edwintorok at gmail
Jun 19, 2007, 11:23 AM
Post #2 of 3
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On 6/19/07, George Georgalis <george [at] galis> wrote:
> A week or so ago clamd stopped working for me,
> after upgrading to 0.90.3 --experimental I still get
> an unusable system.
>
> Linux ohm 2.4.20-ohm #1 Sat Jan 11 01:41:24 EST 2003 i586 unknown
>
> 2007-06-19 00:46:18.927419500 Reading databases from /usr/local/share/clamav
> 2007-06-19 00:46:20.709107500 /var/qmail/prequeue/1182228387.M945008P19386.ohm: OK
> 2007-06-19 00:49:44.064874500 Database correctly reloaded (127862 signatures)
> 2007-06-19 00:49:44.090803500 ERROR: pthread_create failed
> 2007-06-19 00:49:44.094281500 ERROR: pthread_create failed
> 2007-06-19 00:49:44.096545500 ERROR: pthread_create failed
> 2007-06-19 00:49:44.098762500 ERROR: pthread_create failed
> 2007-06-19 00:51:30.004529500 ERROR: pthread_create failed
>
Do you have some limits on number of processes (ulimit -a)?
What is your MaxThreads setting in clamd.conf?
If you think those limits are ok, open a bugreport on the bugzilla,
and attach the above info,
and possibly an strace output.
Also try running the program below to find out reason of failure:
/* gcc -o pthread_test.c -pthread pthread_test.c
* Run as:
* pthread_test MaxThreads
* where MaxThreads is your setting from clamd.conf
*/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sched.h>
static pthread_mutex_t cond_mut;
static pthread_cond_t cond;
static pthread_attr_t attr;
static size_t tcnt=0;
static void* idle_func(void* arg)
{
pthread_mutex_lock(&cond_mut);
tcnt++;
pthread_cond_wait(&cond,&cond_mut);
pthread_mutex_unlock(&cond_mut);
return NULL;
}
int main(int argc, char* argv[])
{
pthread_t* threads;
size_t cnt, i;
if(argc!=2) {
fprintf(stderr,"Usage:%s <number of threads>\n",argv[0]);
return 1;
}
cnt = atoi(argv[1]);
threads = malloc(cnt*sizeof(*threads));
if(!threads) {
perror("Malloc failed");
return 2;
}
pthread_mutex_init(&cond_mut,NULL);
pthread_cond_init(&cond, NULL);
if(pthread_attr_init(&attr)) {
fprintf(stderr,"pthread_attr_init failed\n");
return 3;
}
if (pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED)) {
fprintf(stderr,"pthread_attr_setdetachstate failed\n");
return 4;
}
printf("Creating %u threads\n",cnt);
for(i=0;i<cnt;i++) {
int rc = pthread_create(&threads[i],&attr,idle_func,NULL);
if(rc) {
fprintf(stderr,"pthread_create failed:%s\n",strerror(rc));
return 5;
}
}
printf("Waiting for threads to start\n");
while(tcnt!=cnt)
sched_yield();
printf("Signaling threads\n");
pthread_mutex_lock(&cond_mut);
pthread_cond_broadcast(&cond);
pthread_mutex_unlock(&cond_mut);
free(threads);
return 0;
}
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