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DataStax Enterprise OpsCenter 6.8

    • About OpsCenter
      • New features
      • Key features
      • Labs features
        • Exporting and importing dashboard presets
        • Adding a Swift CLI backup location
        • Configuring named route linking
        • Viewing logs from node details
      • Architecture overview
      • OpsCenter policy for DDAC and OSS
      • Feedback about OpsCenter
    • Release notes
    • Installing OpsCenter
    • Upgrading OpsCenter
    • OpsCenter recommended settings
      • OpsCenter basic configurations
      • Cluster synchronization settings
      • Backup Service settings
      • Knowledge Base articles
    • Configuring OpsCenter
      • OpsCenter Security
        • OpsCenter SSL overview
          • Enabling/Disabling HTTPS for the OpsCenter server
          • Configuring SSL/TLS between OpsCenter and the DataStax Agents
          • Connect to DSE with client-to-node encryption in OpsCenter and the DataStax Agents
          • Editing/OpsCenter cluster connections for authentication or encryption
          • SSL configuration options for OpsCenter
        • Configuring OpsCenter role-based security
        • Encrypting sensitive configuration values
          • Activating configuration encryption
          • Creating a system key to encrypt sensitive configuration values
          • Manually encrypting a configuration value
          • Deactivating configuration encryption
        • Authenticating with LDAP
          • Configuring LDAP
          • Adding a role for an LDAP user
          • Troubleshooting OpsCenter LDAP
        • Kerberos authentication
          • Configuring OpsCenter for Kerberos authentication
          • OpsCenter Kerberos configuration options
          • Troubleshooting Kerberos in OpsCenter
        • Configuring security logging
      • Configuring alerts for events
        • SNMP alerts overview
          • Enabling SNMP alerts
        • Enabling SMTP email alerts
        • Enabling alerts posted to a URL
          • Verifying that events are posting correctly
          • Posting URL alerts to a Slack channel
      • Configuring data collection and expiration
        • Controlling data collection
        • Storing collection data on a separate cluster
      • OpsCenter DSE definitions files updates
        • Updating and configuring definitions files properties
      • Automatic failover overview
        • Enabling automatic failover
        • Failover configuration options reference
      • Backing up critical configuration data
      • Configuring named route linking
      • Configuring the OpsCenter JVM
      • Configuring the DataStax Agent JVM
        • Setting and securing the tmp directory for the DataStax Agent
        • Encrypting JMX communications
      • Changing the replication strategy for the OpsCenter keyspace
      • Configuration files for OpsCenter
        • OpsCenter configuration properties
          • Statistics reporter properties
        • Cluster configuration properties
          • Cassandra connection properties
          • Metrics Collection Properties
        • DataStax Agent configuration
        • OpsCenter logback.xml configuration
      • Customize scripts for starting and stopping DataStax Enterprise
      • Example configuration scenarios
        • Configuring for multiple regions
        • Configuring for very large clusters
    • Using OpsCenter
      • OpsCenter workspace overview
        • Ring View
        • List View
        • DataStax Agents Status View
        • Nodes Detail View
          • Node management operations
      • Configuring alerts
        • Adding an alert for agent issues
          • Troubleshooting DataStax Agent Issues
        • Adding an alert for down nodes
        • Configuring an alert for KMIP errors
        • Configuring an alert for percentage of in-memory usage
        • Configuring an alert for percentiles
      • Monitoring node operations
        • Viewing the Spark Console
        • Monitoring in-memory usage
        • Viewing logs from node details
      • Managing and maintaining nodes
        • Running cleanup
        • Performing garbage collection
        • Running compaction
        • Flushing tables
        • Decommission a node
        • Draining a node
        • Moving a node
        • Running a manual repair
        • Configure an alias for a node
      • Starting and stopping DSE
        • Starting DSE on a node
        • Stopping DSE on a node
        • Restarting DSE on a node
      • Managing keyspaces and tables
        • Keyspaces
          • Managing a keyspace
          • Managing tables
        • Browsing data deprecated
      • Cluster administration
        • Adding an existing cluster
