[libvirt] [PATCHv2 2/2] Introduce command 'virsh domstats --memory' for reporting memory BW
Wang Huaqiang
huaqiang.wang at intel.com
Thu Jan 2 10:45:05 UTC 2020
Introduce an option '--memory' for showing memory related
information. The memory bandwidth infomatio is listed as:
Domain: 'libvirt-vm'
memory.bandwidth.monitor.count=4
memory.bandwidth.monitor.0.name=vcpus_0-4
memory.bandwidth.monitor.0.vcpus=0-4
memory.bandwidth.monitor.0.node.count=2
memory.bandwidth.monitor.0.node.0.id=0
memory.bandwidth.monitor.0.node.0.bytes.total=10208067584
memory.bandwidth.monitor.0.node.0.bytes.local=4807114752
memory.bandwidth.monitor.0.node.1.id=1
memory.bandwidth.monitor.0.node.1.bytes.total=8693735424
memory.bandwidth.monitor.0.node.1.bytes.local=5850161152
memory.bandwidth.monitor.1.name=vcpus_7
memory.bandwidth.monitor.1.vcpus=7
memory.bandwidth.monitor.1.node.count=2
memory.bandwidth.monitor.1.node.0.id=0
memory.bandwidth.monitor.1.node.0.bytes.total=853811200
memory.bandwidth.monitor.1.node.0.bytes.local=290701312
memory.bandwidth.monitor.1.node.1.id=1
memory.bandwidth.monitor.1.node.1.bytes.total=406044672
memory.bandwidth.monitor.1.node.1.bytes.local=229425152
Signed-off-by: Wang Huaqiang <huaqiang.wang at intel.com>
---
docs/manpages/virsh.rst | 22 ++++++-
include/libvirt/libvirt-domain.h | 1 +
src/libvirt-domain.c | 21 +++++++
src/qemu/qemu_driver.c | 103 +++++++++++++++++++++++++++++++
tools/virsh-domain-monitor.c | 7 +++
5 files changed, 152 insertions(+), 2 deletions(-)
diff --git a/docs/manpages/virsh.rst b/docs/manpages/virsh.rst
index fea0527caf..d0f9e15c38 100644
--- a/docs/manpages/virsh.rst
+++ b/docs/manpages/virsh.rst
@@ -2186,7 +2186,7 @@ domstats
domstats [--raw] [--enforce] [--backing] [--nowait] [--state]
[--cpu-total] [--balloon] [--vcpu] [--interface]
- [--block] [--perf] [--iothread]
+ [--block] [--perf] [--iothread] [--memory]
[[--list-active] [--list-inactive]
[--list-persistent] [--list-transient] [--list-running]y
[--list-paused] [--list-shutoff] [--list-other]] | [domain ...]
@@ -2205,7 +2205,7 @@ behavior use the *--raw* flag.
The individual statistics groups are selectable via specific flags. By
default all supported statistics groups are returned. Supported
statistics groups flags are: *--state*, *--cpu-total*, *--balloon*,
-*--vcpu*, *--interface*, *--block*, *--perf*, *--iothread*.
+*--vcpu*, *--interface*, *--block*, *--perf*, *--iothread*, *--memory*.
Note that - depending on the hypervisor type and version or the domain state
- not all of the following statistics may be returned.
@@ -2372,6 +2372,24 @@ not available for statistical purposes.
* ``iothread.<id>.poll-shrink`` - polling time shrink value. A value of
(zero) indicates shrink is managed by hypervisor.
+*--memory* returns:
+
+* ``memory.bandwidth.monitor.count`` - the number of memory bandwidth
+ monitors for this domain
+* ``memory.bandwidth.monitor.<num>.name`` - the name of monitor <num>
+* ``memory.bandwidth.monitor.<num>.vcpus`` - the vcpu list of monitor <num>
+* ``memory.bandwidth.monitor.<num>.node.count`` - the number of memory
+ controller in monitor <num>
+* ``memory.bandwidth.monitor.<num>.node.<index>.id`` - host allocated memory
+ controller id for controller <index> of monitor <num>
+* ``memory.bandwidth.monitor.<num>.node.<index>.bytes.local`` - the accumulative
+ bytes consumed by @vcpus that passing through the memory controller in the
+ same processor that the scheduled host CPU belongs to.
+* ``memory.bandwidth.monitor.<num>.node.<index>.bytes.total`` - the total
+ bytes consumed by @vcpus that passing through all memory controllers, either
+ local or remote controller.
