Linux-Development-Sys Digest #788, Volume #7 Thu, 20 Apr 00 06:16:31 EDT
Contents:
Re: Problem with kernel module.../proc/<pid> ("Bernard Beauchamp")
Re: Obtaining Program Counter ([EMAIL PROTECTED])
Re: Debuger for Linux (James Cownie)
Re: How to increase descriptors of client socket (Anand Krishnamoorthy)
Re: Linux loses packets (Anders Larsen)
How do you ascertain the number of bytes to read of a packet? ([EMAIL PROTECTED])
Re: Obtaining Program Counter (James Cownie)
porting.... ([EMAIL PROTECTED])
LIMITS OF LINUX.........PLEASE HELP (Ekta Agarwal)
Re: binutils, missing objdump options and linux 2.0.36+ (M Sweger)
Re: Where can I find kernel debuger? ([EMAIL PROTECTED])
Where does IDE irq really applied PIC? ("Lee,Sang-Yong")
Re: Read combining on memory-mapped I/O? (Juergen Fischer)
Packet reception on virtual interface (Emmanuel Chaput)
Re: MICROSOFT IT THRU! MICROSOFT IS THRU! (Ulisses Montenegro)
Re: LIMITS OF LINUX.........PLEASE HELP ([EMAIL PROTECTED])
Re: Obtaining Program Counter ([EMAIL PROTECTED])
Re: linux pthreads problem on dual processor machine (Peter Mortensen)
Re: Overlay filesystem (aka union, translucent, inheriting)? (Marc SCHAEFER)
Re: ppp modules (Robie Basak)
Re: Debuger for Linux ("Stephen Kennedy")
Re: LIMITS OF LINUX.........PLEASE HELP (Mario Klebsch)
Re: PCI Modem ("Albert")
modules (greg)
----------------------------------------------------------------------------
From: "Bernard Beauchamp" <[EMAIL PROTECTED]>
Subject: Re: Problem with kernel module.../proc/<pid>
Date: Wed, 19 Apr 2000 08:06:10 GMT
There is no EXPORT_SYMBOL for pidhash (nor for task[]).
Therefore find_task_by_pid() cannot be used from a module.
You will have to find another way to scan the task chain.
One way would be to try to locate &init_task.
Bernard Beauchamp
<[EMAIL PROTECTED]> a �crit dans le message :
8dji9h$iu2$[EMAIL PROTECTED]
> Hi,
>
> I am creating a kernel module that adds a file to the /proc/<pid>. Here
> is my file declaration.
>
>
> static struct proc_dir_entry proc_pid_ckpt =
> { 0, 9, "ckpt_info", S_IFREG | S_IRUGO, 1, 0, 0, 0,
> &Inode_Ops_4_Our_Proc_File, NULL, &our_pid_fill_inode, };
>
> This is what I believe I need to create a file called ckpt_info under
> the pid directory for every pid. The function our_pid_fill_inode I took
> straight from the kernel source. This is given as below.
>
> This compiles just fine. But when I do the insmod, I get the following
> error:
> ./cmodule.o: unresolved symbol pidhash
>
> I tracked the pidhash to being defined in <linux/sched.h>, which is
> included.
>
> Please help. Thanks.
>
> Usman
>
>
>
> /*
> * The fill argument is non-zero when the inode is being filled ...
> * we don't need to do anything when it's being deleted.
> */
> static void our_pid_fill_inode(struct inode * inode, int fill)
> {
> struct task_struct *p;
> int pid = inode->i_ino >> 16;
> int ino = inode->i_ino & 0xffff;
>
> read_lock(&tasklist_lock);
>
>
> if (fill && (p = find_task_by_pid(pid)) != NULL) {
> uid_t uid = 0;
> gid_t gid = 0;
> if (p->dumpable || ino == PROC_PID_INO) {
> uid = p->euid;
> gid = p->egid;
> }
> inode->i_uid = uid;
> inode->i_gid = gid;
> }
> read_unlock(&tasklist_lock);
> }
>
>
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
>
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: Obtaining Program Counter
Date: 19 Apr 2000 08:19:13 GMT
Anand Krishnamoorthy <[EMAIL PROTECTED]> wrote:
> Thomas van Gulick wrote:
>
>> Is it possible to get the value of the PC for a certain task? I'd like to be
>> able to get the PC or IC from a task that has stalled.