        • Disconnecting a cluster from OpsCenter and Lifecycle Manager
        • Rebalancing a cluster overview
          • Rebalancing a cluster
          • Configuring an alert for rebalancing a cluster
        • Restarting a cluster
        • Changing the display name of a cluster
        • Downloading diagnostic data
          • Diagnostic tarball reference
          • Creating an alternate directory for diagnostic information
        • Downloading Insights diagnostic data
        • Generating a cluster report
      • OpsCenter Metrics Tooltips Reference
        • Dashboard performance metrics
        • Performance metrics overview
          • Working with metrics performance graphs
          • Organizing performance metrics presets
          • Exporting and importing dashboard presets
        • Cluster performance metrics
        • Pending task metrics
          • Pending task metrics for writes
          • Pending task metrics for reads
          • Pending task metrics for cluster operations
        • Table performance metrics
        • Tiered storage performance metrics
          • Configuring tiered storage metric graphs
          • Configuring tiered storage alerts
        • Message latency metrics
          • Adding dashboard graphs for datacenter and node messaging latency
          • Adding alerts for DC and node message latency
        • Search performance metrics
        • Graph metrics
        • NodeSync metrics
        • Thread Pool (TP) metrics
          • Viewing TP stats in Node Details
          • Enabling network backpressure
        • Dropped Messages metrics
        • Operating system performance metrics
        • Alert metrics
          • Advanced system alert metrics
    • OpsCenter 6.8 Reference
      • OpsCenter ports reference
      • Installation and configuration locations
        • Default file locations for package installations
        • Default file locations tarball installations
      • Starting, stopping, and restarting OpsCenter
        • Startup log for OpsCenter
      • Stopping, starting, and restarting DataStax Agents
    • DSE Management Services
      • Backup Service
        • Quick Video Tour: Backup Service
        • Adding a backup location
          • Adding a local file system backup location
          • Adding an Amazon S3 backup location
          • Adding an Azure backup location
        • Backing up data
          • Backing up a cluster
          • Backing up to Amazon S3
          • Backing up and restoring DataStax Graphs in OpsCenter
          • Viewing backup and restore history
          • Synchronizing backup data after an upgrade
          • Deleting backup data
        • Restoring a cluster
          • Restoring from a backup
          • Restoring a backup to a specific point-in-time
          • Monitoring sufficient disk space for restoring backups
        • Cloning cluster data
          • Cloning cluster data from a defined other location
          • Cloning cluster data from clusters managed by the same OpsCenter instance
        • Configuring the Backup Service
          • Configuring commit log backups
          • Configuring the free disk space threshold for backups
          • Configuring encryption key storage for backups
          • Configuring custom scripts to run before and after backups
          • Configuring restore to continue after a download failure
          • Backup Service configuration options
        • Troubleshooting Backup Service errors
      • NodeSync Service
        • Enabling NodeSync
        • Configuring the NodeSync refresh data interval
        • Viewing NodeSync Status
        • Configuring the NodeSync rate using LCM
        • NodeSync metrics
      • Repair Service
        • Repair Service overview
          • Subrange repairs overview
          • Distributed subrange overview
          • Incremental repairs overview
          • Repair Service behavior during environment changes
          • Estimating remaining repair time
        • Turning the Repair Service on
        • Turning the Repair Service off
        • Viewing repair status
        • Basic repair configuration
          • Configuring incremental repairs
          • Excluding keyspaces or tables from subrange repairs
          • Enabling distributed subrange repairs
          • Logging for the Repair Service
          • Basic Repair Service configuration reference
        • Advanced repair configuration
          • Adjusting or disabling the throttle for subrange repairs
          • Running validation compaction sequentially
          • Advanced Repair Service configuration reference
        • Expert repair configuration
          • Setting the maximum for parallel subrange repairs
          • Expert Repair Service configuration reference