+
+
Selecting a specific statistics groups doesn't guarantee that the
daemon supports the selected group of stats. Flag *--enforce*
forces the command to fail if the daemon doesn't support the
diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
index e60003978a..78532c0eb8 100644
--- a/include/libvirt/libvirt-domain.h
+++ b/include/libvirt/libvirt-domain.h
@@ -2160,6 +2160,7 @@ typedef enum {
VIR_DOMAIN_STATS_BLOCK = (1 << 5), /* return domain block info */
VIR_DOMAIN_STATS_PERF = (1 << 6), /* return domain perf event info */
VIR_DOMAIN_STATS_IOTHREAD = (1 << 7), /* return iothread poll info */
+ VIR_DOMAIN_STATS_MEMORY= (1 << 8), /* return domain memory info */
} virDomainStatsTypes;
typedef enum {
diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
index 793eceb39f..eb66999f07 100644
--- a/src/libvirt-domain.c
+++ b/src/libvirt-domain.c
@@ -11640,6 +11640,27 @@ virConnectGetDomainCapabilities(virConnectPtr conn,
* hypervisor to choose how to shrink the
* polling time.
*
+ * VIR_DOMAIN_STATS_MEMORY:
+ * Return memory bandwidth statistics and the usage information. The typed
+ * parameter keys are in this format:
+ *
+ * "memory.bandwidth.monitor.count" - the number of memory bandwidth
+ * monitors for this domain
+ * "memory.bandwidth.monitor.<num>.name" - the name of monitor <num>
+ * "memory.bandwidth.monitor.<num>.vcpus" - the vcpu list of monitor <num>
+ * "memory.bandwidth.monitor.<num>.node.count" - the number of memory
+ * controller in monitor <num>
+ * "memory.bandwidth.monitor.<num>.node.<index>.id" - host allocated memory
+ * controller id for controller
+ * <index> of monitor <num>
+ * "memory.bandwidth.monitor.<num>.node.<index>.bytes.local" - the
+ * accumulative bytes consumed by @vcpus that passing
+ * through the memory controller in the same processor
+ * that the scheduled host CPU belongs to.
+ * "memory.bandwidth.monitor.<num>.node.<index>.bytes.total" - the total
+ * bytes consumed by @vcpus that passing through all
+ * memory controllers, either local or remote controller.
+ *
* Note that entire stats groups or individual stat fields may be missing from
* the output in case they are not supported by the given hypervisor, are not
* applicable for the current state of the guest domain, or their retrieval
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index ad6f3130ae..d91adcf52f 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -20649,6 +20649,9 @@ qemuDomainGetResctrlMonData(virQEMUDriverPtr driver,
features = caps->host.cache.monitor->features;
break;
case VIR_RESCTRL_MONITOR_TYPE_MEMBW:
+ if (caps->host.memBW.monitor)
+ features = caps->host.memBW.monitor->features;
+ break;
case VIR_RESCTRL_MONITOR_TYPE_UNSUPPORT:
case VIR_RESCTRL_MONITOR_TYPE_LAST:
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
@@ -20701,6 +20704,94 @@ qemuDomainGetResctrlMonData(virQEMUDriverPtr driver,
}
+static int
+qemuDomainGetStatsMemoryBandwidth(virQEMUDriverPtr driver,
+ virDomainObjPtr dom,
+ virTypedParamListPtr params)
+{
+ virQEMUResctrlMonDataPtr *resdata = NULL;
+ char **features = NULL;
+ size_t nresdata = 0;
+ size_t i = 0;
+ size_t j = 0;
+ size_t k = 0;
+ int ret = -1;
+
+ if (!virDomainObjIsActive(dom))
+ return 0;
+
+ if (qemuDomainGetResctrlMonData(driver, dom, &resdata, &nresdata,
+ VIR_RESCTRL_MONITOR_TYPE_MEMBW) < 0)
+ goto cleanup;
+
+ if (nresdata == 0)
+ return 0;
+
+ if (virTypedParamListAddUInt(params, nresdata,
+ "memory.bandwidth.monitor.count") < 0)
+ goto cleanup;
+
+ for (i = 0; i < nresdata; i++) {
+ if (virTypedParamListAddString(params, resdata[i]->name,
+ "memory.bandwidth.monitor.%zu.name",
+ i) < 0)
+ goto cleanup;
+
+ if (virTypedParamListAddString(params, resdata[i]->vcpus,
+ "memory.bandwidth.monitor.%zu.vcpus",
+ i) < 0)
+ goto cleanup;
+
+ if (virTypedParamListAddUInt(params, resdata[i]->nstats,
+ "memory.bandwidth.monitor.%zu.node.count",
+ i) < 0)
+ goto cleanup;
+
+
+ for (j = 0; j < resdata[i]->nstats; j++) {
+ if (virTypedParamListAddUInt(params, resdata[i]->stats[j]->id,
+ "memory.bandwidth.monitor.%zu."
