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Red Hat Bugzilla – Attachment 317531 Details for
Bug 463504
Hang in shrink_zone during swap pressure, due to direct reclaim threads
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Run N+1 threads (where N=#CPUs) using ./bigmalloc 2000 &
bigmalloc.c (text/x-csrc), 632 bytes, created by
John Sobecki
on 2008-09-23 20:14:21 UTC
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Description:
Run N+1 threads (where N=#CPUs) using ./bigmalloc 2000 &
Filename:
MIME Type:
Creator:
John Sobecki
Created:
2008-09-23 20:14:21 UTC
Size:
632 bytes
patch
obsolete
>/* Compile with: gcc -o bigmalloc bigmalloc.c */ > >#include <stdio.h> >#include <stdlib.h> >#include <unistd.h> >#include <errno.h> > >int main(int ac, char **av) { > long int n,m,i; > char *buf; > > > if(ac < 2) { > printf("Usage: %s <alloc_size_MB>\n",av[0]); > exit(1); > } > sscanf(av[1],"%d",&n); > m=n*1024*1024; > printf("Allocating %ld bytes (%d MB), please wait...\n",m,n); > buf=malloc(n*1024*1024); > for(i=0;i<m;*(buf+i++)=1) > ; > printf("Done: Allocated %d MB\n",n); > printf("Sleeping for 10 minutes...\n"); > sleep(600); /* sleep */ >} >
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