>
> The task structure of any task contains the register set for that task, stored
> in a structure called the "thread struct". That should contain the EIP which is
> the PC you are referrning to.
But how can I get the task struct for a certain pid?
Thomas
--
------------------------------
From: James Cownie <[EMAIL PROTECTED]>
Subject: Re: Debuger for Linux
Date: Wed, 19 Apr 2000 08:19:07 GMT
nightstalker wrote:
>
> Igor wrote:
>
> > Hi All!!!
> > I am a solaris programmer.
> > I installed recently Linux at home computer.
> > Is there some debugger like dbx in linux for c++.
> > Or may be there is some IDE for graphic environment.
> > There is nothing in man about it.
> >
> > Thanks
> >
> > Igor
>
> for console : gdb (gnu)
> for x : ddd (gdb frontend .. search for it on www.freshmeat.net )
Or, if you want to spend money and have a need to debug threaded code,
distributed code, MPI code, OpenMP code and so on, then you should look
at our TotalView product (http://www.etnus.com).
Free demo licenses are available.
-- Jim
James Cownie <[EMAIL PROTECTED]>
Etnus, Inc. +44 117 9071438
http://www.etnus.com
------------------------------
From: Anand Krishnamoorthy <[EMAIL PROTECTED]>
Subject: Re: How to increase descriptors of client socket
Date: Wed, 19 Apr 2000 14:48:35 -0400
==============9F46855614B69C50BF563EF2
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DOn't know if this will be useful.. There is some useful info in an earlier
post by another member of this newsgroup, which I had saved... Check it
out...
Anand
If you're using PAM (password authentications modules IIRC, which
happens to be used in later Redhat distros), then you may need to do a
bit more work. If you're using PAM you probably have an /etc/pam.d
directory. If not, or if you aren't using PAM then disregard...
If you ARE using PAM (this is on Redhat now, your paths may vary):
Check for /etc/pam.d/login, and look for the line:
session required /lib/security/pam_limits.so
If it's not there, go ahead and add it. Now look for
/etc/security/limits.conf. Add some lines like:
* soft nofile 8192
* hard nofile 8192
which sets the default hard and soft fd limits for all users (except
root) to 8192. You still have to echo to /proc/sys/file-max and
/proc/sys/inode-max.
cheers,
mark
==============9F46855614B69C50BF563EF2
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<HTML>
<P>DOn't know if this will be useful.. There is some useful info in an
earlier post by another member of this newsgroup, which I had saved...
Check it out...
<P>Anand
<P><I>If you're using PAM (password authentications modules IIRC, which</I>
<BR><I>happens to be used in later Redhat distros), then you may need to
do a</I>
<BR><I>bit more work. If you're using PAM you probably have an /etc/pam.d</I>
<BR><I>directory. If not, or if you aren't using PAM then disregard...</I><I></I>
<P><I>If you ARE using PAM (this is on Redhat now, your paths may vary):</I>
<BR><I>Check for /etc/pam.d/login, and look for the line:</I><I></I>
<P><I>session required
/lib/security/pam_limits.so</I><I></I>
<P><I>If it's not there, go ahead and add it. Now look for</I>
<BR><I>/etc/security/limits.conf. Add some lines like:</I><I></I>
<P><I>* soft nofile
8192</I>
<BR><I>* hard nofile
8192</I><I></I>
<P><I>which sets the default hard and soft fd limits for all users (except</I>
<BR><I>root) to 8192. You still have to echo to /proc/sys/file-max
and</I>
<BR><I>/proc/sys/inode-max.</I><I></I>
<P><I>cheers,</I><I></I>
<P><I>mark</I></HTML>
==============9F46855614B69C50BF563EF2==
------------------------------
From: Anders Larsen <[EMAIL PROTECTED]>
Subject: Re: Linux loses packets
Date: Wed, 19 Apr 2000 10:56:19 +0200
Duke Lee wrote:
>
> I am pinging from my linux box to another machine over 100Mbps Ethernet
> connection using -f option. (This option allows to you ping as soon as you
> get the acknowledgement or every 10 milliseconds whichever is faster) And I
> am losing packets. When I ping from my solaris machine or QNX machine I
> don't lose any packets. Basically, the packet drop rate is about 1-3 %
> depending on how many piece of Linux box is involved. I tried all
> combinations Linux-Linux, Linux-Solaris, Linux-QNX, and it seems as though
> more Linux involved the worse the packet drop rate became. I tried these
> experiment on both desktops and laptops.