          • Tuning Repair Service for multi-datacenter environments
        • Expedited Repair Service configuration
        • Troubleshoot Repair Service errors
        • Learn more about repairs
      • Capacity Service
        • Forecasting trends for metric graphs
        • Advanced forecast configuration
      • Best Practice Service
        • Configuring Best Practice service rules
        • Monitoring the results of Best Practice service scans
        • Best Practice Rules Reference
      • Performance Service
        • Performance Service Overview
        • Why use the OpsCenter Performance Service?
        • Enabling the OpsCenter Performance Service
        • Disabling the OpsCenter Performance Service
        • Setting permissions for the OpsCenter Performance Service
        • Tuning a database cluster with the Performance Service
          • Identifying and tuning slow queries
    • Identifying poorly performing tables
    • Monitoring node thread pool statistics
    • Troubleshooting OpsCenter
    • Lifecycle Manager
      • Overview of Lifecycle Manager
        • Supported capabilities
        • Defining the topology
        • Using configuration profiles
        • Defining repositories
        • Running jobs in LCM
          • Job types in LCM
          • Job concurrency in LCM
        • Monitoring job status
      • Installing DSE using LCM
        • Accessing OpsCenter Lifecycle Manager
        • Creating custom data directories
        • Adding SSH credentials
        • Adding a configuration profile
        • Adding a repository
        • Defining the cluster topology
          • Adding a cluster
          • Adding a datacenter
          • Adding a node
        • Running an installation job
        • Viewing job details
        • Using LCM in an offline environment
          • Required software for offline DSE installs
          • Downloading DSE in an offline environments
      • Managing SSH credentials
        • Adding SSH credentials
        • Editing SSH credentials
        • Deleting SSH credentials
        • Configuring SSH connection thresholds for LCM jobs
      • Managing configuration profiles
        • Adding a configuration profile
        • Editing a configuration profile
        • Customizing configuration profile files
        • Cloning a configuration profile
        • Deleting a configuration profile
        • Configuring an HTTP or HTTPS proxy
      • Configuring repositories
        • Adding a repository
        • Editing a repository
        • Deleting a repository
      • Defining DSE topologies
        • Managing cluster topologies
          • Adding a cluster
          • Editing a cluster
          • Deleting a cluster
          • Importing a cluster topology
        • Managing datacenter topologies
          • Adding a datacenter
          • Editing a datacenter
          • Deleting a datacenter
        • Managing node topologies
          • Adding a node
          • Editing a node
          • Deleting a node
      • Running LCM jobs
        • Running an installation job
        • Running an configure job
        • Running an upgrade job
          • Example: Upgrading DSE to a minor release using LCM
        • Aborting a job
        • Adjusting idle timeout
      • Configuring Java options
        • Choosing a Java vendor in LCM
        • Managing Java installs
        • Configuring JVM options for DSE using LCM
      • Configuring DSE security using LCM
        • Native transport authentication schemes and limitations in LCM
          • Configuring row-level access control
        • Configuring SSL/TLS for DSE
        • Configuring a JMX Connection to DSE
      • Lifecycle Manager configuration options
      • Configuration known issues and limitations
      • Using advanced configurations with LCM
        • Exporting metrics collection
        • Configuring AlwaysOn SQL
        • Configuring DSE Graph
        • Configuring the NodeSync rate
        • Configuring tiered storage
    • OpsCenter API reference for developers
      • Enable and access the Datastax Agent API
      • Authentication
      • OpsCenter configuration
      • Retrieving cluster and node information
      • Performing Cluster Operations
      • Managing Keyspaces and Tables
      • Retrieving Metric Data
      • Managing Events and Alerts
      • Schedule management
      • Backup Management and Restoring from Backups
      • Best Practice Rules
      • Hadoop
      • Spark
      • Managing Performance Service Configuration
      • User Interface
      • Agent Install and Status
      • Cluster Lifecycle Management
      • DataStax Agent API example curl commands
  • DataStax Enterprise OpsCenter 6.8
  • Using OpsCenter
  • OpsCenter Metrics Tooltips Reference
  • Thread Pool (TP) metrics

