Available Metrics
This topic lists all metrics available in GridGain 9.
client.handler
The metrics provided by the client handler and related to active clients.
| Metric name | Description |
|---|---|
BytesReceived |
The total number of bytes received. |
BytesSent |
The total number of bytes sent. |
ConnectionsInitiated |
The total number of initiated connections. |
CursorsActive |
The number of active cursors. |
RequestsActive |
The number of requests in progress. |
RequestsProcessed |
The total number of processed requests. |
RequestsFailed |
The total number of failed requests. |
SessionsAccepted |
The total number of accepted sessions. |
SessionsActive |
The number of currently active sessions. |
SessionsRejected |
The total number of sessions rejected due to handshake errors. |
SessionsRejectedTls |
The total number of sessions rejected due to TLS handshake errors. |
SessionsRejectedTimeout |
The total number of sessions rejected due to a timeout. |
TransactionsActive |
The number of active transactions. |
clock.service
| Metric name | Description |
|---|---|
ClockSkewExceedingMaxClockSkew |
The observed clock skew that exceeded the maximum clock skew. |
expiration
| Metric name | Description |
|---|---|
DetailedExpirationMetrics |
Detailed expiration metrics. |
TotalDeletedExpiredRowsCount |
The total number of deleted expired rows. |
dcr
| Metric name | Description |
|---|---|
EntriesObserved |
The total number of entries received from the source cluster. |
EntriesSent |
The total number of entries sent to receiver clusters. |
ReplicationLag |
The estimated lag between an entry being sent by the source cluster and received on the target cluster, in milliseconds. |
jvm
The metrics for GridGain Java Virtual Machine resource use.
| Metric name | Description |
|---|---|
UpTime |
The uptime of the Java virtual machine in milliseconds. |
gc.CollectionTime |
The approximate total time spent on garbage collection in milliseconds, summed across all collectors. |
memory.heap.Committed |
The committed amount of heap memory. |
memory.heap.Init |
The initial amount of heap memory. |
memory.heap.Max |
The maximum amount of heap memory. |
memory.heap.Used |
The currently used amount of heap memory. |
memory.non-heap.Committed |
The committed amount of non-heap memory. |
memory.non-heap.Init |
The initial amount of non-heap memory. |
memory.non-heap.Max |
The maximum amount of non-heap memory. |
memory.non-heap.Used |
The used amount of non-heap memory. |
license
| Metric name | Description |
|---|---|
license.DaysToLicenseExpiration |
The number of days left until the license expires. |
license.MaxNumberOfCores |
The maximum number of cores allowed. Represents the sum of cores used for all cluster nodes (0 is unlimited). |
license.MaxNumberOfNodes |
The maximum number of nodes allowed. Represents the total number of nodes in the cluster topology (0 is unlimited). |
license.MaxNumberOfHosts |
The maximum number of hosts allowed. Represents the number of hosts where cluster nodes are located (0 is unlimited). |
license.MaxHeapSize |
The maximum heap size allowed. Represents the sum of configured maximum heap sizes on cluster nodes (0 is unlimited). |
license.MaxOffheapSize |
The maximum off-heap size allowed. Represents the sum of all storage profiles’ sizes on cluster nodes (0 is unlimited). |
license.MaxRamSize |
The maximum RAM size allowed. Represents the sum of available RAM on all hosts (0 is unlimited). |
metastorage
| Metric name | Description |
|---|---|
IdempotentCacheSize |
The current size of the cache of idempotent commands' results. |
SafeTimeLag |
The number of milliseconds the local MetaStorage SafeTime lags behind the local logical clock. |
os
| Metric name | Description |
|---|---|
CpuLoad |
The CPU load. The value is between 0.0 and 1.0, where 0.0 means no CPU load and 1.0 means 100% CPU load. If the CPU load information is not available, a negative value is returned. |
LoadAverage |
