On 10/22/18 4:01 AM, Wang Huaqiang wrote:
Cache Monitoring Technology (aka CMT) provides the capability to report cache utilization information of system task.
This patch introduces the concept of resctrl monitor through data structure virResctrlMonitor.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com> --- src/libvirt_private.syms | 1 + src/util/virresctrl.c | 79 ++++++++++++++++++++++++++++++++++++++++++++---- src/util/virresctrl.h | 9 ++++++ 3 files changed, 83 insertions(+), 6 deletions(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 335210c..d2573c5 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms
[...]
@@ -275,6 +281,18 @@ virResctrlInfoMonFree(virResctrlInfoMonPtr mon) * a sparse array to represent whether a memory bandwidth allocation happens * on corresponding node. The available memory controller number is collected * in 'virResctrlInfo'. + * + * =====Cache monitoring technology (CMT)===== + * + * Cache monitoring technology is used to perceive how many cache the process + * is using actually. virResctrlMonitor represents the resource control + * monitoring group, it is supported to monitor resource utilization + * information on granularity of vcpu. + * + * From hardware perspective, cache monitoring technology (CMT), memory
From a
+ * bandwidth technology (MBM), as well as the CAT and MBA, are all orthogonal + * features. The monitor will be created under the scope of default resctl
*resctrl
+ * group if no specific CAT or MBA entries are provided for the guest." */ struct _virResctrlAllocPerType { /* There could be bool saying whether this is set or not, but since everything @@ -320,6 +338,29 @@ struct _virResctrlAlloc { char *path; };
+/* + * virResctrlMonitor is the data structure for resctrl monitor. Resctrl + * monitor represents a resctrl monitoring group, which can be used to + * monitor the resource utilization information for either cache or + * memory bandwidth. + */ +struct _virResctrlMonitor { + virObject parent; + + /* In resctrl, each monitor is associated with one specific allocation,
Each ResctrlMonitor is associated...
+ * either the allocation under / sys / fs / resctrl or allocation of the
either the root directory allocation /sys/fs/resctrl or a specific allocation defined under the root directory. With these simple changes that I can make for you, Reviewed-by: John Ferlan <jferlan@redhat.com> John [...]