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boinc cause cpu throttling
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Author | Message |
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Send message Joined: 22 Nov 17 Posts: 11 |
Hello, i have weird problem, when BOINC is running my cpu frequency is dropping constantly in same intervals. I am using windows 10 64 bit and i have in bios enabled c states and turbo mode, because i have cheapeast mobo and i can't oveclock my cpu. Enabling turbo and c states in bios, increase my cpu frequency to 4,1GHZ surprisingly. In windows power management i disable idle saver, so my cpu runs constantly at c0 state, and i have set min cpu frequency 100%. This way i get my cpu running at 4,1ghz, instead of default 3,5, I dont know why boinc cause frequency drops to 2.6ghz for example, if i switch it off i have constantly 4,1ghz in any other application. In BOINC i have tried to set different cpu utilization setting and when i set 100% cpu cores and 100% cpu time, my frequency still drops. I don't know why BOINC does this makes no sense. EDIT: it was eist function in combination with turbo on, which allowed my cpu run at 4,1ghz, c states in bios wasnt needed, there are multiple options to turn on/off so, i found out about this by luck. I turned off c states in bios, now it runs constantly at 4,1ghz. NEVER MIND |
Send message Joined: 22 Nov 17 Posts: 11 |
No i was wrong, even i disable every throttling fucntion in bios, eist, thermal, c1, c6 and turbo and run cpu at default clock. I have set min frequency to 100% in power setting in windows. Boinc cause my cpu frequency is scaled to 1,7ghz for example, and have constantly these spikes. When i suspend boinc, it is gone. I don't care much, but this is not ideal for effective crunching, frequency constantly dropping. Don't know this is just me, or this bug is happening to other people too. Just letting you know... |
Send message Joined: 5 Oct 06 Posts: 5080 |
I can't think of any mechanism by which running BOINC (or more likely, the project science applications which use the CPU intensively and continuously) would cause throttling other than for thermal reasons - I don't think you can disable the ultimate safety overheat protection. Are you monitoring the CPU core temperatures at the same time as you are measuring frequency? |
Send message Joined: 22 Nov 17 Posts: 11 |
I have disabled thermal control in bios, which could do that. But no my cpu tempes are fine, i have very good cooler. I have cpu temp alert, highest cpu temp i measued on one of my cores was 66. Average 60. Plus this frequency drops happens, only when boinc is running. I think asteroids project might be doing that. I have no asteroids wus at the moments and it stopped. I will test it. |
Send message Joined: 20 Nov 12 Posts: 801 |
Are you using the Intel GPU integrated in the CPU package? |
Send message Joined: 22 Nov 17 Posts: 11 |
Not really :D Yes it is asteroids project. I just got new asteroids tasks and it started again. |
Send message Joined: 20 Nov 12 Posts: 801 |
Maybe you should try for example HWiNFO to see if the processor gives any reason for throttling. |
Send message Joined: 22 Nov 17 Posts: 11 |
There is none, i am running my cpu at 100% whole day and temps are at stable 60C. https://imgur.com/a/y8ori It doesn't happen in other applications, or when crunching other boinc projects. Currently it stopped even while crunching asteroids wu's. It seems like some wu's from asteroids caused it. I let them know about this bug. |
Send message Joined: 2 Jul 14 Posts: 186 |
That can't be a "bug" in Asteroids app or in any other project app. That problem has something to do with how your computer observes at the system level how it should respond to a given load. Any BOINC project apps don't have privileges to order anything about how the system will set CPU/memory/bus speeds. Those things are decided purely by the OS, bios and CPU. |
Send message Joined: 20 Nov 12 Posts: 801 |
There is also a Performance Limit Reasons section in HWiNFO. You'll obviously need to check them while the CPU is running at below maximum frequency. You might want to have HWiNFO log the CPU frequency just to make sure it's not some reporting bug in Windows Task Manager. |
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