It is perfectly normal to lose packets when you use the -f (flood) option.
Note that ping sends *at least* one hundred echo-requests per second, even
if the peer *cannot* keep up with its responses!
The receiving machine will *not* queue received ping requests indefinitely
but instead will drop the pending packets, since ICMP packets are considered
low-priority.
Actual packet drop rate depends on the network load as well as the internals
(= speed) of the software involved, thus your different drop rates above.
Are you sure Solaris and QNX handles the sending of ping -f in the same way
as Linux, that is, if they also send *at least* 100 packets per second?
If that is so, then your observation simply means that Linux can send the
packets out faster than the other two OS!
> I also tried to vary the priority of what I thought was the network process,
> inetd, from -20 to 20 by renice command. (Is that inetd process network
> process?) Anyways, varying the priority didn't help. This is expected
> because I am not running anything else on the machine accept pinging
> process.
The inetd process is not involved in the ping'ing process (as you have
observed).
A ping is a low-level service (using the ICMP protocol) and is handled
entirely within the kernel (Linux) or Sock(l)et process (QNX).
inetd is responsible for accepting/rejecting higher-level UDP and TCP
connections and bringing up the correct service.
> The hardware that these linux is running on is not slow computers. Pentium
> 3, 500MHz. We also have several machine that runs linux so it cannot be
> particular hardware problem.
Right.
> When I tried to connect two Linux using wireless LAN you can imagine it was
> even worse. (14-19 percent packet loss rate even though the laptop was right
> next to each other. 14 percent packet drop rate was observed when I was
> running RedHat 6.0 on Toshiba Stellite and 19 was observed when I was
> running Slackware 7.0 on Acer TravelMate 732TXV). Toshiba Satellite is
> ancient, and Acer is new but Toshiba does better.
Slower network, higher loss; ping -f still attempts to send >= 100 packets/sec.
BTW, you should see a dramatic change in the packet drop rate if you change
the packet size with the -s option.
> Another thing that troubles me is when I connected QNX machine and my linux
> laptop also Pentium 3, 500MHz using RS232 cable. I found that linux garbles
> the packets over the serial line. When QNX-QNX combination is fine.
I assume you mean that Linux has problems receiving the packets.
This could be a receiver overrun problem.
Which kind of communication are you using (terminal-terminal, ppp, whatever),
and which communication speed (fast or damn fast)?
Have you enabled hardware handshake on both boxes (and wired the corresponding
signals)?
Has Linux correctly identified the UART (16550A or better in order to use
hardware (FIFO) buffering of incoming characters)?
> Is this a common problem for linux? Or could my linux be not configured
> right? Should I be looking into Real time Linux solutions such as RTAI? I
> have been struggling with this for two weeks now, and I would greatly
> appreciate your help.
My guess is that RT Linux won't reduce your packet loss (which you should not
consider a problem anyway).
Cheers
Anders Larsen
--
e-mail: alarsen AT baumerident DOT com
#exclude <windows.h>
------------------------------
From: [EMAIL PROTECTED]
Crossposted-To: comp.os.linux.networking,comp.os.linux.development.app
Subject: How do you ascertain the number of bytes to read of a packet?
Date: Wed, 19 Apr 2000 09:21:16 GMT
hey all,
How does one calculate the number of bytes to read of a received packet
on Linux? On Solaris, I would do it this way:
int pkt_len;
ioctl(sockno, I_NREAD, &pkt_len);
Any assistance would be greatly appreciated!
tia,
robert
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
From: James Cownie <[EMAIL PROTECTED]>
Subject: Re: Obtaining Program Counter
Date: Wed, 19 Apr 2000 10:26:34 GMT
> But how can I get the task struct for a certain pid?
