Leif runs Linrad and is a code efficiency freak. He hand codes EVERYTHING in his system that is a hot spot. This note bears paying attention to.
---------- Forwarded message ---------- From: Leif Asbrink <[EMAIL PROTECTED]> Date: Nov 16, 8:50 pm Subject: Ubuntu 8.10 To: Linrad Hi All, The latest version of Ubuntu is extremely CPU hungry when used with X11. Just running the system monitor loads the CPU with 20%. Xorg, the X11 server uses 15% and the system monitor uses 4%. Debian unstable which has the same system monitor uses 6% for Xorg and 4% for the system monitor. Debian stable uses the older system monitor which is far less CPU hungry. It moves the curves horizontally step-wize and uses 4% for Xorg and only 1% for the monitor itself. The above numbers are for a 2.6GHz Pentium IV. The very high load caused by the X11 server may make it necessary to increase the output delay margin and to decrease the max DMA rate. I would recommend Ubuntu 8.04 or any other Linux distribution if you want to run Linrad under X11. In case you love Ubuntu 8.10 for some reason, download svgalib1925-1.tbz from here:http://www.sm5bsz.com/linuxdsp/install/ svgainst.htm The modified svgalib-1.9.25 package will compile under Ubuntu 8.10 Press Ctrl Alt F1 to get into terminal mode and run Linrad from there (do not forget sudo.) Ubuntu 8.10 runs at full speed With svgalib in terminal mode:-) 73 Leif / SM5BSZ _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
