On Wed, 29 Nov 2000, Mohit Aron wrote:
-Hi,
- FreeBSD provides the pthread package (available through the
-use of the option -pthread to gcc). Does this package use user-level
-threads or does it use kernel threads ? I believe the kernel supports
-multiple threads in the same address space
On Thu, 23 Nov 2000, FengYue wrote:
-dmesg: kvm_read:
-#6 0xc01882dd in fr_makefrip (hlen=20, ip=0xc0a48fe4, fin=0xd892fb0c)
-at ../../netinet/fil.c:258
-#7 0xc018e20c in fr_checkicmpmatchingstate (ip=0xc0a48fc8,
-fin=0xd892fc1c)
-at ../../netinet/ip_state.c:1081
Hi, I'm
On Mon, 27 Nov 2000, Alfred Perlstein wrote:
- I thought it's preemptive purely at user-level since the threads are
- scheduled by thread lib at user-level only. No?
-
-What are you asking? Give a scenario and I'll explain what should
-happen.
-
Hmm, actually I don't know in which case it'd
On Tue, 28 Nov 2000, FengYue wrote:
-Did I find the bug causing the panic or did I miss something?
Also, if it's the bug that causes the panic, the fix should be
pretty simple i guess, like do something like this before the IP
version check:
fin_fin_v = ip-ip_v;
right?
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On Tue, 28 Nov 2000, Alfred Perlstein wrote:
- Hmm, actually I don't know in which case it'd be considered as "preemptive
- at kernel level"... In the case where a thread calls a syscall and gets
- blocked, the entire process gets blocked not just that thread. In
- the case where the syscalls
After adding couple of printf() to fil.c and ip_state.c, I'm now pretty
sure that ofin with initialized fin_v in ip_state.c is causing the
crash. I could see that by doing a traceroute to ipv4 IP on the machine,
the fin_v sometimes gets a value of 6 that makes the IPV6 code gets executed
in
On Mon, 27 Nov 2000, Alfred Perlstein wrote:
-* David Petrou [EMAIL PROTECTED] [001127 14:41] wrote:
- thanks for the quick reply...
-
- 3. if preemptive, does that occur at user-level, or by the kernel?
- (and how costly is it?)
-
- It's a mix, and very cheap.
I thought it's
Hi, got a crash on 4.2-stable. the machine was running 4.1.1-stable
and had no problem at all. 10 hours after upgrade to 4.2-stable I got
a vmcore. Here it's the trace and could someone take a look, it looks
like it was the sendto() call triggered the crash but I don't know
how to reproduce
On Thu, 23 Nov 2000, Alfred Perlstein wrote:
-* Bosko Milekic [EMAIL PROTECTED] [001123 14:51] wrote:
-
- Hello,
-
- Can you please also get the instruction at which the page fault
- occured? You can try "where" from gdb or you can get the instruction
- pointer from the original
On Thu, 16 Nov 2000, Bakul Shah wrote:
-The simplest solution is to just fork a new process on
-accepting a new connection. A sample implementation is
why not just bind to the port and then spawn off some processes (like 20
in his case) to do the accept(), once the accept() returns
On Thu, 16 Nov 2000, Bakul Shah wrote:
-Yes, this is definitely simpler and preferable when servicing
-a small number of concurrent requests. But you have to spawn
-off as many processes as the worst case number of concurrent
-requests you want to service since while all the processes
-are
On Tue, 14 Nov 2000, Renaud Waldura wrote:
-Dear hackers,
-
- What exactly does not work?
- What does the option -l do?
-
-When launched automatically by ppp, tcpmssd doesn't get any of the packets
-and is useless. When I start it manually from the command line, it works
-fine.
-
-I realize
On Mon, 13 Nov 2000, Renaud Waldura wrote:
-I wrote an article about this setup. Should be published soon enough.
-http://renaud.waldura.com/doc/freebsd-pppoe/
-
-I'd like to get your feedback on the section making use of tcpmssd: it
-doesn't seem to work when the link is brought up
Hi, Any of you happened to hack the PPPoE support on Fbsd 4.x to
automatically fragment the IP datagram if whatever device behind the
NAT refuses to adjust its MTU?
Thanks
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On Sat, 21 Oct 2000, Frederik Meerwaldt wrote:
-Differences... FreeBSD is a real Unix, while Linux is a ..how should I
Hmmm. FreeBSD is not a UNIX, rather it's a UNIX alike OS. (Which really
doesn't matter IMHO)
Don't forget UNIX is a trademark of Open Group.
-say... semi Unix. IMHO
Hi, excluding the extra kernel calls of open()/close() on /dev/zero,
which one of the following would be more efficient:
1) Using mmap on /dev/zero
2) Using mmap with MAP_ANON flag
The purpose is, ofcourse, to share the memory (RW) among all child
processes.
It seems that mmap on /dev/zero
Hi, could someone take a look at this crash. The box is a
4.1-stable as Sep 6th. Any hints on what could have caused the crash?
This box crashs almost every 3-5 days. Thanks!
