Hi all,
In -current and -stable, mountmsdosfs() doesn't not check if
pm_nxtfree exceeds the max cluster in the file system. So if a corrupted
msdos filesystem(which is not uncommon) is written, the following code
in updatefats()@msdosfs_fat.c will generate an unpleasure panic. :)
u_long
On Sat, Jun 30, 2001 at 05:47:49AM +, E.B. Dreger scribbled:
| 1. Is AIO SMP-safe?
AIO is not safe, SMP or not.
| 2. If not, how could one force coherency? (Read and rewrite locked
|a word from each cache line?) Is it worth the effort, or should
|one not use AIO across process boun
Quick question(s):
1. Is AIO SMP-safe?
2. If not, how could one force coherency? (Read and rewrite locked
a word from each cache line?) Is it worth the effort, or should
one not use AIO across process boundaries?
I'm asking primarily about 4.x, unless anyone has good guesses of
how 5.x
> Date: Fri, 29 Jun 2001 21:44:43 -0500
> From: Michael C . Wu <[EMAIL PROTECTED]>
>
> The issue is a lot more complicated than what you think.
How so? I know that idleproc and the new ipending / threaded INTs
enter the picture... and, after seeing the "HLT benchmark" page, it
would appear that
if I wish to use Kgdb, I build the kernel with the following set of steps from
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-building.html
Since I make my own modifications to the source code I do the following
Change to the /usr/src directory
# cd /usr/src
Compile
On Fri, Jun 29, 2001 at 09:14:06PM +, E.B. Dreger scribbled:
| > Date: Fri, 29 Jun 2001 13:14:58 -0700
| > From: Matthew Rogers <[EMAIL PROTECTED]>
The issue is a lot more complicated than what you think.
This actually is a big issue in our future SMP implementation.
There are two types of p
On Fri, 29 Jun 2001, Terry Lambert wrote:
> "E.B. Dreger" wrote:
> If you "need" kernel threads, look at the Linux kernel
> threads in the ports collection (it's a kernel module
> that builds and installs as a package). You probably
> don't, since performance of kernel threads is really only
>
> Date: Fri, 29 Jun 2001 13:14:58 -0700
> From: Matthew Rogers <[EMAIL PROTECTED]>
>
> Why not just use First in line, Next processor available ? Then you
> wouldn't care what processor did which task.
That was my question: Would the added complexity of "CPU affinity
hinting" be worth the reduc
(Personal CCs trimmed; back to Bernd and cross-posting -smp and -hackers)
> Date: Fri, 29 Jun 2001 21:18:18 +0200
> From: Bernd Walter <[EMAIL PROTECTED]>
> > Passing a token between threads. When a thread has the token, it may
> > assert a lock or a mutex on an object. Again, I subscribe to t
On Fri, Jun 29, 2001 at 06:44:29PM +, E.B. Dreger wrote:
> > Date: Fri, 29 Jun 2001 20:33:51 +0200
> > From: Bernd Walter <[EMAIL PROTECTED]>
> >
> > I can't see how you make shure that on SMP systems all CPUs have
> > the same meaning from memory content.
> > Normaly you would use a mutex or
> Date: Fri, 29 Jun 2001 20:33:51 +0200
> From: Bernd Walter <[EMAIL PROTECTED]>
>
> I can't see how you make shure that on SMP systems all CPUs have
> the same meaning from memory content.
> Normaly you would use a mutex or similar before accessing a data range
> from another thread which also e
On Fri, Jun 29, 2001 at 03:44:03PM +, E.B. Dreger wrote:
> Again, I am *not* using pthreads. Worker thread = totally separate
> process, created via rfork(2). One process blocks, others continue
> running.
I can't see how you make shure that on SMP systems all CPUs have
the same meaning fro
> > With the current license, this won't be installed as part of the base
> > kernel. (GPL and/or LGPL)
>
> I understand it'll continue to be a port. Am I hearing that it is
> unacceptable even as a temporary solution because of the license ?
>
> > It's been answered time and time again over th
(Cross-posting again... I'm willing to be larted with a herring if this is
unacceptable for the content presented.)
I was thinking about CPU affinity on SMP systems the following is
on-list brainstorming.
Take a two-way box running 10 httpd and 10 smtpd processes. Assuming
equal CPU time re
On Fri, Jun 29, 2001 at 09:05:25AM -0600, Nate Williams wrote:
> With the current license, this won't be installed as part of the base
> kernel. (GPL and/or LGPL)
I understand it'll continue to be a port. Am I hearing that it is
unacceptable even as a temporary solution because of the license ?
> Date: Fri, 29 Jun 2001 18:33:52 +0300
> From: Peter Pentchev <[EMAIL PROTECTED]>
>
> > > The threads scheduler is in user space. It converts a
> > > blobking call into a non-blocking call plus a context
> > > switch. THus blocking _IS_ a problem.
> >
> > Bad wording on my part again; perhaps
On Fri, Jun 29, 2001 at 03:19:47PM +, E.B. Dreger wrote:
> > The threads scheduler is in user space. It converts a
> > blobking call into a non-blocking call plus a context
> > switch. THus blocking _IS_ a problem.