Use ptrace.
-- Jim
James Cownie <[EMAIL PROTECTED]>
Etnus, Inc. +44 117 9071438
http://www.etnus.com
------------------------------
From: [EMAIL PROTECTED]
Subject: porting....
Date: Wed, 19 Apr 2000 10:30:33 GMT
Hello all,
I'm about to take on the huge task of attempting to port Linux to a new
(currently unsupported) platform. The target is MIPS-based, so I was
hoping I might be able to snag some of the existing code in arch/mips...
I really haven't the faintest idea of where to start, as I'm not much
of a kernel hacker, so any FAQ, HOWTO, book, webpage, or even scribble
on a restaurant napkin would be helpful.
Any experts out there have any suggestions as to what I need to change
to get it working?
Thanks.
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
From: Ekta Agarwal <[EMAIL PROTECTED]>
Subject: LIMITS OF LINUX.........PLEASE HELP
Date: Tue, 18 Apr 2000 21:51:07 -0400
Reply-To: [EMAIL PROTECTED]
Hi,
I'm as desperate as I can possible get right now. Any help would be
like a godsent......
I needed to know very urgently
1. Does linux have a limit on the no of TCP connections that can be
concurrently open at one time?
If yes, How do I find out what the limit is. Can I change it, if so
where and how?
2. Is there a limit on the no of file descriptors that can be open
concurrently at once.
If yes how do I find out what this no is. Can I change it ?
Both the no of filedescriptors that can be open per process which
I think is 1024 , and the no of file descriptors
that can be open at any one time concurrently.
3. My machine, can only handle like 400 processes concurrently at one time.
I need to scale this no. How is it that the apache server which is built on
a linux OS can handle so many more processes concurrently. I have a machine
which
is 130 Meg ram and 10 gig hard disk space a lot of space. I think I am
running into some other bottle neck.
Your help would be like a life saver for me.
Thanks a million
Ekta :)
------------------------------
From: [EMAIL PROTECTED] (M Sweger)
Subject: Re: binutils, missing objdump options and linux 2.0.36+
Date: 19 Apr 2000 11:35:25 GMT
Reply-To: [EMAIL PROTECTED]
Thanks. Removing encaps allowed linux v2.0.36 and v2.0.38 to compile and run.
I'm running v2.0.38 now.
Paul Kimoto ([EMAIL PROTECTED]) wrote:
: In article <8dhf1o$c80$[EMAIL PROTECTED]>, M Sweger wrote:
: > Paul Kimoto ([EMAIL PROTECTED]) wrote:
: >: You need to remove
: >: encaps(1).
: >
: >: Doesn't Documentation/Changes mention this?
: > No the linux v2.0.36 kernel "Changes" documentation doesn't mention it.
: > It thinks binutils v2.7.0.3 is still ok to use.
: There is a document somewhere that reminds you to remove encaps(1), though.
: (Does your binutils contain a version of encaps(1), or is it left over from
: some earlier version?)
: --
: Paul Kimoto <[EMAIL PROTECTED]>
--
Mike,
[EMAIL PROTECTED]
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: Where can I find kernel debuger?
Date: Wed, 19 Apr 2000 12:09:50 GMT
In article <[EMAIL PROTECTED]>,
[EMAIL PROTECTED] wrote:
> oss.sgi.com
>
Thanks.
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
From: "Lee,Sang-Yong" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: Where does IDE irq really applied PIC?
Date: Wed, 19 Apr 2000 12:34:25 GMT
Hello,
I want to know where in the linux source the ide irq(HDD primary and
secondary) is enabled(unmasked)
by PIC(programmable interrupt controller).. I searched for it... But
linux ide source code is too complicated
to pinpoint its place..
So, would anybody pinpoint it ???
And, in the internet, does the URL exist where linux E-IDE device driver
is explained ??
Thank you very much..
------------------------------
From: [EMAIL PROTECTED] (Juergen Fischer)
Subject: Re: Read combining on memory-mapped I/O?
