SIO Overflows in -Current
Is there any way to eliminate (or reduce) the SIO serial overflows that seem to occu often on several FreeBSD systems that I have. It seems to limit remote kernel debugging to about 19.2 Kbaud.. Thanks, -- Glenn Gombert [EMAIL PROTECTED] Never trust any operating system you don't have the source code for -- http://fastmail.fm - Consolidate POP email and Hotmail in one place To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
sio overflows
Hi! So, I've recompiled my Kernel, and if I connect to the internet, my console is flooded by lots of sio overflows(on sio1), and my connection is very slow. My Modem(Elsa Microlink 56k internet) is on com2. Who can help me ? Thx in advance, Georg Funk To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
Re: sio overflows
Georg Funk wrote: I've recompiled my Kernel, and if I connect to the internet, my console is flooded by lots of sio overflows (on sio1), and my connection is very slow. They're probably silo overflows; silo (a word which refers to a tall, cylinder-shaped building for storing grain on a farm) is one name for the input buffer of a serial I/O chip (another name is FIFO, an acronym for First In, First Out). Anyway . . . a few questions about your setup: Are you using a serial cable that is set up to use hardware (CTS/RTS) flow control? Is your modem configured to use hardware flow control? If the answer to either of these questions is no, then you aren't using hardware flow control (even if you thought you were), and you are =very= likely to lose data. Fix the cable and/or modem settings. Is your serial port (sio1) identified as a 16550A (the A suffix is very important here) when FreeBSD starts up? If not, then you're at risk of losing data at high communication rates (especially if your computer is not extremely fast). Get a new serial card with 16550A support. Are you running the X Window System (XFree86) on the same computer while you are connected to the Internet? If so, which version? Does the serial I/O problem go away if you get out of X and work directly with the plain-text console? There is a known problem with serial I/O and version 4 of XFree86 -- though this problem doesn't seem to exist with the XFree86 version (3.3.6) that is included by default in FreeBSD. If you are using XFree86-4 and aren't willing to go back to version 3.3.6, there may be a workaround for the serial I/O problem; go to http://www.FreeBSD.org/cgi/query-pr.cgi and look up PR #26261 for more details. Rich Wales [EMAIL PROTECTED] http://www.webcom.com/richw/ To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
sio overflows of some kind?
Hrmmm for some strange reason since I cvsupped a few days ago, Ive been getting strange messages on my consoles every time I move my mouse, something to the effect of: May 2 09:53:04 main /kernel: sio0: 103 more tty-level buffer overflows (total 902) Anyone got any ideas what this is? Cheers Andrew To Unsubscribe: send mail to majord...@freebsd.org with unsubscribe freebsd-current in the body of the message
Re: sio overflows of some kind?
I have seen silo overflows on my serial port when I am using user mode ppp when using a PS/2 mouse and moused. Whilst downloading a large file I was able to cause multiple sio silo overflows by moving the mouse. I have stopped using moused since then (because of this) and can now download large files without problem but can still cause my serial ports to be unusable (requiring a reboot) if I run MAME first (before getting on the net) or while I am on the net. I can still use a PS/2 mouse, just not with moused, so XFree86 is using the mouse directly now instead of /dev/sysmouse. See my recent messages to freebsd-current entitled silo overflows in CURRENT ... some info that may help vortexia wrote: Hrmmm for some strange reason since I cvsupped a few days ago, Ive been getting strange messages on my consoles every time I move my mouse, something to the effect of: May 2 09:53:04 main /kernel: sio0: 103 more tty-level buffer overflows (total 902) Anyone got any ideas what this is? Cheers Andrew To Unsubscribe: send mail to majord...@freebsd.org with unsubscribe freebsd-current in the body of the message -- /===\ | Work: matthew.th...@dsto.defence.gov.au | Home: thy...@camtech.net.au | \===/ If it is true that our Universe has a zero net value for all conserved quantities, then it may simply be a fluctuation of the vacuum of some larger space in which our Universe is imbedded. In answer to the question of why it happened, I offer the modest proposal that our Universe is simply one of those things which happen from time to time. E. P. Tryon from Nature Vol.246 Dec.14, 1973 To Unsubscribe: send mail to majord...@freebsd.org with unsubscribe freebsd-current in the body of the message
