Date: Thu, 05 Mar 1998 13:41:44 +1000 From: Stephen McKay <syssgm@dtir.qld.gov.au> To: Simon Shapiro <shimon@simon-shapiro.org> Cc: current@FreeBSD.ORG, syssgm@dtir.qld.gov.au Subject: Re: silo overflows (Was Re: 3.0-RELEASE?) Message-ID: <199803050341.NAA08541@troll.dtir.qld.gov.au>
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Simon Shapiro wrote: > > How about getting rid of that ``%d more silo overflow..'' message? I am > too limited in my understanding device drivers to see why that happens. > I though that UARTs and RS-232C were well understood. Do you have a Matrox Millennium? I borrowed a Matrox Millennium II for a while and put it in my Pentium 133 box. Suddenly I got silo overflows when there was simultaneous incoming serial data and X activity (like scrolling a 60 line xterm window). When I returned the Millennium and put my Trio64V+ card back in, all serial problems disappeared. At the time, I was running the serial port at only 38400, but now run it at 115200 with no problems. I didn't do enough investigation to even guess at the cause. I looked in the XFree86 server code for interrupt disabling but found nothing interesting. I was wondering though if any PCI experts knew if a PCI video card could starve the PCI-ISA bridge of cycles. Any experts out there? Stephen. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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