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Add a new command dommemstats for virDomainMemoryStats

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Define a new command 'dommemstats' to report domain memory statistics.  The
output format is inspired by 'domblkstat' and 'domifstat' and consists of
tag/value pairs, one per line.  The command can complete successfully and
print no output if virDomainMemoryStats is supported by the driver, but not
the guest operating system.

Sample output:
swap_in 0
swap_out 0
major_fault 54
minor_fault 58259
unused 487680
available 502472

All stats referring to a quantity of memory (eg. all above except major and
minor faults) represent the quantity in KBytes.

* tools/virsh.c: implements the new command
This commit is contained in:
Adam Litke 2009-12-20 13:46:24 +01:00 committed by Daniel Veillard
parent 841d50358f
commit b6798b68cb
1 changed files with 55 additions and 0 deletions
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55
tools/virsh.c
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@ -884,6 +884,60 @@ cmdDomIfstat (vshControl *ctl, const vshCmd *cmd)
return TRUE;
}
/*
* "dommemstats" command
*/
static const vshCmdInfo info_dommemstats[] = {
{"help", gettext_noop("get memory statistics for a domain")},
{"desc", gettext_noop("Get memory statistics for a runnng domain.")},
{NULL,NULL}
};
static const vshCmdOptDef opts_dommemstats[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("domain name, id or uuid")},
{NULL, 0, 0, NULL}
};
static int
cmdDomMemStats(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom;
char *name;
struct _virDomainMemoryStat stats[VIR_DOMAIN_MEMORY_STAT_NR];
unsigned int nr_stats, i;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
return FALSE;
if (!(dom = vshCommandOptDomain(ctl, cmd, &name)))
return FALSE;
nr_stats = virDomainMemoryStats (dom, stats, VIR_DOMAIN_MEMORY_STAT_NR, 0);
if (nr_stats == -1) {
vshError(ctl, _("Failed to get memory statistics for domain %s"), name);
virDomainFree(dom);
return FALSE;
}
for (i = 0; i < nr_stats; i++) {
if (stats[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_IN)
vshPrint (ctl, "swap_in %llu\n", stats[i].val);
if (stats[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_OUT)
vshPrint (ctl, "swap_out %llu\n", stats[i].val);
if (stats[i].tag == VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT)
vshPrint (ctl, "major_fault %llu\n", stats[i].val);
if (stats[i].tag == VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT)
vshPrint (ctl, "minor_fault %llu\n", stats[i].val);
if (stats[i].tag == VIR_DOMAIN_MEMORY_STAT_UNUSED)
vshPrint (ctl, "unused %llu\n", stats[i].val);
if (stats[i].tag == VIR_DOMAIN_MEMORY_STAT_AVAILABLE)
vshPrint (ctl, "available %llu\n", stats[i].val);
}
virDomainFree(dom);
return TRUE;
}
/*
* "suspend" command
*/
@ -7286,6 +7340,7 @@ static const vshCmdDef commands[] = {
{"domstate", cmdDomstate, opts_domstate, info_domstate},
{"domblkstat", cmdDomblkstat, opts_domblkstat, info_domblkstat},
{"domifstat", cmdDomIfstat, opts_domifstat, info_domifstat},
{"dommemstats", cmdDomMemStats, opts_dommemstats, info_dommemstats},
{"domxml-from-native", cmdDomXMLFromNative, opts_domxmlfromnative, info_domxmlfromnative},
{"domxml-to-native", cmdDomXMLToNative, opts_domxmltonative, info_domxmltonative},
{"dumpxml", cmdDumpXML, opts_dumpxml, info_dumpxml},