Thread Pool (TP) metrics

Thread Pool metrics reference grouped by similar subjects. Thread Pool metrics are prefixed with TP.

View thread pool stats in the Thread Pool Stats pane within the Node Details dialog.

Alerts and dashboard graphs can be set up for thread pool metrics in OpsCenter Monitoring.

Thread Pools are also monitored in the OpsCenter Performance Service. Refer to the Thread Pool Statistics for more information.

To view a list of keys that correspond to thread pool metrics collected by OpsCenter, refer to the Thread Pool Metrics Keys in the OpsCenter API documentation.

Thread Pool Stats can also be viewed by using the nodetool tpstats command. For more information, see Thread pool and read/write latency statistics.

Authentication

  • TP: Authentication Active

    Authentication Active

  • TP: Authentication Completed

    Authentication Completed

Authorization

  • TP: Authorization Active

    Authorization Active

  • TP: Authorization Completed

    Authorization Completed

Auth-z stage

  • TP: Auth Stage Active

    Auth Stage Active

  • TP: Auth Stage Pending

    Auth Stage Pending

  • TP: Auth Stage Completed

    Auth Stage Completed

Background IO Stages

  • TP: Background IO Stage Active

    Background IO Stage Active

  • TP: Background IO Stage Pending

    Background IO Stage Pending

  • TP: Background IO Stage Completed

    Background IO Stage Completed

Backpressure (Network)

  • TP: Network Backpressure Active

    Network Backpressure Active

  • TP: Network Backpressure Pending

    Network Backpressure Pending

  • TP: Network Backpressure Completed

    Network Backpressure Completed

  • TP: Network Backpressure Total Blocked

    Total Network Backpressure Blocked

Batches

Metrics for batch remove, batch replay, batch store, and batch store response.

  • TP: Batch Remove Active

    Batch Remove Active

  • TP: Batch Remove Pending

    Batch Remove Pending

  • TP: Batch Remove Completed

    Batch Remove Completed

  • TP: Batch Remove Total Blocked

    Total Batch

  • TP: Batch Replay Active

    Batch Replay Active

  • TP: Batch Replay Completed

    Batch Replay Completed

  • TP: Batch Store Active

    Batch Store Active

  • TP: Batch Store Pending

    Batch Store Pending

  • TP: Batch Store Completed

    Batch Store Completed

  • TP: Batch Store Total Blocked

    Total Batch Store Blocked

  • TP: Batch Store Response Active

    Batch Store Response Active

  • TP: Batch Store Response Completed

    Batch Store Response Completed

Cache Cleaning

  • TP: Cache Cleaning Pending

    Tasks pending to clean row caches during a cleanup compaction.

  • TP: Cache Cleaning Active

    Tasks to clean row caches during a cleanup compaction.

  • TP: Cache Cleaning Completed

    Tasks to clean row caches during a cleanup compaction.

Commit Log (Write Await)

  • TP: Write Await Commitlog Segment Active

    Write Await Commitlog Segment Active

  • TP: Write Await Commitlog Sync Active

    Write Await Commitlog Sync Active

  • TP: Write Await Commitlog Segment Completed

    Write Await Commitlog Segment Completed

  • TP: Write Await Commitlog Sync Completed

    Write Await Commitlog Sync Completed

Compaction Executor

  • TP: Compaction Executor Pending

    Pending compactions that are known. This metric could deviate from "pending compactions," which includes an estimate of tasks that these pending tasks might create after completion.

  • TP: Compaction Executor Active

    Active compactions that are known.

  • TP: Compaction Executor Completed

    Completed compactions.

