But this is a bug of the tool not of Windows 8bronxsound wrote:another thing is pretty high but constant dpc latency. from what i've read on the net (and it confirms my case) it's around 1000us regardless the setup.
http://www.thesycon.de/eng/latency_check.shtmlWindows 8 Compatibility: 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.