==cut here=
gdb -k kernel.debug /var/crash/vmcore.0
[GDB
On 3 Oct 2000, Dag-Erling Smorgrav wrote:
- panic messages:
- ---
-
-Where are the panic messages?
Unfortunately, there is no panic messages. I compiled the kernel with
-g (without DDB), and set the dumpdev in rc.conf. Did I do anything
wrong?
- Cannot access memory at address 0xce51d9b8.
-
Also, be able to filter packets based on TTL and SYN Seq value
would be useful in some cases too -- quiet a few SYN flood programs had
those values hard coded and script kids don't change them.
On Mon, 28 Aug 2000, Jaye Mathisen wrote:
Just exactly what I said in the Subject. I want to
Hi, I know this is an old topic but I don't seem to find answers
to my questions in the mailing list archives.
I'm wondering why FreeBSD did not implement the SYN cookies method
that is currently implemented in Linux? To my best understanding,
SYN cookie seems to be a better method against SYS
Hi, what does "psmintr: out of sync ( != 0008)." mean?
I got tons of this message on my console and then my X-window went
nearly dead.
sounds like my PS/2 mouse's problem? Found the source code in isa/psm.c,
but have not got any clue what could have caused this. (Have had this
mouse for
Forgot to mention, it's a 4.1-stable box (PIII-450, 256MB ram, 1024MB
swap)
On Wed, 23 Aug 2000, FengYue wrote:
Hi, what does "psmintr: out of sync ( != 0008)." mean?
I got tons of this message on my console and then my X-window went
nearly dead.
sounds like my PS/2 mouse
No, TTL is in IP header while SYN FIN are TCP flags.
On Mon, 14 Aug 2000, Bruce Petro wrote:
Is this similar to the following kernel configuration?
options TCP_DROP_SYNFIN #drop TCP packets with SYN+FIN
Thanks!
Bruce.
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hey, is there gonna be a freebsd or bsd booth there tomorrow
in san jose for that linux expo thing? I may go if there is
a bsd booth...
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Hi, I need to drop packets using ipfw based on the value of
TTL and the value of TTL on a 2.2.8-stable system. It seems
ipfw does not support this, what options do I have?
thanks
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On Sat, 12 Aug 2000, FengYue wrote:
Hi, I need to drop packets using ipfw based on the value of
TTL and the value of TTL on a 2.2.8-stable system. It seems
^^^
I meant SYN
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On Sat, 12 Aug 2000, Dennis wrote:
At 05:34 PM 8/12/00 -0400, Bill Fumerola wrote:
On Sat, Aug 12, 2000 at 12:03:15PM -0700, FengYue wrote:
Hi, I need to drop packets using ipfw based on the value of
TTL and the value of TTL on a 2.2.8-stable system. It seems
ipfw does not support
Hi there, a quick one. Is getpeername() considered expensive?
Would it be much better if I cache the result myself instead of
calling it everytime on the connected socket(returned from accept) to
find out which IP it connects to?
Thanks
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with
in thread read() implementation, there is this line of code:
while ((ret = _thread_sys_read(fd, buf, nbytes)) 0) {
suppose we're doing the IO on a TCP socket: _thread_sys_read() is going to
return -1 if there is no data available in the stream and the errno is then
set to
al Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Friday, June 23, 2000 3:02 AM
To: FengYue
Cc: [EMAIL PROTECTED]
Subject: Re: libc_r/_read(), should the errno be reset to 0?
On Fri, 23 Jun 2000, FengYue wrote:
My question is, shouldn't it be res
] [000511 22:49] wrote:
[EMAIL PROTECTED] (FengYue) writes:
loop. Now, the third program reads 4K of data from /tmp/pagetest
and exit if the 4K data does not contain all 'A's nor 'Z's. 3 programs
run concurrently on the same machine (3.4). No lock in the code whatsoever
the call is compeleted.
Is that right?
I can attach the code if it's necessary.
Thanks
FengYue
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Hello, anyone of you running mysql 3.22.32 on 4.0-stable?
I'm getting a core dump on startup. I tried with the ports as well
as the package from www.mysql.org. (4.0-stable as of May 7th)
Here it's the backtrace, I've not got a chance to look into the source.
I'm wondering if any of you have
If your CPU is not overclocked, then you should pay very good attention
to the motherboard if replacing memory didn't solve the problem. That
happened to me once. Spent many hours and finally it turned out to be the
motherboard.
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On Fri, 26 Nov 1999, Dan Moschuk wrote:
| int sd2;
| if((sd2=accept(sd, (struct sockaddr*)cad, alen)) 0) {
| pthread_create(thread1, pthread_attr_default,
|serverstart, sd2);
| }
|
| Then the serverstart function:
|
| void *serverstart(void *ptr)
| {
|
On Sat, 27 Nov 1999, Rob King wrote:
How would you recommend I do it? Please remember, I have no experience
with pthreads, and any advice you give would be greatly appreciated.
There are couple of ways you could do this:
1) pass sd2's value instead of its memory address to serverstart()
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