Date: Wed, 19 Apr 2000 13:10:21 GMT
Reply-To: [EMAIL PROTECTED]
x-no-archive: yes
"David Ellsworth" <[EMAIL PROTECTED]> wrote:
> I have an ATI All-in-Wonder Pro and I want to capture a raw, full-framed
> NTSC video stream. The problem is, the stream goes at just under 18
> Mbytes/sec, and reading from video memory seems to be limited to ~8
> Mbytes/sec.
>
> There doesn't seem to be any MTRR "read combining" mode, so I tried setting
> the window of video memory I'm using for video capture
> (0xE7000000-0xE7FFFFFF) to "write through". This *did* allow me to capture
> the stream with no drop-outs, but there are two problems:
you got 18mb/s after setting cachemode of vram adressspace to write
thru ? can you really read vram at 18mb/s ?
what about DMA ?
------------------------------
From: Emmanuel Chaput <[EMAIL PROTECTED]>
Subject: Packet reception on virtual interface
Date: Wed, 19 Apr 2000 13:40:04 +0000
Hello,
I would like to know how a virtual network interface (like ethernet
aliases) can receive packets. I must admit that reading the source was
not very helpful !
Thanks for any help ...
Manu
------------------------------
From: Ulisses Montenegro <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.linux.advocacy,comp.os.ms-windows.advocacy,comp.os.ms-windows.nt.advocacy,comp.os.linux.networking,comp.os.ms-windows.networking.tcp-ip
Subject: Re: MICROSOFT IT THRU! MICROSOFT IS THRU!
Date: Wed, 19 Apr 2000 11:31:28 -0300
On Sat, 15 Apr 2000, Charlie Ebert wrote:
:Dear Chad.
:
:Microsoft is asking everybody to delete that .dll.
:They wouldn't ask us to delete the .dll if it weren't a threat.
Not true. Someone shouts 'fire!' while a party is going on at your house.
Everybody panics. You look around and see no fire. You tell that to
everyone in your house. Yet, people are already so freaked out that the
whole stuff goes out of control. Would you rather try to calm down people
and tell them not to leave your house, or let them leave and take the time
to *really* look for that fire? Maybe you would take the first option if,
in case someone got hurt, you weren't sued for millions. That is not the
case with Microsoft. So, being not sure that the vulnerability exists
(even though they stated it doesn't), they take the safe route. Simple as
that. Erase the DLL. If later it is proven that there actually was some
vulnerability, they're covered.
:You can't call a guy a moron and an idiot if there's been a story publishe=
d
:about a security threat from a Microsoft product, THEN have Microsoft tell
:you to delete the .dll because it IS a security threat.
IF you're so sure it is a security threat, then try it on a server of
yours. And see for yourself. Now if you manage to make it work, kudos for
you. Post your results, and you shall be praised for that. If not, shut
up.
:That just makes you look stupid.
Him..? Look in a mirror, buddy.
:You CAN'T KEEP turning the WORLD into FUDSTERS every time a new BAD THING =
is
:EXPOSED about Microsoft products...
Ok, Agent Mulder. We'll have the X-Files re-opened.
:And this guy has the Gaul to holler 'FUDSTER' 'Idiot' 'Moron' TO ME!
:GOD, I can't believe it.
Have you a problem with your caps-lock..? Or are you just trying to make
yourself look stupid?
:Chad, ... No... No Chad...
:
:Charlie
[]'s
Ulisses
---
RADIX:
Mais de 4 milh=F5es de p=E1ginas est=E3o dispon=EDveis em http://www.radix.=
com.br/!
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: LIMITS OF LINUX.........PLEASE HELP
Date: Wed, 19 Apr 2000 15:16:30 +0100
Ekta Agarwal <[EMAIL PROTECTED]> wrote:
: Hi,
: I'm as desperate as I can possible get right now. Any help would be
: like a godsent......
: I needed to know very urgently
: 1. Does linux have a limit on the no of TCP connections that can be
: concurrently open at one time?
: If yes, How do I find out what the limit is. Can I change it, if so
: where and how?
I don't know. TCP has an inherent limitation, related to
the number of port numbers available, so probably your
maximum here is of the order of 64K.
: 2. Is there a limit on the no of file descriptors that can be open
: concurrently at once.
: If yes how do I find out what this no is. Can I change it ?
