Re: [libvirt] [PATCHv8 02/17] util: Introduce resctrl monitor for CMT

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(a)intel.com&gt; --- src/libvirt_private.syms | 1 + src/util/virresctrl.c | 80 ++++++++++++++++++++++++++++++++++++++++++++---- src/util/virresctrl.h | 9 ++++++ 3 files changed, 84 insertions(+), 6 deletions(-)

# util/virrotatingfile.h diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c index 7339e9b..e3c84a3 100644 --- a/src/util/virresctrl.c +++ b/src/util/virresctrl.c

+ * + * =====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 hardware

+ * bandwidth technology (MBM), as well as the CAT and MBA, are all orthogonal + * features. The monitor will be created under the scope of default resctrl + * group if no specific CAT or MBA entries are provided for the guest." */