [STATS] => 3
   [ID] => POOL1
   [Elapsed] => 1229940
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 0.00000000
   [Min Diff] => 0.00000000
   [Max Diff] => 0.00000000
   [Min Diff Count] => 0
   [Max Diff Count] => 0
   [Times Sent] => 0
   [Bytes Sent] => 0
   [Times Recv] => 0
   [Bytes Recv] => 0
   [Net Bytes Sent] => 0
   [Net Bytes Recv] => 0
)

How do you have it on 3 separate supplies?
Unless I am missing something if you plug 2 power supplies into 1 of the power boards bad things are going to happen.
Each board should only have 1 power supply if you have to split them up.

-Dave

*I could be wrong but I know on the other Avalons it's one power bus so multiple PS are bad, never took a a851 apart.

This could be it also, I have run half an avalon on one PSU without any noticeable issue but I've never split the load before. It should be one PSU connected to two PMU's, each PMU is connected to two hashboards. You might be able to get away with 2 PSU's but it's really not designed for that.

[avalonmin3r]

I am running it off 2 PSU now, seems to magically be working.

For some reason I thought having another PSU would help it get more power if needed. I am providing it 1500W now ( 750 on each psu). Just worried it will not be enough to reliably run. I think we found the answer. I will provide another log if issues come up

[PassThePopcorn]

I am running it off 2 PSU now, seems to magically be working.

For some reason I thought having another PSU would help it get more power if needed. I am providing it 1500W now ( 750 on each psu). Just worried it will not be enough to reliably run. I think we found the answer. I will provide another log if issues come up

You might want to run it in the low mode, or balanced with a voltage offset of -2. Default settings in balanced mode pull just above 1500w's, High mode comes out to like 1800w or something like that.

[DaveF]

Do a quick google of series vs parallel circuits you were either putting 24v into the miner or the power supplies were trying to compensate and were doing who knows what.
If it's mining OK now then don't worry about it. But I would replace the 750 units with something bigger.

-Dave

They do make devices that go from 110v to 220v

https://www.amazon.com/Simran-AC-5000-Voltage-Converter-Transformer/dp/B004MPR44E

You still need enough amperage to do it and they do add another layer of resistance / inefficiency to the setup but they can be used.

Since you can run this on a pair of 110v PSU I would do that, but if you get something that is 220 only so long as you have 110 and enough amps it can be done.

-Dave

[philipma1957]

You could use 2 of these


https://www.ebay.com/itm/HP-DPS-1200FB-A-1200W-PSU-Power-Supply-438202-002-579229-001-HSTNS-PD11-TESTED/323944053542?


these will do 900 watts on 120 volts.

I sent a pm