: Both the no of filedescriptors that can be open per process which
: I think is 1024 , and the no of file descriptors
: that can be open at any one time concurrently.
glibc 2.1 with kernel 2.2 supports very large numbers of file
descriptors per process, 32K and more. You will need to make sure that
the per-process limits are not set (ie. check with the ulimit
command, and increase it if necessary in /etc/security/limits.conf).
The number of files that can be open across all processes is controlled
by two sysctl files: /proc/sys/fs/file-max and /proc/sys/fs/inode-max.
I normally do:
echo 16384 > /proc/sys/fs/file-max
echo 30000 > /proc/sys/fs/inode-max
in my rc scripts at boot.
: 3. My machine, can only handle like 400 processes concurrently at one time.
: I need to scale this no. How is it that the apache server which is built on
: a linux OS can handle so many more processes concurrently. I have a machine
You will need to recompile the kernel to get round this
limitation. See /usr/include/linux/tasks.h and you can increase
NR_TASKS up to around 4000. In Linux 2.3 this limit is
removed.
: which is 130 Meg ram and 10 gig hard disk space a lot of space. I think I am
: running into some other bottle neck.
If you're handing a high load webserver, particularly if
you're using mod_perl, you're gonna need a LOT more RAM
than that. Figure on having 512MB - 1 GB in each webserver
and 4 GB plus in your database server.
Use the `vmstat 1' command to see if it's swapping. Swapping
is a very bad thing for webservers to be doing.
: Your help would be like a life saver for me.
: Thanks a million
: Ekta :)
Rich.
--
[EMAIL PROTECTED] | Free email for life at: http://www.postmaster.co.uk/
BiblioTech Ltd, Unit 2 Piper Centre, 50 Carnwath Road, London, SW6 3EG.
+44 171 384 6917 | Click here to play XRacer: http://xracer.annexia.org/
--- Original message content Copyright � 2000 Richard Jones ---
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: Obtaining Program Counter
Date: Wed, 19 Apr 2000 15:20:21 +0100
Thomas van Gulick <[EMAIL PROTECTED]> wrote:
: Is it possible to get the value of the PC for a certain task? I'd like to be
: able to get the PC or IC from a task that has stalled.
In the kernel or in userspace? In userspace, it's one of
the fields in /proc/<pid>/stat.
Rich.
--
[EMAIL PROTECTED] | Free email for life at: http://www.postmaster.co.uk/
BiblioTech Ltd, Unit 2 Piper Centre, 50 Carnwath Road, London, SW6 3EG.
+44 171 384 6917 | Click here to play XRacer: http://xracer.annexia.org/
--- Original message content Copyright � 2000 Richard Jones ---
------------------------------
From: [EMAIL PROTECTED] (Peter Mortensen)
Crossposted-To: comp.os.linux.development.apps
Subject: Re: linux pthreads problem on dual processor machine
Date: Wed, 19 Apr 2000 15:05:34 GMT
On Mon, 03 Apr 2000 14:43:15 -0400, Bonny Gijzen <[EMAIL PROTECTED]>
wrote:
>Hello Nate,
>
>Could you tell me which rmp files I need to upgrade my glibc to version
>2.1.3
>I'm afraid I will ruin my system if I miss some files.
>
>Rgs Bonny,
For RedHat:
ftp://sunsite.auc.dk/pub/os/linux/rawhide/i386/RedHat/RPMS/glibc-2.1.3-16.i386.rpm
(
Here it is!!: glibc 2.1.3, RedHat RPM. Date: 2000-04-05.
Mirror of
<ftp://rawhide.redhat.com/i386/RedHat/RPMS/glibc-2.1.3-16.i386.rpm>.
Parents:
<http://www.userfriendly.net/linux/RPM/rawhide/1.0/i386/RedHat/RPMS/glibc-2.1.3-2.i386.html>,
<ftp://rpmfind.net/linux/rawhide/1.0/i386/RedHat/RPMS//glibc-2.1.3-2.i386.rpm>,
.)
