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    Supported monitoring metrics for Memorystore for Memcached

    This page lists the metrics available for Memorystore for Memcached, and describes what each metric tracks. These metrics are available in both the Google Cloud console and in Cloud Monitoring.

    To learn how to view metrics using Cloud Monitoring, see Monitoring Memcached instances .

    Memcached metrics

    Cloud Monitoring metric name
    Google Cloud console metric name
    Full endpoint URL
    Description
    Active Connections
    Active Connections
    memcache.googleapis.com/node/active_connections
    Number of active client connections to the Memcached node.
    CPU Usage Percent
    CPU Usage Percent
    memcache.googleapis.com/node/cpu/utilization
    CPU usage percent by Memcached node.
    CPU Usage Time
    CPU Usage Time
    memcache.googleapis.com/node/cpu/usage_time
    CPU usage time by Memcached processes, grouped by mode, e.g. user/kernel.
    Eviction Count
    Eviction Count
    memcache.googleapis.com/node/eviction_count
    Count of items getting evicted from a Memcached node.
    Hit Ratio
    Hit Ratio
    memcache.googleapis.com/node/hit_ratio
    Ratio of cache hits to cache misses for the Memcached node excluding set operations. Reported as a percentage.
    Items
    Items
    memcache.googleapis.com/node/items
    Count of items stored in the Memcached node.
    Memory Usage
    • Memory Usage
    • Unused Memory
    memcache.googleapis.com/node/cache_memory
    The memory usage of all of the nodes in your cluster, broken down by:
    • used memory
    • unused memory
    Memcached stores items in memory in chunks and slab classes. Depending on your item size distribution, it's possible that some memory will never be used. See the open source Memcached documentation to understand how memory management works in Memcached.
    Operation Count
    • Operation Count
    • Get Operations
    • Set Operations
    • Delete Operations
    memcache.googleapis.com/node/operation_count
    Count of the operations sent to a Memcached node, broken down by the response type:
    • get operations
    • set operations
    • delete operations
    Received Bytes
    Received Bytes
    memcache.googleapis.com/node/received_bytes_count
    Bytes of memory received by the Memcached node from the network. These are the Memcached requests coming from client VMs.
    Sent Bytes
    Sent Bytes
    memcache.googleapis.com/node/sent_bytes_count
    Bytes of memory sent by the Memcache node to the network. These are the Memcache responses.
    System Memory Utilization
    System Memory Utilization
    memcache.googleapis.com/node/memory/utilization
    Shows you what percentage of the total system memory is being used by items in the cache and memory overhead. See System Memory Utilization for more information.
    Uptime
    Uptime
    memcache.googleapis.com/node/uptime
    How long the Memcached node has been up, in seconds.

    Known Issues

    • For the operation_count metric, the gat/gats command currently does not show up in the Google Cloud console or in Cloud Monitoring. OSS Memcached doesn't update its get counters on gat/gats at this point.
    • For the operation_count metric, the touch command does not currently get reported.
    • For the operation_count metric, cas operations are reported under set operations.

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