Jump to content

System Stability Test Lowers DPC Latency (CPU Powersavings?)


yeeze

Recommended Posts

Hello all. Hope this is the right place to ask this. 

I found an interesting behavior, if you run a CPU stress test such as Aida64, your DPC latency goes down significantly (measured through LatencyMon).
On my system it goes from 0.27 > 0.16.
Not all stress tests do this, I've only found Aida64 and HeavyLoad to have this behavior.

This may be useful for real time tasks, games, audio, etc.

Anyone have a good idea or explanation of why this occurs?
Is this something that can be used without the stress test portion to improve DPC latency? I am guessing that the stress test possibly forces the CPU in a high performance state that shuts off some power saving features. But the question is - which ones?

For reference, I have the following:

-windows powerplan is maximized for performance using popular internet power plans
-all the hidden bios settings are tweaked as much as realistically possible using GRUB (C/P/T states off, eist/speedstep, me, etc)
-no core parking in Windows confirmed in taskmanager/corepark
-idle disabled

 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



×
×
  • Create New...