Counter Acquire Lock

  • TP: Counter Acquire Lock Active

    Counter Acquire Lock Active

  • TP: Counter Acquire Lock Completed

    Counter Acquire Lock Completed

Execute Statements

  • TP: Execute Statement Active

    Execute Statement Active

  • TP: Execute Statement Completed

    Execute Statement Completed

Flushes (memtables)

  • TP: Flushes Pending

    Number of memtables queued for the flush process. A flush sorts and writes the memtables to disk.

  • TP: Post Flushes Pending

    Tasks related to the last step in flushing memtables to disk as SSTables. Includes removing unnecessary commitlog files and committing Solr-based secondary indexes.

  • TP: Flushes Active

    Up to memtable_flush_writers concurrent tasks to flush and write the memtables to disk.

  • TP: Post Flushes Active

    Tasks related to the last step in flushing memtables to disk as SSTables. Includes removing unnecessary commitlog files and committing Solr-based secondary indexes.

  • TP: Flushes Completed

    Number of memtables flushed to disk since the nodes start.

  • TP: Post Flushes Completed

    Tasks related to the last step in flushing memtables to disk as SSTables. Includes removing unnecessary commitlog files and committing Solr-based secondary indexes.

Frame Decode

  • TP: Frame Decode Active

    Frame Decode Active

  • TP: Frame Decode Completed

    Frame Decode Completed

Gossip

  • TP: Gossip Tasks Pending

    Number of gossip messages and acknowledgments queued and waiting to be sent or received.

  • TP: Gossip Tasks Active

    Number of gossip messages and acknowledgments actively being sent or received.

  • TP: Gossip Tasks Completed

    Number of gossip messages and acknowledgments recently sent or received.

Hint Dispatch (TPC) and Hint Dispatcher (regular TP)

  • TP: Hint Dispatch Active

    Hint Dispatch Active

  • TP: Hint Dispatch Pending

    Hint Dispatch Pending

  • TP: Hint Dispatch Completed

    Hint Dispatch Completed

  • TP: Hint Dispatch Total Blocked

    Total Hint Dispatch Blocked

  • TP: Hint Dispatcher Active

    Up to max_hints_delivery_threads tasks, each dispatching all hinted handoffs to a host.

  • TP: Hint Dispatcher Pending

    Pending tasks to send the stored hinted handoffs to a host.

  • TP: Hint Dispatcher Completed

    Number of tasks to transfer hints to a host that have completed.

Hint Response

  • TP: Hint Response Active

    Hint Response Active

  • TP: Hint Response Completed

    Hint Response Completed

Locks

  • TP: Counter Acquire Lock Active

    Counter Acquire Lock Active

  • TP: Counter Acquire Lock Completed

    Counter Acquire Lock Completed

LWT (lightweight transactions)

LWT metrics for propose, prepare, and commit. For more information, see Using lightweight transactions.

  • TP: Lwt Propose Pending

    Lwt Propose Pending

  • TP: Lwt Propose Active

    Lwt Propose Active

  • TP: Lwt Propose Completed

    Lwt Propose Completed

  • TP: Lwt Prepare Active

    Lwt Prepare Active

  • TP: Lwt Prepare Pending

    Lwt Prepare Pending

  • TP: Lwt Prepare Completed

    Lwt Prepare Completed

  • TP: Lwt Commit Pending

    Lwt Commit Pending

  • TP: Lwt Commit Active

    Lwt Commit Active

  • TP: Lwt Commit Completed

    Lwt Commit Completed

  • TP: Lwt Commit Total Blocked

    Total Lwt Commit Blocked

Memtable memory reclaims

The Memtable-reclaim-memory stats are available within the Thread Pool Stats pane of the Node details dialog.

  • TP: Memtable Reclaims Active

    Waits for current reads to complete and then frees the memory formerly used by the obsoleted memtables.

  • TP: Memtable Reclaims Pending

    Waits for current reads to complete and then frees the memory formerly used by the obsoleted memtables.

  • TP: Memtable Reclaims Completed

    Waits for current reads to complete and then frees the memory formerly used by the obsoleted memtables.

