On Tue, 25 Jan 2005 14:04:45 -0800, Julian Elischer <[EMAIL PROTECTED]> wrote:
>
>
> Jose Hidalgo Herrera wrote:
>
> >The line causing the SEGFAULT is
> >rc = pthread_create(&threads[t], NULL, PrintHello, (void *)t);
> >
> >Why?, because t is declared as:
> >int t;
> >then you say:
> >args for s
> >
> >This will be what you want:
> >rc = pthread_create(&threads[t], NULL, PrintHello, (void *) & t);
> >
>
> probably we shouldn't crash the system however.. (it is crashing right?
> that wasn't so clear to me).
the user land prog SEG fault itself,
it did not bring down the system though,
i am n
Hi, THanks a lot for the reply!
in the call to pthread_create(), i cast _t_ to a void pointer, since
that is pthread_create() function prototype asks for.. then in line
> printf("\n%d: Hello World!\n", threadid);
I use it as (cast it to) a _int_..
or i missed something here, is there a reason that
HI, Thanks for all the info!
> kse_release() in this context isn't kernel code, its from libpthread.
> The kernel equivalent of a segfault would generate a panic.
>
> Just in case: you're attempting to allocate more than 5000 threads:
> Each one from main tries to recursively create 5000 more, and
Hi, thanks a LOT for looking into this.
yes, that is exactly my output before the SEG fault happens (btw, i add
"if (p)" before
"p[id]++ ", the prob remains..
what confuses me is that, if the system is out of memory, then i should
see the error returned from pthread_create() or calloc(), but not SE
On Mon, 24 Jan 2005 14:27:53 -0800 (PST), Yan Yu <[EMAIL PROTECTED]> wrote:
> Hi, all, I have a newbie Q:
> I am trying to use creating large number of threads and allocting
> memory to stress the system.
> My user program causes SEG fault in the kernel code, kse_release () in
> kern_kse.c.
>
Cool, Thanks A LOT for looking into this! I appreciate it!
after I reduce the BSIZE to 50k, it can create more than 10k threads
before calloc error.. so i am going to drop this thread:)
(just fyi, i use your prog on our machine w/ BSIZE =500k
(~512M Ram), again i got SEG fault before the calloc err
This is my last try!, it worked for me, I reached a little more that
1000 threads, then I got the calloc error.
:-)
#include
#include
#include
#include
#define NUM_THREADS 5000
#define THREADS_IN_ONE_PROCESS 5
#define BSIZE 50
static int cc;
void *PrintHello(void *);
pthread
Jose Hidalgo Herrera wrote:
The line causing the SEGFAULT is
rc = pthread_create(&threads[t], NULL, PrintHello, (void *)t);
Why?, because t is declared as:
int t;
then you say:
args for start_routine in pthread_create are located in the address: t
This will be what you want:
rc = pthread_create(&t
The line causing the SEGFAULT is
rc = pthread_create(&threads[t], NULL, PrintHello, (void *)t);
Why?, because t is declared as:
int t;
then you say:
args for start_routine in pthread_create are located in the address: t
This will be what you want:
rc = pthread_create(&threads[t], NULL, PrintHell
I ran it into:
4.11-STABLE FreeBSD Wed Jan 19 15:23:33 CST 2005
What you find in
http://www1.cr.freebsd.org/~jose/stress.tgz
is the output of:
ktrace ./a.out > stress.txt
On Mon, 2005-01-24 at 14:27 -0800, Yan Yu wrote:
> Hi, all, I have a newbie Q:
> I am trying to use creating large numbe
Hi, all, I have a newbie Q:
I am trying to use creating large number of threads and allocting
memory to stress the system.
My user program causes SEG fault in the kernel code, kse_release () in
kern_kse.c.
(it SEG fault before the system can be stressed;(
the stack when the SEG fault happens
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