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OpenVZ domain cpu time

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* src/openvz_driver.c: patch from Evgeniy Sokolov to get OpenVZ
  domain cpu time consumption.
Daniel
This commit is contained in:
Daniel Veillard 2008-07-21 08:08:25 +00:00
parent 92b56c0412
commit 7b4f67acea
2 changed files with 62 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Mon Jul 21 10:07:08 CEST 2008 Daniel Veillard <veillard@redhat.com>
* src/openvz_driver.c: patch from Evgeniy Sokolov to get OpenVZ
domain cpu time consumption.
Mon Jul 21 10:01:36 CEST 2008 Daniel Veillard <veillard@redhat.com>
* configure.in: patch from David Lively to try to detect the xen

57
src/openvz_driver.c
View File

@ -94,6 +94,8 @@ static int openvzDomainUndefine(virDomainPtr dom);
static int convCmdbufExec(char cmdbuf[], char *cmdExec[]);
static void cmdExecFree(char *cmdExec[]);
static int openvzGetProcessInfo(unsigned long long *cpuTime, int vpsid);
struct openvz_driver ovz_driver;
static int convCmdbufExec(char cmdbuf[], char *cmdExec[])
@ -279,6 +281,16 @@ static int openvzDomainGetInfo(virDomainPtr dom,
info->state = vm->status;
if (!openvzIsActiveVM(vm)) {
info->cpuTime = 0;
} else {
if (openvzGetProcessInfo(&(info->cpuTime), dom->id) < 0) {
openvzError(dom->conn, VIR_ERR_OPERATION_FAILED,
_("cannot read cputime for domain %d"), dom->id);
return -1;
}
}
/* TODO These need to be calculated differently for OpenVZ */
//info->cpuTime =
//info->maxMem = vm->def->maxmem;
@ -689,6 +701,51 @@ static int openvzListDefinedDomains(virConnectPtr conn,
return got;
}
static int openvzGetProcessInfo(unsigned long long *cpuTime, int vpsid) {
int fd;
char line[1024] ;
unsigned long long usertime, systime, nicetime;
int readvps = 0, ret;
/* read statistic from /proc/vz/vestat.
sample:
Version: 2.2
VEID user nice system uptime idle other..
33 78 0 1330 59454597 142650441835148 other..
55 178 0 5340 59424597 542650441835148 other..
*/
if ((fd = open("/proc/vz/vestat", O_RDONLY)) == -1)
return -1;
/*search line with VEID=vpsid*/
while(1) {
ret = openvz_readline(fd, line, sizeof(line));
if(ret <= 0)
break;
if (sscanf(line, "%d %llu %llu %llu",
&readvps, &usertime, &nicetime, &systime) != 4)
continue;
if (readvps == vpsid)
break; /*found vpsid*/
}
close(fd);
if (ret < 0)
return -1;
if (readvps != vpsid) /*not found*/
return -1;
/* convert jiffies to nanoseconds */
*cpuTime = 1000ull * 1000ull * 1000ull * (usertime + nicetime + systime)
/ (unsigned long long)sysconf(_SC_CLK_TCK);
return 0;
}
static int openvzNumDefinedDomains(virConnectPtr conn ATTRIBUTE_UNUSED) {
return ovz_driver.num_inactive;
}