Date: Fri, 05 Feb 1999 17:21:57 +0300 (MSK) From: "Sergey S. Kosyakov" <ks@itp.ac.ru> To: freebsd-hackers@FreeBSD.ORG Subject: Memory leak in pthread? Message-ID: <XFMail.990205172157.ks@itp.ac.ru>
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Just simple program:
#define MAX_THREADS 500
while(1)
{
for(i=0;i<MAX_THREADS;i++)
{
id[i]=i;
pthread_create(&thr[i],NULL,doit,&id[i]);
}
for(i=0;i<MAX_THREADS;i++)
pthread_join(thr[i],NULL);
printf("Cycle.\n");
}
This programm very quickly eats all the virtual memory. In "freebsd-hackers
archive" I found some words about thread management by hand. More complicated
program, where stacks are allocated/deallocated by malloc()/free() for each
thread, eats memory not so quickly, but still eats, e.g. resident size (for each
"cycle" printed)
1528K
1792K
2036K
2296K
2552K
3100K
and so on.
Another effect - program runs slower and slower.
What is the cause? When stack management, pthread_cleanup_push was used.
Sergey.
---
----------------------------------
Sergey Kosyakov
Laboratory of Distributed Computing
Department of High-Performance Computing and Applied Network Research
Landau Institute for Theoretical Physics
E-Mail: ks@itp.ac.ru
Date: 05-Feb-99
Time: 17:08:58
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