Date: Mon, 7 Aug 2000 15:04:32 -0400 From: "Avery Fay" <afay@ultranet.com> To: <freebsd-questions@FreeBSD.ORG> Subject: silo overflows and line speed Message-ID: <007801c000a2$5395c4c0$2d01a8c0@ultranet.com>
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[-- Attachment #1 --] Hello, I just installed 4.1 and I have a few questions. When setting up my external US robotics 56k modem using the kernel/pppd implementation of ppp, I initially got silo overflow errors constantly. Even during authentication or pings I would get them and the web was unusable. I had the line speed for /dev/cuaa1 set to 115200 as I do on all the other os's i run (windows 98, 2000, 2 distros of linux, beOS). After lowering the line speed to 57600 everything works fine. My question is, shouldn't my serial ports which are 65550A's (I think that's right) be able to handle a line speed of 115200 without problems? Secondly, why am I only getting these problems in FreeBSD? I understand that the other OS's might not report these problems but whereas my modem in the other OS's is very usable in FreeBSD it slows to a crawl at the higher line speed. Oh, and by the way, I read through a bunch of archived emails and news postings to try to find the problem. I tried enabling dma on the hard drives and disabling usb stuff in bios. Both of which did not help. There were problems with old computers at higher line speeds under heavy load, but my computer is a celeron 333 and when i use top to look at load it is always near 0. Any suggestions? I would really like to get the higher line speed working because most documentation on setting up modems suggests it. Avery Fay [-- Attachment #2 --] <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" http-equiv=Content-Type> <META content="MSHTML 5.00.2614.3500" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Hello,</FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial>I just installed 4.1 and I have a few questions. When setting up my external US robotics 56k modem using the kernel/pppd implementation of ppp, I initially got silo overflow errors constantly. Even during authentication or pings I would get them and the web was unusable. I had the line speed for /dev/cuaa1 set to 115200 as I do on all the other os's i run (windows 98, 2000, 2 distros of linux, beOS). After lowering the line speed to 57600 everything works fine. My question is, shouldn't my serial ports which are 65550A's (I think that's right) be able to handle a line speed of 115200 without problems? Secondly, why am I only getting these problems in FreeBSD? I understand that the other OS's might not report these problems but whereas my modem in the other OS's is very usable in FreeBSD it slows to a crawl at the higher line speed. Oh, and by the way, I read through a bunch of archived emails and news postings to try to find the problem. I tried enabling dma on the hard drives and disabling usb stuff in bios. Both of which did not help. There were problems with old computers at higher line speeds under heavy load, but my computer is a celeron 333 and when i use top to look at load it is always near 0. Any suggestions? I would really like to get the higher line speed working because most documentation on setting up modems suggests it.</FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial>Avery Fay</FONT></DIV> <DIV> </DIV> <DIV> </DIV> <DIV> </DIV></BODY></HTML>
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