[libvirt] [PATCH 4/5 V3] virsh: Enable the pcpuinfo command in virsh
This command gets information about the physical CPUs.
Example:
# virsh pcpuinfo rhel6
CPU: 0
Curr VCPU: -
Usage: 47.3
CPU: 1
Curr VCPU: 1
Usage: 46.8
CPU: 2
Curr VCPU: 0
Usage: 52.7
CPU: 3
Curr VCPU: -
Usage: 44.1
Signed-off-by: Lai Jiangshan <laijs(a)cn.fujitsu.com>
---
tools/virsh.c | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
tools/virsh.pod | 5 +++
2 files changed, 98 insertions(+), 0 deletions(-)
diff --git a/tools/virsh.c b/tools/virsh.c
index c511e2a..e8b9221 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -4702,6 +4702,98 @@ cmdVcpuinfo(vshControl *ctl, const vshCmd *cmd)
}
/*
+ * "pcpuinfo" command
+ */
+static const vshCmdInfo info_pcpuinfo[] = {
+ {"help", N_("detailed domain pcpu information")},
+ {"desc", N_("Returns basic information about the domain's physical
CPUs.")},
+ {NULL, NULL}
+};
+
+static const vshCmdOptDef opts_pcpuinfo[] = {
+ {"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or
uuid")},
+ {NULL, 0, 0, NULL}
+};
+
+static bool
+cmdPcpuinfo(vshControl *ctl, const vshCmd *cmd)
+{
+ virDomainInfo info;
+ virDomainPtr dom;
+ virNodeInfo nodeinfo;
+ virVcpuInfoPtr cpuinfo;
+ unsigned char *cpumaps;
+ int ncpus, maxcpu;
+ size_t cpumaplen;
+ bool ret = true;
+ int n, m;
+
+ if (!vshConnectionUsability(ctl, ctl->conn))
+ return false;
+
+ if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
+ return false;
+
+ if (virNodeGetInfo(ctl->conn, &nodeinfo) != 0) {
+ virDomainFree(dom);
+ return false;
+ }
+
+ if (virDomainGetInfo(dom, &info) != 0) {
+ virDomainFree(dom);
+ return false;
+ }
+
+ cpuinfo = vshMalloc(ctl, sizeof(virVcpuInfo)*info.nrVirtCpu);
+ maxcpu = VIR_NODEINFO_MAXCPUS(nodeinfo);
+ cpumaplen = VIR_CPU_MAPLEN(maxcpu);
+ cpumaps = vshMalloc(ctl, info.nrVirtCpu * cpumaplen);
+
+ if ((ncpus = virDomainGetVcpus(dom,
+ cpuinfo, info.nrVirtCpu,
+ cpumaps, cpumaplen)) >= 0) {
+ unsigned long long *usages;
+ int nr_usages = maxcpu;
+
+ if (VIR_ALLOC_N(usages, nr_usages) < 0) {
+ virReportOOMError();
+ goto fail;
+ }
+
+ if (virDomainGetPcpusUsage(dom, usages, &nr_usages, 0) < 0) {
+ VIR_FREE(usages);
+ goto fail;
+ }
+
+ for (n = 0; n < MIN(maxcpu, nr_usages); n++) {
+ vshPrint(ctl, "%-15s %d\n", _("CPU:"), n);
+ for (m = 0; m < ncpus; m++) {
+ if (cpuinfo[m].cpu == n) {
+ vshPrint(ctl, "%-15s %d\n", _("Curr VCPU:"), m);
+ break;
+ }
+ }
+ if (m == ncpus) {
+ vshPrint(ctl, "%-15s %s\n", _("Curr VCPU:"),
_("-"));
+ }
+ vshPrint(ctl, "%-15s %.1lf\n\n", _("Usage:"),
+ usages[n] / 1000000000.0);
+ }
+ VIR_FREE(usages);
+ goto cleanup;
+ }
+
+fail:
+ ret = false;
+
+cleanup:
+ VIR_FREE(cpumaps);
+ VIR_FREE(cpuinfo);
+ virDomainFree(dom);
+ return ret;
+}
+
+/*
* "vcpupin" command
*/
static const vshCmdInfo info_vcpupin[] = {
@@ -15952,6 +16044,7 @@ static const vshCmdDef domManagementCmds[] = {
{"migrate-getspeed", cmdMigrateGetMaxSpeed,
opts_migrate_getspeed, info_migrate_getspeed, 0},
{"numatune", cmdNumatune, opts_numatune, info_numatune, 0},
+ {"pcpuinfo", cmdPcpuinfo, opts_pcpuinfo, info_pcpuinfo, 0},
{"reboot", cmdReboot, opts_reboot, info_reboot, 0},
{"reset", cmdReset, opts_reset, info_reset, 0},
{"restore", cmdRestore, opts_restore, info_restore, 0},
diff --git a/tools/virsh.pod b/tools/virsh.pod
index c88395b..8d9cceb 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -1296,6 +1296,11 @@ Thus, this command always takes exactly zero or two flags.
Returns basic information about the domain virtual CPUs, like the number of
vCPUs, the running time, the affinity to physical processors.
+=item B<pcpuinfo> I<domain-id>
+
+Returns information about the physical CPUs of the domain, like the usage of
+CPUs, the current attached vCPUs.
+
=item B<vcpupin> I<domain-id> [I<vcpu>] [I<cpulist>]
[[I<--live>]
[I<--config>] | [I<--current>]]
--
1.7.4.4