Container Metrics

To access the Containers Dashboard, select: Home > Servers > Containers.

The Containers Dashboard shows resource utilization metrics of your containerized applications and the underlying host machine. You can access the Containers Dashboard from the Servers tab in the Controller UI. The Containers page lists all monitored containers used by an application that is registered to the Controller.

Container Metrics

CPU

Name Description Default Monitoring Mode
%Busy (Container) Percentage of time the CPU was busy processing system or user requests from this container; this metric includes CPU Stolen time. KPI
%Busy Scaled

If the -cpus=<value> option is set in the container, this metric measures the scaled value of the CPUs property. If this value is not set, this metric measures the scaled value of the Logical CPUs property.

To enable CPU Scaling:

    • Log in to the Administration Console: http://<controller host>:<port>/controller/admin.jsp
    • Select the user account you want.
    • Select Add Property and add: key = sim.docker.container.cpuScaling value = true
 KPI
Logical Cores Number of logical cores on the host machine that are available to the container. KPI
Shares The -c or cpu-shares setting used to start the container. KPI
Throttle Count Number of times the container CPU is throttled. Use Advanced mode to view this metric as Throttled Time. If Throttled Time is less and the container is limited on computation, then this metric is available for you to review.

KPI
Throttled Time (ms)

Total amount of time the container CPU was throttled but did not receive enough host CPU. High throttle times indicate that the -c or cpu-shares setting (used to start the container) was too low.

 KPI
Total % Average utilization, of all available CPUs, by the container.

KPI

Disks

Name Description Default Monitoring Mode
Average IO Utilization % Average disk utilization for read/write operations. This metric may be unavailable on some platforms. KPI
< disk > Reads/sec Number of read operations by the container on < disk >. Diagnostic
< disk > Writes/sec Number of write operations by the container on < disk >. Diagnostic
KB Read/sec The rate of data read by the container from all disks and partitions. KPI
KB Written/sec The rate of data written by the container to all disks and partitions. KPI
MB Reads/sec (MB) Number of read operations by the container on all disks and partitions. KPI
MB Writes/sec Number of write operations by the container on all disks and partitions. KPI
Queue Size

Average number of container requests queued during the time bucket. Consistently high queue sizes indicate that the container is not receiving enough IO resources. This metric may be unavailable on some platforms.

 KPI

Memory

Name Description Default Monitoring Mode
Cache Size (MB) Total amount of data cached in memory.

Diagnostic
Failed Count Number of times a memory allocation failure occurred because it exceeded the pre-set memory limit for that container; or, number of times the hard limit for the container was reached. KPI
Page Major Fault Count Number of major page faults caused by the container. Docker metric is pgmajfault. A high rate of page faults could indicate that the specified memory constraints for the container are too low. KPI
Reservation Soft limit based on the --memory-reservation used to start the container. KPI
Resident Set Size (MB) Total amount of memory that belongs to stacks, heaps, and anonymous memory maps. KPI
Usage Memory usage by the container, in bytes. KPI
Used % Memory utilization by the container as a percentage of the memory hard limit, based on the --memory option used to start the container. KPI
Used MB Memory utilization by the container, in MB. KPI

Network

Name Description Default Monitoring Mode
Count (KB) Network Volume, count (KB), incoming from an external network and outgoing to an external network.

KPI
Rate (KB/s)

Network Rate, rate (KB/s), incoming from an external network and outgoing to an external network.

Diagnostic
Incoming (KB) Network traffic received by the container. KPI
Outgoing (KB) Network traffic sent by the container. KPI
Incoming (KB/sec) Rate of network traffic received by the container. Diagnostic
Outgoing (KB/sec) Rate of network traffic sent by the container. Diagnostic
Incoming Packets Number of packets received by the container. Diagnostic
Outgoing Packets Number of packets sent by the container. Diagnostic
Incoming Packets Dropped Number of incoming packets dropped before reaching the container. A high count of dropped packets may indicate high congestion or an issue on the network path. KPI
Outgoing Packets Dropped Number of outgoing packets dropped after leaving the container. A high count of dropped packets may indicate high congestion or an issue on the network path. KPI
Incoming Errors Number of packets received with errors. KPI
Outgoing Errors Number of packets sent with errors. KPI
< eth0 > Incoming Errors Number of collision errors when < eth0 > could not receive a frame due to a problem on the interface. Diagnostic
< eth0 > Outgoing Errors Number of collision errors when < eth0 > could not send a frame due to a problem on the interface. Diagnostic
< eth0 > Incoming KB Average KB of traffic received on < eth0 >. Diagnostic
< eth0 > Outgoing KB Average KB of traffic sent on < eth0 >. Diagnostic
< eth0 > Incoming KB/sec Average rate of traffic received on < eth0 >. Diagnostic
< eth0 > Outgoing KB/sec Average rate of traffic sent on < eth0 >. Diagnostic
< eth0 >Incoming Errors Number of packets received on < eth0 > with errors. Diagnostic
< eth0 > Outgoing Errors Number of packets sent on < eth0 > with errors. Diagnostic
< eth0 > Incoming Packets Dropped Number of incoming packets dropped before reaching < eth0 >. A high count of dropped packets may indicate high congestion or an issue on the network path. Diagnostic
< eth0 > Outgoing Packets Dropped Number of outgoing packets dropped after leaving < eth0 >. A high count of dropped packets may indicate high congestion or an issue on the network path. Diagnostic