+ "node.%zu.id",
+ i, j) < 0)
+ goto cleanup;
+
+
+ features = resdata[i]->stats[j]->features;
+ for (k = 0; features[k]; k++) {
+ if (STREQ(features[k], "mbm_local_bytes")) {
+ /* The accumulative data passing through local memory
+ * controller is recorded with 64 bit counter. */
+ if (virTypedParamListAddULLong(params,
+ resdata[i]->stats[j]->vals[k],
+ "memory.bandwidth.monitor."
+ "%zu.node.%zu.bytes.local",
+ i, j) < 0)
+ goto cleanup;
+ }
+
+ if (STREQ(features[k], "mbm_total_bytes")) {
+ /* The accumulative data passing through local and remote
+ * memory controller is recorded with 64 bit counter. */
+ if (virTypedParamListAddULLong(params,
+ resdata[i]->stats[j]->vals[k],
+ "memory.bandwidth.monitor."
+ "%zu.node.%zu.bytes.total",
+ i, j) < 0)
+ goto cleanup;
+ }
+ }
+ }
+ }
+
+ ret = 0;
+ cleanup:
+ for (i = 0; i < nresdata; i++)
+ qemuDomainFreeResctrlMonData(resdata[i]);
+ VIR_FREE(resdata);
+ return ret;
+}
+
+
static int
qemuDomainGetStatsCpuCache(virQEMUDriverPtr driver,
virDomainObjPtr dom,
@@ -20809,6 +20900,17 @@ qemuDomainGetStatsCpu(virQEMUDriverPtr driver,
}
+static int
+qemuDomainGetStatsMemory(virQEMUDriverPtr driver,
+ virDomainObjPtr dom,
+ virTypedParamListPtr params,
+ unsigned int privflags G_GNUC_UNUSED)
+
+{
+ return qemuDomainGetStatsMemoryBandwidth(driver, dom, params);
+}
+
+
static int
qemuDomainGetStatsBalloon(virQEMUDriverPtr driver,
virDomainObjPtr dom,
@@ -21478,6 +21580,7 @@ static struct qemuDomainGetStatsWorker qemuDomainGetStatsWorkers[] = {
{ qemuDomainGetStatsBlock, VIR_DOMAIN_STATS_BLOCK, true },
{ qemuDomainGetStatsPerf, VIR_DOMAIN_STATS_PERF, false },
{ qemuDomainGetStatsIOThread, VIR_DOMAIN_STATS_IOTHREAD, true },
+ { qemuDomainGetStatsMemory, VIR_DOMAIN_STATS_MEMORY, false },
{ NULL, 0, false }
};
diff --git a/tools/virsh-domain-monitor.c b/tools/virsh-domain-monitor.c
index c2f157ad6b..7b9b9c57b0 100644
--- a/tools/virsh-domain-monitor.c
+++ b/tools/virsh-domain-monitor.c
@@ -2111,6 +2111,10 @@ static const vshCmdOptDef opts_domstats[] = {
.type = VSH_OT_BOOL,
.help = N_("report domain IOThread information"),
},
+ {.name = "memory",
+ .type = VSH_OT_BOOL,
+ .help = N_("report domain memory usage"),
+ },
{.name = "list-active",
.type = VSH_OT_BOOL,
.help = N_("list only active domains"),
@@ -2227,6 +2231,9 @@ cmdDomstats(vshControl *ctl, const vshCmd *cmd)
if (vshCommandOptBool(cmd, "iothread"))
stats |= VIR_DOMAIN_STATS_IOTHREAD;
+ if (vshCommandOptBool(cmd, "memory"))
+ stats |= VIR_DOMAIN_STATS_MEMORY;
+
if (vshCommandOptBool(cmd, "list-active"))
flags |= VIR_CONNECT_GET_ALL_DOMAINS_STATS_ACTIVE;
--
2.23.0
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