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cpu-stats command shows cpu statistics information of a domain.
CPU0: cpu_time 88.231593093 seconds CPU1: cpu_time 123.613341883 seconds Total: cpu_time 211.844934976 seconds Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
KAMEZAWA Hiroyuki
Eric Blake
parent
44b0a53a7c
commit
31047e2ba3
155
tools/virsh.c
155
tools/virsh.c
@ -5536,6 +5536,160 @@ cmdSetvcpus(vshControl *ctl, const vshCmd *cmd)
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return ret;
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}
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/*
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* "cpu-stats" command
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*/
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static const vshCmdInfo info_cpu_stats[] = {
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{"help", N_("show domain cpu statistics")},
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{"desc",
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N_("Display per-CPU and total statistics about the domain's CPUs")},
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{NULL, NULL},
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};
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static const vshCmdOptDef opts_cpu_stats[] = {
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{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
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{"total", VSH_OT_BOOL, 0, N_("Show total statistics only")},
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{"start", VSH_OT_INT, 0, N_("Show statistics from this CPU")},
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{"count", VSH_OT_INT, 0, N_("Number of shown CPUs at most")},
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{NULL, 0, 0, NULL},
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};
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static bool
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cmdCPUStats(vshControl *ctl, const vshCmd *cmd)
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{
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virDomainPtr dom;
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virTypedParameterPtr params = NULL;
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int i, j, pos, max_id, cpu = -1, show_count = -1, nparams;
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bool show_total = false, show_per_cpu = false;
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if (!vshConnectionUsability(ctl, ctl->conn))
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return false;
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if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
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return false;
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show_total = vshCommandOptBool(cmd, "total");
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if (vshCommandOptInt(cmd, "start", &cpu) > 0)
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show_per_cpu = true;
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if (vshCommandOptInt(cmd, "count", &show_count) > 0)
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show_per_cpu = true;
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/* default show per_cpu and total */
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if (!show_total && !show_per_cpu) {
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show_total = true;
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show_per_cpu = true;
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}
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if (!show_per_cpu) /* show total stats only */
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goto do_show_total;
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/* check cpu, show_count, and ignore wrong argument */
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if (cpu < 0)
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cpu = 0;
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/* get number of cpus on the node */
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if ((max_id = virDomainGetCPUStats(dom, NULL, 0, 0, 0, 0)) < 0)
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goto failed_stats;
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if (show_count < 0 || show_count > max_id)
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show_count = max_id;
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/* get percpu information */
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if ((nparams = virDomainGetCPUStats(dom, NULL, 0, 0, 1, 0)) < 0)
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goto failed_stats;
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if (!nparams) {
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vshPrint(ctl, "%s", _("No per-CPU stats available"));
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goto do_show_total;
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}
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if (VIR_ALLOC_N(params, nparams * MIN(show_count, 128)) < 0)
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goto failed_params;
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while (show_count) {
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int ncpus = MIN(show_count, 128);
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if (virDomainGetCPUStats(dom, params, nparams, cpu, ncpus, 0) < 0)
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goto failed_stats;
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for (i = 0; i < ncpus; i++) {
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if (params[i * nparams].type == 0) /* this cpu is not in the map */
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continue;
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vshPrint(ctl, "CPU%d:\n", cpu + i);
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for (j = 0; j < nparams; j++) {
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pos = i * nparams + j;
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vshPrint(ctl, "\t%-10s ", params[pos].field);
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if (STREQ(params[pos].field, VIR_DOMAIN_CPU_STATS_CPUTIME) &&
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params[j].type == VIR_TYPED_PARAM_ULLONG) {
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vshPrint(ctl, "%lld.%09lld seconds\n",
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params[pos].value.ul / 1000000000,
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params[pos].value.ul % 1000000000);
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} else {
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const char *s = vshGetTypedParamValue(ctl, ¶ms[pos]);
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vshPrint(ctl, _("%s\n"), s);
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VIR_FREE(s);
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}
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}
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}
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cpu += ncpus;
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show_count -= ncpus;
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virTypedParameterArrayClear(params, nparams * ncpus);
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}
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VIR_FREE(params);
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do_show_total:
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if (!show_total)
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goto cleanup;
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/* get supported num of parameter for total statistics */
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if ((nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0)) < 0)
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goto failed_stats;
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if (!nparams) {
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vshPrint(ctl, "%s", _("No total stats available"));
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goto cleanup;
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}
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if (VIR_ALLOC_N(params, nparams))
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goto failed_params;
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/* passing start_cpu == -1 gives us domain's total status */
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if ((nparams = virDomainGetCPUStats(dom, params, nparams, -1, 1, 0)) < 0)
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goto failed_stats;
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vshPrint(ctl, _("Total:\n"));
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for (i = 0; i < nparams; i++) {
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vshPrint(ctl, "\t%-10s ", params[i].field);
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if (STREQ(params[i].field, VIR_DOMAIN_CPU_STATS_CPUTIME) &&
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params[i].type == VIR_TYPED_PARAM_ULLONG) {
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vshPrint(ctl, "%llu.%09llu seconds\n",
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params[i].value.ul / 1000000000,
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params[i].value.ul % 1000000000);
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} else {
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char *s = vshGetTypedParamValue(ctl, ¶ms[i]);
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vshPrint(ctl, "%s\n", s);
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VIR_FREE(s);
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}
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}
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virTypedParameterArrayClear(params, nparams);
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VIR_FREE(params);
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cleanup:
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virDomainFree(dom);
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return true;
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failed_params:
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virReportOOMError();
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virDomainFree(dom);
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return false;
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failed_stats:
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vshError(ctl, _("Failed to virDomainGetCPUStats()\n"));
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VIR_FREE(params);
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virDomainFree(dom);
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return false;
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}
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/*
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* "inject-nmi" command
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*/
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@ -16910,6 +17064,7 @@ static const vshCmdDef domManagementCmds[] = {
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#endif
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{"cpu-baseline", cmdCPUBaseline, opts_cpu_baseline, info_cpu_baseline, 0},
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{"cpu-compare", cmdCPUCompare, opts_cpu_compare, info_cpu_compare, 0},
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{"cpu-stats", cmdCPUStats, opts_cpu_stats, info_cpu_stats, 0},
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{"create", cmdCreate, opts_create, info_create, 0},
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{"define", cmdDefine, opts_define, info_define, 0},
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{"desc", cmdDesc, opts_desc, info_desc, 0},
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@ -790,6 +790,14 @@ Provide the maximum number of virtual CPUs supported for a guest VM on
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this connection. If provided, the I<type> parameter must be a valid
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type attribute for the <domain> element of XML.
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=item B<cpu-stats> I<domain> [I<--total>] [I<start>] [I<count>]
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Provide cpu statistics information of a domain. The domain should
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be running. Default it shows stats for all CPUs, and a total. Use
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I<--total> for only the total stats, I<start> for only the per-cpu
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stats of the CPUs from I<start>, I<count> for only I<count> CPUs'
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stats.
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=item B<migrate> [I<--live>] [I<--direct>] [I<--p2p> [I<--tunnelled>]]
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[I<--persistent>] [I<--undefinesource>] [I<--suspend>] [I<--copy-storage-all>]
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[I<--copy-storage-inc>] [I<--change-protection>] [I<--unsafe>] [I<--verbose>]
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