>
> Bad wording on my part again; perhaps "a problem that I [think
> that] I
thank you - this was helpful. One last question - when you say that
bridging cannot work with wi cards because they do not support promiscuous
transmission, this makes me wonder two things:
1. Do you mean the wi driver does not support this, or you mean the actual
physical card itself is lim
(Warning: rather long message)
> Date: Fri, 29 Jun 2001 00:50:30 -0700
> From: Terry Lambert <[EMAIL PROTECTED]>
>
> [ ... wrapped fd using functions in libc_r ... ]
[ fd locking, to prevent chopping feet from beneath ]
As-needed serialization to prevent breakage = "proper" behavior.
I should
[ It would have been helpful to have a one-line description of what NGPT
is at the top of this, rather than requiring the folks to go to a URL. ]
> - The main point of this port is to have a reasonable native freebsd
> pthread implementation till the scheduler activations stuff is ready.
With
On Fri, Jun 29, 2001 at 10:55:39AM -0400, [EMAIL PROTECTED] wrote:
> In a message dated 6/28/01 11:16:31 PM Eastern Daylight Time,
> [EMAIL PROTECTED] writes:
>
> > Really? Have you even looked at the net4501 board which was mentioned?
> It's
> > a single-board computer constructed for some
In a message dated 6/28/01 11:16:31 PM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
> Really? Have you even looked at the net4501 board which was mentioned?
It's
> a single-board computer constructed for some specific communication
> applications, with no VGA or keyboard support, or spi
Jason Borkowsky wrote:
>
> > (77 ~): gcc -o serialioctl serialioctl.c
> > (78 ~): sudo ./serialioctl
> > Password:
> > Current Serial Settings: Ring RTS DTR DSR
> > Current Serial Settings: Ring DSR
> > (79 ~): uname -a
> > FreeBSD Nausicaa.mitre.org 4.3-RC FreeBSD 4.3-RC #2: Tue Apr 10 10
Nicolai Petri wrote:
>
> Hi hackers,
>
> I've used some time writing a custom natd like daemon which makes som
> speciel packet processing.
> One of the issues with the natd approach is the large amount of
> context-switches it gives.
> This can be a real performance problem on very loaded netwo
Jason Borkowsky wrote:
>
> > > I am looking to find a simple way to control a serial port through BSD
> > > (such as raising and lowering DTR for a specified duration). I thought I
> > > had it using ioctl() and wrote a simple program to test it, but it seems I
> > > don't have a full understandi
On Fri, 29 Jun 2001, Nicolas Souchu wrote:
> On Thu, Jun 28, 2001 at 07:48:21PM +0100, Doug Rabson wrote:
> > On Thu, 28 Jun 2001, Nicolas Souchu wrote:
> >
> > > Hi folks,
> > >
> > > I have a char driver that must be opened by more than one process. The minor
> > > index is not sufficient for t
Hi,
Six million *.rpm files later, I've finally got the Linux version of
Mozilla working properly. However, neither the Linux versions of Mozilla
or Opera seem to be able use my PPP connection - they simply can't
connect to anything, even when I'm fully connected and browsing using
the FreeBSD ve
rod person wrote:
> here is my ppp.conf. also try using ppxp from the ports, which is
what I use in X.
> either way I have no problems
>
> Rod
My ppp.conf file is pretty much identical to yours, the only difference
being that I don't have the "ident user-ppp VERSION (built
COMPILATIO
rod person wrote:
> here is my ppp.conf. also try using ppxp from the ports, which is
what I use in X.
> either way I have no problems
>
> Rod
My ppp.conf file is pretty much identical to yours, the only difference
being that I don't have the "ident user-ppp VERSION (built
COMPILATIONDAT
On Thu, Jun 28, 2001 at 07:48:21PM +0100, Doug Rabson wrote:
> On Thu, 28 Jun 2001, Nicolas Souchu wrote:
>
> > Hi folks,
> >
> > I have a char driver that must be opened by more than one process. The minor
> > index is not sufficient for this. Is there any process private data (void *)
> > in th
On Thu, Jun 28, 2001 at 10:32:50PM +0200, Dag-Erling Smorgrav wrote:
> Wes Peters <[EMAIL PROTECTED]> writes:
> > The description there isn't very forthcoming. fastforwarding caches
> > the results of a route lookup for destination addresses that are not
> > on the local machine, and uses the cac
http://freshmeat.net/projects/ngpt
http://www.sharma-home.net/~adsharma/projects/freebsd/ngpt-1.0.0-freebsd.tar.gz
Notes:
- The project has gotten more Linux specific since the last port (0.9.4)
There are a lot of ugly hacks that need cleanup.
- Please commit 27489 to help this port
- There we
vinu pattery wrote:
>
> Could some body let me know, how to hack the FReeBSD kernel
> to learn the exact sequence of steps which happen when the
> device driver interrupts the FreeBSD Kernel for resources.
> Is there a trace debugger available, with which i can find
> out the steps.
It's not cle
"E.B. Dreger" wrote:
[ ... wrapped fd using functions in libc_r ... ]
> So it's a thunk/kludge not only to enforce "proper"
> behavior, but also to prevent the process from blocking
> and stalling other threads? This makes sense.
It also permits locks on the descriptors, to ensure
that one thr
Drew Eckhardt wrote:
>
> In message <[EMAIL PROTECTED]>, [EMAIL PROTECTED] writes:
> >Hi folks,
> >
> >I have a char driver that must be opened by more than one
> >process. The minor index is not sufficient for this. Is
> >there any process private data (void *) in the devfs
> >structure (or the
35 matches
Mail list logo