--
Regards,
Peter Mortensen
========================================================================
Peter Mortensen, E-mail: [EMAIL PROTECTED]
Software Engineer, M.Sc.E.E. FAX: +45 63 15 20 40
Bioinformatics Application developer Phone: +45 63 15 20 37
Protana A/S +45 63 15 20 30 (SwB)
http://www.protana.com/~pm/
DKK 14000 (US$ 2000) charge to accept unsolicited commercial messages.
------------------------------
From: Marc SCHAEFER <[EMAIL PROTECTED]>
Subject: Re: Overlay filesystem (aka union, translucent, inheriting)?
Date: 19 Apr 2000 09:25:29 GMT
Thomas Steffen <[EMAIL PROTECTED]> wrote:
: I need an overlay filesystem for Linux. This means I can mount a ro
look into:
olvfs
podfuk
FIST
userfs
------------------------------
From: [EMAIL PROTECTED] (Robie Basak)
Subject: Re: ppp modules
Reply-To: [EMAIL PROTECTED]
Date: 19 Apr 2000 17:14:14 GMT
On Wed, 19 Apr 2000 02:34:45 GMT, Bob Cunius said:
>Hi,
> I recently updated my kernel from 2.2.13 to 2.3.99-pre3 and i
>recompiled the modules for ppp support. And now when i try to connect
>using pppd it told me it could not find ppp.o module. So i looked to
>see what the difference between the modules for 2.3.99-pre3 and 2.2.13
>was. I noticed that the name of the module changed from ppp.o to
>ppp_generic.o. I figured i just had to create a hard link from ppp.o
>to ppp_generic.o. But when i did that, there were unresolved
>dependencies for ppp.o, even though there were no unresolved
>dependencies in ppp_generic.o. I had even modified modules.dep so that
>ppp.o reflected the same dependencies as ppp_generic. What do i have
>to do to get pppd to load the ppp* module?
Edit /etc/conf.modules or /etc/modules.conf (whichever exists) and add
the line:
alias ppp ppp_generic
Robie.
--
------------------------------
From: "Stephen Kennedy" <[EMAIL PROTECTED]>
Subject: Re: Debuger for Linux
Date: Wed, 19 Apr 2000 18:24:51 +0100
> I installed recently Linux at home computer.
> Is there some debugger like dbx in linux for c++.
> Or may be there is some IDE for graphic environment.
Your distro may have come with ddd which is very good.
Otherwise you can get it from freshmeat.net
Stephen.
------------------------------
From: [EMAIL PROTECTED] (Mario Klebsch)
Subject: Re: LIMITS OF LINUX.........PLEASE HELP
Date: Wed, 19 Apr 2000 19:34:14 +0200
[EMAIL PROTECTED] writes:
>Ekta Agarwal <[EMAIL PROTECTED]> wrote:
>: 1. Does linux have a limit on the no of TCP connections that can be
>: concurrently open at one time?
>: If yes, How do I find out what the limit is. Can I change it, if so
>: where and how?
>I don't know. TCP has an inherent limitation, related to
>the number of port numbers available, so probably your
>maximum here is of the order of 64K.
TCPs limit is 64K commections per client. :-)
73, Mario
--
Mario Klebsch [EMAIL PROTECTED]
------------------------------
From: "Albert" <[EMAIL PROTECTED]>
Subject: Re: PCI Modem
Date: Wed, 19 Apr 2000 18:49:19 GMT
On Tue, 18 Apr 2000 01:22:06 GMT, [EMAIL PROTECTED] (Rob Clark) wrote:
>In article <[EMAIL PROTECTED]>,
>Albert Decker <[EMAIL PROTECTED]> wrote:
>>Newbie here - I just installed RedHat - That took three days but
>>that's another story - I have a PCI modem and under windows it does
>>not connect to a com port but is driven by an "AOpen PCI Modem
>>Enumerator" . How in the heck do I access it from Linux? If I can't
>>then it reduces the usefulness of Linux by too much!
>
>Please check the modem list at http://www.o2.net/~gromitkc/winmodem.html
>
>Rob Clark, [EMAIL PROTECTED]
Looks promising - thanks!
------------------------------
From: greg <[EMAIL PROTECTED]>
Subject: modules
Date: Wed, 19 Apr 2000 15:17:24 -0400
Reply-To: [EMAIL PROTECTED]
How can you find out which modules are loaded?
------------------------------
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