tim --- On Tue, 6/1/10, Tim Ellison <[email protected]> wrote:
From: Tim Ellison <[email protected]> Subject: RE: [FlexEdge] whither 'safe modes' ? To: "dan edwards" <[email protected]>, "flex edge" <[email protected]> Date: Tuesday, June 1, 2010, 6:27 PM I wouldn't go as far as to say "shut up" but you should be happy that you have it working on a laptop. You know, the old saying "don't look a gift horse in the mouth" :-) ------------kinda the response i expected......though the cpu IS an intel T-7200, 2 ghz, 4 megs L-2 cache...well above the benchmark '800' number...------------ Not knowing exactly what you are expecting from "making a difference", I can't say if changing process priority makes a difference. Setting it to a too high of a level (real time) can cause real problems for the operating system itself if the PC hardware is not robust enough to handle it (process priority is not a "silver bullet"). -----------just for the heck of it, i tried 'real time'...seemed to play just fine...but still could not lower audio buffers to 512 or less...----------- I personally do not mess with, nor have I ever needed to change the process priority from the default of normal to get PowerSDR to work. -----------i thought i wanted the buffers nice and short to minimize latency, and make the filter skirts nice and tight...the desktop cranks along at 256, no sweat....---------- In regards to SafeModes, they are different levels of "latency recovery" that the Firewire driver uses to deal with long waits from excessive or long duration DPCs. The purpose of SafeModes is to ensure that the audio streams are not interrupted during times of long system latency events. Since you have relatively low DPC latencies, I would not expect much difference changing from the default SafeMode 1 to a higher SafeMode level. --------------only other thing i can think of is to disable one of the usb hub ports that seems to share an interrupt with the 1394a....though it didnt make any difference in the past...then there's that registry hack i saw a while back to load part of the OS in ram ( i think...)... 73, w5xz, dan -Tim -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of dan edwards Sent: Tuesday, June 01, 2010 1:29 PM To: flex edge Subject: [FlexEdge] whither 'safe modes' ? ok, i put psdr 2 on my laptop. win 7 home 32 bit. ibm T-60. ti-chipset express firewire card. 4gb ram. dpc's under 200 uS. with ethernet internet. 800 usec spikes every 10 sec with wireless internet....but it runs anyway !! found i had to run the audio buffers up to 1024 to get received audio to sound 'clean'. with EITHER internet connection... if i start the 8028 firewire driver software, i see i still have choices of normal, safe mode 1, 2, and 3...but i dont seem to have access to the various modes from inside PSDR 2. even fiddled a bit with 'process priority'...didnt make much difference. what am i missing? or "shut up and just be happy it's running" ?? 73, w5xz dan _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using alpha and beta versions of the software. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using alpha and beta versions of the software.
