Hiya, list.
Think i've found a rather nasty bug in the kernel, and I need some clues
as to where to look for the issue.
Stats:
Quad Xeon (PIII core) 700mhz machine (1mb cache on each)
4gb RAM
5x36gb SCSI disks - on a DAC1100 RAID controller
3 EEPro 100 cards
The box functions as a database ser
This is *NOT* a kernel question. Take this kind of stuff elsewhere.
The reason? RPM is NOT meant to take any input, on installation of a
package. if you're trying to do that, you're doing it the wrong way.
Chad
On Wed, 6 Dec 2000, kouqian wrote:
> a program using getch() function (included in
> And which of the versions of 'which' would you rather people had. Do you want
> csh behaviour, tcsh behaviour, which non builtin BSD behaviour, which as alias
> trick behaviour, which as ksh behaviour..
>
> There is no standard which command.
Exactly why there will be 3 different overall behavi
> alias kwhich='type -path' in ~./bashrc should fix. I don't know
> why 'standard' Unix/sell/executable commands keep getting changed
> to GNUisms in distributions.
I've been asking that question ever since most popular distributions
started putting a copy of bash in /bin/sh.
WHY oh WHY would th
absolutely, they are.
They don't follow the same archaic I/O register mechanism, either. which
is *GOOD*.
(Just take a peak at the 16C854 sometime. You'll understand exactly how
archaic it can GET.)
Chad
> > macs and sun machines use z85c30 chips, so there are some non-16550 boxes
> > out ther
heh. yep.
Thats why I didn't list them.
z85's are good chips, but they perform JUST LIKE a 16550.
Chad
> On Thu, Dec 14, 2000 at 08:51:42AM -0600, Chad Schwartz wrote:
> > And what kind of serial ports do you find on your Alpha? 16550's! Your
> > PowerPC? 165
> > This is where a 654 or an 854 (I'm only listing startech design chips.
> > there are others that would do the job.) come in handy. They can pause
> > their transmitter WITH bytes in their fifo. (Automated hardware/software
> > flow control.)
>
> Indeed. Most chips I've seen are 1 16550, or pr
> > Heh...do what I did. Go on eBay and pick up a Hayes ESP card.
>
> Hmm.. High speed comm is fine here, as long is I use handshaking. If I
> don't, I'll loose chars.
there are many situations in which a 16550 is KNOWN to be overrunable, all
of which can occur in your common PPP connection.
Mo
You'll find that there is a problem with 2.2.12, on down - with losing a
few bytes here and there.
The bug is in the tty subsystem - in that when you pass off chars to the
ldisc - from the driver, the ldisc doesn't actually write them. (I could
get into the details, but you probably don't care.)
See, in an ideal world, that shouldn't be the case, at all.
Since we're NOT operating under the assumption that the serial console is
a modem, we should be - instead - operating under the assumption
that it is a 3-wire NULL connection. (thus, making NO assumptions about
the user's hardware..)
If
Unless of course you really DO have RTS/CTS (Or DTR-->CTS) flow control
turned on - on your terminal, and the terminal shuts off RTS (or DTR) to
indicate its fifo level is too high.
That *IS* useful.
but the ability to hard-code it in a shut-off state is *MUCH* better.
Chad
> On Tue, 5 Dec 200
> Nope, /dev/console *does* block. ATM I've found a quick workaround - I
> use "stty -F /dev/console clocal -crtscts" to turn off the serial flow
> control at the stawrt of /etc/rc.d/rc.sysinit - this seems to work quite
> well... of course it doesn't stop some program turning flow control back
>
> No, that only tells you the size of a long under the compiler you used.
> If you are on an Intel IA64 (64 bit kernel) but you compile with gcc
> for ix86 (32 bit userspace) then sizeof(long) is 4. IA64 runs both
> native and ix86 code, sizeof(any userspace field) tells you nothing
> about the k
int main(void) {
printf("Size of an unsigned long is %d bytes\n",sizeof(unsigned long));
return(0);
}
That simple program will tell you that an unsigned long is 4 bytes, or 8
bytes.
It is then a safe assumption - that if you get back '8', that you're
running a 64bit kernel, on a
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