Can any Win8 users test out your DPC latency for me

I was reading what people have been experiencing when testing out DPC latency in Win 8 and found an interesting post on page 3 of this forum.
http://forums.anandtech.com/showthread.php?t=2250925&page=3

Someone said
Enter this command in an elevated command prompt, reboot, and see if it helps:

bcdedit /set disabledynamictick yes

What it will do is stop Windows from coalescing CPU clock ticks when idle, a feature added in Windows 8 for power savings.

Can any of you 9ers who are running the final Win8 test your DPC latency and report them here?
Both using the default settings AND after setting "disabledynamictick" to yes and restarting.

dpclat.exe is the easiest way to get a simple graph and an indication of how good your computer is for working with audio apps that rely of low buffer settings.
http://www.thesycon.de/deu/latency_check.shtml
This is what I used to figure out that one of my Ethernet adapters was messing with the smooth operation of music software on my computer. I ended up using the other Ethernet port instead and it's fine now.

http://www.resplendence.com/latencymon can give you some information about the performance of you Win8 machine too.

Decent latency is incredibly important when it comes to making music or anything that uses ASIO drivers and small-ish buffer settings.

There are websites dedicated to iOS music software and I've even seen special issues of magazines about them. If Win8 machines can't provide users with usable performance even in Win8 Pro in Desktop Mode I can't see anyone interesting in making music with touch enabled devices bothering with a Win8 tablet.

@dentaku: Note the comment on the website for dpclat:

"The DPC latency utility runs on Windows 8 but does not show correct values. The output suggests that the Windows 8 kernel performs badly and introduces a constant latency of one millisecond which is not the case in practice. DPCs in the Windows 8 kernel behave identical to Windows 7. The utility produces incorrect results because the implementation of kernel timers has changed in Windows 8 which causes a side effect with the measuring algorithm used by the utility. Thesycon is working on a new version of the DPC latency utility and will make it available on this site as soon as it is finished."

So any suggestion that DPC latency in Windows 8 is problematic is far more likely to be a failure in the measurement process than an accurate reflection of what is actually happening.

Wow Andy. I didn't know that.
I guess the true test would be to install Windows 8 and test out a giant Kontakt instrument of some sort like LA Scoring Strings and see how well it compares to Windows 7 using the same buffer size.

5 hours ago, AndyC wrote

@dentaku: Note the comment on the website for dpclat:

"The DPC latency utility runs on Windows 8 but does not show correct values. The output suggests that the Windows 8 kernel performs badly and introduces a constant latency of one millisecond which is not the case in practice. DPCs in the Windows 8 kernel behave identical to Windows 7. The utility produces incorrect results because the implementation of kernel timers has changed in Windows 8 which causes a side effect with the measuring algorithm used by the utility. Thesycon is working on a new version of the DPC latency utility and will make it available on this site as soon as it is finished."

So any suggestion that DPC latency in Windows 8 is problematic is far more likely to be a failure in the measurement process than an accurate reflection of what is actually happening.

You can always download the Win8 trial and install it to a VHD. No need to partition anything, you run on the metal and you can do all the tests you need.

I have multiple hard drives so I prefer installing OSes onto another drive while the others are disconnected to avoid software bootloaders being installed and master boot records being messed with. I then use my motherboards built in drive selector when I start to choose the OS.

I just wanted to know what experience other people where having on hardware meant for Win8 like touch enabled laptops and slates. My desktop system really doesn't represent the hardware that most people are going to use Win8 on.

8 hours ago, PaoloM wrote

You can always download the Win8 trial and install it to a VHD. No need to partition anything, you run on the metal and you can do all the tests you need.