> no wonder, it should be 'nice -n -20 vmstat -n 1'. And you should also do
I keep a suid setrealtime wrapper around (UNSAFE!) for this kind of use:
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sched.h>
int main(int argc, char *argv[]) {
static struct sched_param sched_parms;
int pid, wrapper=0;
if (argc <= 1)
return 1;
pid = atoi(argv[1]);
if (!pid || argc != 2) {
wrapper = 1;
pid = getpid();
}
sched_parms.sched_priority = sched_get_priority_min(SCHED_FIFO);
if (sched_setscheduler(pid, SCHED_FIFO, &sched_parms) == -1) {
perror("cannot set realtime scheduling policy");
return 1;
}
if (wrapper) {
setuid(getuid());
execvp(argv[1],&argv[1]);
perror("exec failed");
return 1;
}
return 0;
}
regards, mark hahn.
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This archive was generated by hypermail 2b29 : Tue Jan 15 2002 - 21:00:29 EST