Hi Alan I don't think the 3DConnexion device is a logitech so it sounds like you don't have the config I was talking about but instead have the one I recommend.
You might google for a program called processhacker.exe and run it while you are running your PSDR setup. It acually has an entry for DPCs in the display and color codes those processes that are grabbing a lot of resources. You might luck out and see what pops in and out when you see the 7000us spike which will provide more to investigate. One other type of software I avoid is the video card display managers (like ATI's Catalyst, etc). These things are almost as onerous as Logitech stuff and again you just need the drivers, Windows can manage the rest unless you are a gamer and want to overclock the GPU, etc. 73 Neal Campbell Abroham Neal Software www.abrohamnealsoftware.com (540) 645 5394 NEW PHONE NUMBER Amateur Radio: K3NC Blog: http://www.abrohamnealsoftware.com/blog/ DXBase bug reports: email to [email protected] Abroham Neal forums: http:/www.abrohamnealsoftware.com/community/ On Sat, Feb 13, 2010 at 4:40 PM, Alan NV8A <[email protected]> wrote: > On 02/12/10 01:52 pm, Neal Campbell wrote: > > This is purely an observation so I am not reporting this as pure fact, but >> every system that I try to help people with who have unexplained and >> intermittent DPC bursts all have Logitech software installed. I am not >> stating this is the cause of these events, but I personally find Logitech >> software to be so obnoxious and naggy that it would not surprise me at all >> if it is a problem. It is constantly calling home to tell you wonderful >> things about Logitech and nagging you. My advice, based on observation, >> not >> fact, is to just let Windows find the device driver for your logitech >> devices and stay away from Logitech desktop, messenger, control center, >> etc. >> If you are using their webcams, look for free software to provide web >> access, etc. They rank above Apple Quicktime as the most unfriendly >> software >> (and that is a tough award to win). >> > > That is interesting. I have a Logitech cordless trackball, but AFAIK I have > only generic drivers for it. The other Logitech device is the 3DConnection > Space Navigator, which does nothing unless the device-specific software is > running. AFAIR, it has notified me of updates only after I have rebooted the > machine, but maybe it does "call home" from time to time without my > knowledge. > > My computer is a home-brew AMD dual-core @ 2GHz on an Asus A8N-E > motherboard (nVidia nForce 430 chipset) with 3GB RAM and the Startech > FireWire card you recommended -- on its own unshared IRQ. I use AlacrityPC > to disable every service and app. that I don't know that I need. > > I have a wired network connection. > > With nothing but DPCLat running, the DPCs run from approx. 10 to 70. Once I > start PB-PAL and DDUtil the DPCs run from approx. 20 to 200 most of the > time, but once in a while there will be a spike of as high as 7000 or more. > But with the driver running in Safe Mode 1 everything usually continues > without having to restart PowerSDR. > > Perhaps specific motherboard chipsets give rise to more sever DPCs? > > 73 > > Alan NV8A > _______________________________________________ FlexRadio Systems Mailing List [email protected] 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.flex-radio.com/ Homepage: http://www.flex-radio.com/
