Hi Les, High DPC latency is one of the things reported about Win8 in pre-release: http://social.technet.microsoft.com/Forums/en/W8ITProPreRel/thread/aa16c25a-9c72-4579-ba02-cea920296271
That info is pretty old (March?). I know some have reported using Win8/PowerSDR with success. Before going back to Win7 I would recommend trying to determine what is causing the high DPC count (Video driver? WiFi driver? Malware scanner?). That way you could watch for updates to the offending object in case you want to try Win8 again. Mike, N0SO On Oct 29, 2012, at 3:01 AM, "Les Keppie" <les...@skymesh.com.au> wrote: > Hi All > Have just upgraded from Windows 7 Ultimate to Windows 8 Pro > Computer is Asus m/b M4A78-VM - processor is 3.1g AMD Phenom(tm) II X2 550 > Processor Socket AM3 (938) > with 4g ram - radio is Flex 3000 > > This system has been running well on W7 ultimate with dpc count of less than > 100us normally around the 75us > Now with the upgrade to W8 Pro dpc is around 1000us > LatencyMon reports Current measured kernel timer latency around 12 to 16us > with Highest measured kernel timer latency as 1000 to 1009us > Transmitting using EasyPal gives regular breaks in tx audio with receiving > station reporting no lock on signal > > Anyone got any ideas on how to reduce the dpc spikes or will it be a trip > down the W7 reinstallation path??? > _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