Migrations

  • TP: Migrations Pending

    Number of pending tasks from system methods that modified the schema.

  • TP: Migrations Active

    Number of active tasks from system methods that modified the schema.

  • TP: Migrations Completed

    Number of completed tasks from system methods that modified the schema.

NodeSync Validation

  • TP: NodeSync Validation Active

    NodeSync Validation Active

  • TP: NodeSync Validation Completed

    NodeSync Validation Completed

Reads

  • TP: Read Disk Async Active

    Read Disk Async Active

  • TP: Read Disk Async Completed

    Read Disk Async Completed

  • TP: Read Secondary Index Active

    Read Secondary Index Active

  • TP: Read Secondary Index Completed

    Read Secondary Index Completed

Read Range NodeSync

  • TP: Read Range NodeSync Active

    Read Range NodeSync Active

  • TP: Read Range NodeSync Pending

    Read Range NodeSync Pending

  • TP: Read Range NodeSync Completed

    Read Range NodeSync Completed

  • TP: Read Range NodeSync Total Blocked

    Total Read Range NodeSync Blocked

Writes

  • TP: Write Switch For Memtable Active

    Write Switch For Memtable Active

  • TP: Write Switch For Memtable Completed

    Write Switch For Memtable Completed

Timed Timeout and Timed Unknown

  • TP: Timed Timeout Active

    Timed Timeout Active

  • TP: Timed Timeout Completed

    Timed Timeout Completed

  • TP: Timed Unknown Active

    Timed Unknown Active

  • TP: Timed Unknown Completed

    Timed Unknown Completed

Truncate

  • TP: Truncate Active

    Truncate Active

  • TP: Truncate Completed

    Truncate Completed

Unknown

Unknown thread pool metrics monitor threads for undetermined processes.

  • TP: Unknown Active

    Unknown Active

  • TP: Unknown Completed

    Unknown Completed

View Build Executor

  • TP: View Build Executor Active

    View Build Executor Active

  • TP: View Build Executor Pending

    View Build Executor Pending

  • TP: View Build Executor Completed

    View Build Executor Completed

Write Await Commit Log Segment and Sync

  • TP: Write Await Commitlog Segment Active

    Write Await Commitlog Segment Active

  • TP: Write Await Commitlog Segment Completed

    Write Await Commitlog Segment Completed

  • TP: Write Await Commitlog Sync Active

    Write Await Commitlog Sync Active

  • TP: Write Await Commitlog Sync Completed

    Write Await Commitlog Sync Completed

Write Defragment

  • TP: Write Defragment Active

    Write Defragment Active

  • TP: Write Defragment Pending

    Write Defragment Pending

  • TP: Write Defragment Completed

    Write Defragment Completed

  • TP: Write Defragment Total Blocked

    Total Write Defragment Blocked

Write Internal

  • TP: Write Internal Active

    Write Internal Active

  • TP: Write Internal Completed

    Write Internal Completed

Write Local

  • TP: Write Local Active

    Write Local Active

  • TP: Write Local Pending

    Write Local Pending

  • TP: Write Local Completed

    Write Local Completed

  • TP: Write Local Total Blocked

    Total Write Local Blocked

Write Remote

  • TP: Write Remote Active

    Write Remote Active

  • TP: Write Remote Pending

    Write Remote Pending

  • TP: Write Remote Completed

    Write Remote Completed

  • TP: Write Remote Total Blocked

    Total Write Remote Blocked

  • TP: Write Switch For Memtable Active

    Write Switch For Memtable Active

Write Switch (Memtables, Response)

  • TP: Write Switch For Memtable Active

    Write Switch For Memtable Active

  • TP: Write Switch For Memtable Completed

    Write Switch For Memtable Completed

  • TP: Write Switch For Response Active

    Write Switch For Response Active

  • TP: Write Switch For Response Completed

    Write Switch For Response Completed

NodeSync metrics Viewing TP stats in Node Details

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