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Ryzen 1700 core0 mysterious high usage

post #1 of 2
Thread Starter 
I started noticing this last week after my machine had been up and running for a couple days. It seems to be 3-4 days of being on 24/7 before this issue appears.

I fire up a game and notice reduced frame rate, sometimes drastic. HWinfo shows core0 pegged at 100% while the other cores behave like usual.

I had a couple browsers open, twitch livestreamer and video player open when I started the game.

So I closed everything leaving only what boots with windows except HWinfo.

this is what I see

HWinfo and windows task manager do not seem to agree. I scrolled through task manager and could find nothing except a few processes using 5-6%

Restarting my machine does clear this issue up. But what the hell is using 77% of core 0 right now?

this is win8.1 and I have SMT off right now BTW. It's balanced power setting now, but I had the issue with high performance set before as well.
Edited by 7850K - 3/20/17 at 5:54pm
 
ASUS R510DP
(8 items)
 
 
CPUMotherboardGraphicsRAM
AMD Ryzen 1700 ASRock Fatal1ty AB350 Gaming K4 (BIOS 1.42 beta) HIS 7870 IceQ 2x8GB G.Skill TridentZ 3200Mhz CL16 
Hard DriveHard DriveHard DriveHard Drive
Plextor 256GB SSD Toshiba X300 6TB Toshiba X300 6TB Toshiba 2TB 
CoolingOSMonitorMonitor
AMD Wraith Spire Windows 8.1 Pro x64 HP S2031 20" Samsung SyncMaster 932BW 19" 
PowerCase
Seasonic S12G 750w Lian Li full tower 
CPUMotherboardGraphicsRAM
A10-5750m 3.5Ghz ASUStek A75M FCH HD 8650G + HD 8670M dual graphics 2x4GB Samsung 1600Mhz 
Hard DriveOptical DriveOSMonitor
Toshiba Q300 SSD 120GB yes Windows 8.1 Pro 15.6" 1920x1080 
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ASUS R510DP
(8 items)
 
 
CPUMotherboardGraphicsRAM
AMD Ryzen 1700 ASRock Fatal1ty AB350 Gaming K4 (BIOS 1.42 beta) HIS 7870 IceQ 2x8GB G.Skill TridentZ 3200Mhz CL16 
Hard DriveHard DriveHard DriveHard Drive
Plextor 256GB SSD Toshiba X300 6TB Toshiba X300 6TB Toshiba 2TB 
CoolingOSMonitorMonitor
AMD Wraith Spire Windows 8.1 Pro x64 HP S2031 20" Samsung SyncMaster 932BW 19" 
PowerCase
Seasonic S12G 750w Lian Li full tower 
CPUMotherboardGraphicsRAM
A10-5750m 3.5Ghz ASUStek A75M FCH HD 8650G + HD 8670M dual graphics 2x4GB Samsung 1600Mhz 
Hard DriveOptical DriveOSMonitor
Toshiba Q300 SSD 120GB yes Windows 8.1 Pro 15.6" 1920x1080 
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post #2 of 2
Thread Starter 
So I was on beta BIOS 1.42 and started to think it could be BIOS related because so many things have been with Ryzen.

I rolled back to official BIOS 1.40 but the issue persists. I also confirmed that the issue only takes a day to manifest. I restarted the machine after work yesterday. The next morning before work core0 is back to hanging out at 70-80% for no discernible reason.

I was going to try re-enabling SMT, but the BIOS version I rolled back to does not have the option.
 
ASUS R510DP
(8 items)
 
 
CPUMotherboardGraphicsRAM
AMD Ryzen 1700 ASRock Fatal1ty AB350 Gaming K4 (BIOS 1.42 beta) HIS 7870 IceQ 2x8GB G.Skill TridentZ 3200Mhz CL16 
Hard DriveHard DriveHard DriveHard Drive
Plextor 256GB SSD Toshiba X300 6TB Toshiba X300 6TB Toshiba 2TB 
CoolingOSMonitorMonitor
AMD Wraith Spire Windows 8.1 Pro x64 HP S2031 20" Samsung SyncMaster 932BW 19" 
PowerCase
Seasonic S12G 750w Lian Li full tower 
CPUMotherboardGraphicsRAM
A10-5750m 3.5Ghz ASUStek A75M FCH HD 8650G + HD 8670M dual graphics 2x4GB Samsung 1600Mhz 
Hard DriveOptical DriveOSMonitor
Toshiba Q300 SSD 120GB yes Windows 8.1 Pro 15.6" 1920x1080 
  hide details  
Reply
 
ASUS R510DP
(8 items)
 
 
CPUMotherboardGraphicsRAM
AMD Ryzen 1700 ASRock Fatal1ty AB350 Gaming K4 (BIOS 1.42 beta) HIS 7870 IceQ 2x8GB G.Skill TridentZ 3200Mhz CL16 
Hard DriveHard DriveHard DriveHard Drive
Plextor 256GB SSD Toshiba X300 6TB Toshiba X300 6TB Toshiba 2TB 
CoolingOSMonitorMonitor
AMD Wraith Spire Windows 8.1 Pro x64 HP S2031 20" Samsung SyncMaster 932BW 19" 
PowerCase
Seasonic S12G 750w Lian Li full tower 
CPUMotherboardGraphicsRAM
A10-5750m 3.5Ghz ASUStek A75M FCH HD 8650G + HD 8670M dual graphics 2x4GB Samsung 1600Mhz 
Hard DriveOptical DriveOSMonitor
Toshiba Q300 SSD 120GB yes Windows 8.1 Pro 15.6" 1920x1080 
  hide details  
Reply
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