>
> We're seeing it with our ppp link, which uses the kernel level ppp
> code. Since it doesn't happen for me often, it is hard to diagnose.
>
You could set up a 486 (386?) and have it chew on a tonne of ipfw rules.
If it is due to ipfw load, you should be able to force the problem to be
reprod
In message <[EMAIL PROTECTED]> Mike Smith writes:
: Yup. Ignore the "problem in the application" part, as that predicates
: that the kernel and driver are working properly, which doesn't seem to be
: the case. The problem here is that the buffer between the top side of
: the driver and the app
In message <[EMAIL PROTECTED]> Mike Smith writes:
: Growing the buffer isn't the solution; it should be big enough already.
: We need to work out why a system that should have no trouble with the
: data rate in question is croaking so trivially.
Growing the buffer is a solution. I only get a
> >
> > > Er, you should read the sio(4) manpage too. tty-level buffer overflows
> > > have nothing to do with interrupt latency/execution time.
> >
> > You mean this:
> >
> > sio%d: tty-level buffer overflow. Problem in the application. Input has
> > arrived faster than the give
> In message <[EMAIL PROTECTED]> Mike Smith writes:
> : It's documented in the sio(4) manpage, which is always worth reading.
>
> Even reading the sio manpage is unclear. All it says is that things
> are too slow. Steady state I don't get these, just every now and
> again it happens. No appare
>
> > Er, you should read the sio(4) manpage too. tty-level buffer overflows
> > have nothing to do with interrupt latency/execution time.
>
> You mean this:
>
> sio%d: tty-level buffer overflow. Problem in the application. Input has
> arrived faster than the given module could pr
> In message <[EMAIL PROTECTED]> Matthew Jacob
>writes:
> : Normally I might agree with this, but I use a tty line on a 150Mhz i386 to
> : be a serial console for another freebsd box. This is a NS16550A with a 16
> : byte fifo. This systems is effectively idle except for this task. So, I'm
> :
In message <[EMAIL PROTECTED]> Matthew Jacob
writes:
: Normally I might agree with this, but I use a tty line on a 150Mhz i386 to
: be a serial console for another freebsd box. This is a NS16550A with a 16
: byte fifo. This systems is effectively idle except for this task. So, I'm
: running tip a
> Er, you should read the sio(4) manpage too. tty-level buffer overflows
> have nothing to do with interrupt latency/execution time.
You mean this:
sio%d: tty-level buffer overflow. Problem in the application. Input has
arrived faster than the given module could process it and som
> > Dec 2 11:08:56 bifrost /kernel: sio0: 208 more tty-level buffer overflows (total
>3356)
> >
> > is appearing on our ppp machine. What are tty-level buffer overflows?
> > How can I fix this? What resource is running out?
>
> Is it safe to assume that this isn't happening on a laptop? At
On Fri, 3 Dec 1999, Warner Losh wrote:
> What I was wondering is if there is a way to, say, double the buffer
> size. Also, what is the number of overflows mean? Is that bytes?
> clists? 16byte chunks? The overflow seems to happen just once and it
It's the return from b_to_q, so it is the nu
> Dec 2 11:08:56 bifrost /kernel: sio0: 208 more tty-level buffer overflows (total
>3356)
>
> is appearing on our ppp machine. What are tty-level buffer overflows?
> How can I fix this? What resource is running out?
Is it safe to assume that this isn't happening on a laptop? At least
with t
In message <[EMAIL PROTECTED]> Mike Smith writes:
: It's documented in the sio(4) manpage, which is always worth reading.
Even reading the sio manpage is unclear. All it says is that things
are too slow. Steady state I don't get these, just every now and
again it happens. No apparent correlati
> On Thu, 2 Dec 1999, Warner Losh wrote:
>
> >
> > Dec 2 11:08:56 bifrost /kernel: sio0: 208 more tty-level buffer overflows (total
>3356)
> >
> > is appearing on our ppp machine. What are tty-level buffer overflows?
> > How can I fix this? What resource is running out?
>
> If I remember p
On Thu, 2 Dec 1999, Warner Losh wrote:
>
> Dec 2 11:08:56 bifrost /kernel: sio0: 208 more tty-level buffer overflows (total
>3356)
>
> is appearing on our ppp machine. What are tty-level buffer overflows?
> How can I fix this? What resource is running out?
If I remember properly, it is a r
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