Seems like my S3Virge is not the only card with problems. question to Richard: What X-Server ? XFree-3.x or XFRee-4.X or some commercial one I have seen jitter up to 50msec (without X maxium or 30usec) when running XFree-4.0.1 on with my S3Virge clone card. Disableing acceleration got the jitter down to the 30usec again. The IRQ disableing in XFree is only done in a few places and only for a clockprobe during startup, not when drawing anything. I replaced those functions in the source with NOP dummies and that did nothing. The current discusion (on the RT-linux list) seems to go in the direction of a PCI-bus lockingup for a short(several msecs) while. I am interested in hearing what kind of hardware you use (MB, CPU, RAM, etc.) and what X-Version. And just join the RT-Linux (also the home for RTAI discusions) at http://www.rtlinux.org/mailing_lists.html - Erwin Richard Spijkers wrote: > > Hi there, > > I am running kernel 2.2.17, RTAI 1.5 and the latest Nvidia driver and I > have discovered that RTAI isn't really realtime anymore. I tried to find > the problem and I think the Nvidia driver is disabling the interrupts. > This stalls the task switching mechanism in RTAI because the timer > interrupt isn't handled immediatly. > > Does anyone have the same problems? If yes, are there more drivers that > disable the interrupts for a long time? -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] --- For more information on Real-Time Linux see: http://www.rtlinux.org/rtlinux/
