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OpenVZ domain cpu time
* src/openvz_driver.c: patch from Evgeniy Sokolov to get OpenVZ domain cpu time consumption. Daniel
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@ -1,3 +1,8 @@
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Mon Jul 21 10:07:08 CEST 2008 Daniel Veillard <veillard@redhat.com>
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* src/openvz_driver.c: patch from Evgeniy Sokolov to get OpenVZ
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domain cpu time consumption.
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Mon Jul 21 10:01:36 CEST 2008 Daniel Veillard <veillard@redhat.com>
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* configure.in: patch from David Lively to try to detect the xen
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@ -94,6 +94,8 @@ static int openvzDomainUndefine(virDomainPtr dom);
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static int convCmdbufExec(char cmdbuf[], char *cmdExec[]);
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static void cmdExecFree(char *cmdExec[]);
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static int openvzGetProcessInfo(unsigned long long *cpuTime, int vpsid);
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struct openvz_driver ovz_driver;
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static int convCmdbufExec(char cmdbuf[], char *cmdExec[])
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@ -279,6 +281,16 @@ static int openvzDomainGetInfo(virDomainPtr dom,
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info->state = vm->status;
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if (!openvzIsActiveVM(vm)) {
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info->cpuTime = 0;
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} else {
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if (openvzGetProcessInfo(&(info->cpuTime), dom->id) < 0) {
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openvzError(dom->conn, VIR_ERR_OPERATION_FAILED,
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_("cannot read cputime for domain %d"), dom->id);
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return -1;
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}
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}
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/* TODO These need to be calculated differently for OpenVZ */
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//info->cpuTime =
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//info->maxMem = vm->def->maxmem;
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@ -689,6 +701,51 @@ static int openvzListDefinedDomains(virConnectPtr conn,
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return got;
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}
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static int openvzGetProcessInfo(unsigned long long *cpuTime, int vpsid) {
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int fd;
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char line[1024] ;
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unsigned long long usertime, systime, nicetime;
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int readvps = 0, ret;
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/* read statistic from /proc/vz/vestat.
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sample:
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Version: 2.2
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VEID user nice system uptime idle other..
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33 78 0 1330 59454597 142650441835148 other..
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55 178 0 5340 59424597 542650441835148 other..
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*/
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if ((fd = open("/proc/vz/vestat", O_RDONLY)) == -1)
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return -1;
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/*search line with VEID=vpsid*/
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while(1) {
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ret = openvz_readline(fd, line, sizeof(line));
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if(ret <= 0)
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break;
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if (sscanf(line, "%d %llu %llu %llu",
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&readvps, &usertime, &nicetime, &systime) != 4)
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continue;
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if (readvps == vpsid)
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break; /*found vpsid*/
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}
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close(fd);
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if (ret < 0)
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return -1;
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if (readvps != vpsid) /*not found*/
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return -1;
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/* convert jiffies to nanoseconds */
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*cpuTime = 1000ull * 1000ull * 1000ull * (usertime + nicetime + systime)
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/ (unsigned long long)sysconf(_SC_CLK_TCK);
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return 0;
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}
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static int openvzNumDefinedDomains(virConnectPtr conn ATTRIBUTE_UNUSED) {
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return ovz_driver.num_inactive;
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}
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