The system load average for the last minute. The system load average is the sum of the number of runnable entities queued to the available processors and the number of runnable entities running on the available processors, averaged over a period of time. The way in which the load average is calculated depends on the operating system. If the load average is not available, a negative value is returned. |
placement-driver
| Metric name | Description |
|---|---|
ActiveLeasesCount |
The number of currently active leases. |
CurrentPendingAssignmentsSize |
The current size of pending assignments over all partitions. |
CurrentStableAssignmentsSize |
The current size of stable assignments over all partitions. |
LeasesCreated |
The total number of created leases. |
LeasesProlonged |
The total number of prolonged leases. |
LeasesPublished |
The total number of published leases. |
LeasesWithoutCandidates |
The total number of leases without candidates currently existing. |
raft
| Metric name | Description |
|---|---|
raft.fsmcaller.disruptor.Stripes |
The histogram of distribution data by stripes in the state machine for partitions. |
raft.fsmcaller.disruptor.Batch |
The histogram of the batch size to handle in the state machine for partitions. |
raft.logmanager.disruptor.Batch |
The histogram of the batch size to handle in the log for partitions. |
raft.logmanager.disruptor.Stripes |
The histogram of distribution data by stripes in the log for partitions. |
raft.nodeimpl.disruptor.Batch |
The histogram of the batch size to handle node operations for partitions. |
raft.nodeimpl.disruptor.Stripes |
The histogram of distribution data by stripes for node operations for partitions. |
raft.readonlyservice.disruptor.Stripes |
The histogram of distribution data by stripes for read-only operations for partitions. |
raft.readonlyservice.disruptor.Batch |
The histogram of the batch size to handle read-only operations for partitions. |
resource.vacuum
| Metric name | Description |
|---|---|
MarkedForVacuumTransactionMetaCount |
The count of transaction metas that have been marked for vacuum. |
SkippedForFurtherProcessingUnfinishedTransactionCount |
The current number of unfinished transactions that are skipped by the vacuumizer for further processing. |
VacuumizedPersistentTransactionMetaCount |
The count of persistent transaction metas that have been vacuumized. |
VacuumizedVolatileTxnMetaCount |
The count of volatile transaction metas that have been vacuumized. |
storage.aipersist.{profile}
| Metric name | Description |
|---|---|
CpTotalPages |
The number of pages in the current checkpoint. |
CpEvictedPages |
The number of evicted pages in the current checkpoint. |
CpWrittenPages |
The number of written pages in the current checkpoint. |
CpSyncedPages |
The number of fsynced pages in the current checkpoint. |
CpWriteSpeed |
The checkpoint write speed, in pages per second. The value is averaged over the last 3 checkpoints plus the current one. |
CurrDirtyRatio |
The current ratio of dirty pages (dirty vs total), expressed as a fraction. The fraction is computed for each segment in the current region, and the highest value becomes “current.” |
LastEstimatedSpeedForMarkAll |
The last estimated speed of marking all clean pages dirty to the end of a checkpoint, in pages per second. |
MaxSize |
The maximum in-memory region size in bytes. |
MarkDirtySpeed |
The speed of marking pages dirty, in pages per second. The value is averaged over the last 3 fragments, 0.25 sec each, plus the current fragment, 0–0.25 sec (0.75–1.0 sec total). |
SpeedBasedThrottlingPercentage |
The fraction of throttling time within average marking time (e.g., “quarter” = 0.25). |
TargetDirtyRatio |
The ratio of dirty pages (dirty vs total), expressed as a fraction. Throttling starts when this ratio is reached. |
ThrottleParkTime |
The park (sleep) time for the write operation, in nanoseconds. The value is averaged over the last 3 fragments, 0.25 sec each, plus the current fragment, 0–0.25 sec (0.75–1.0 sec total). It defines park periods for either the checkpoint buffer protection or the clean page pool protection. |
TotalAllocatedSize |
The total size of allocated pages on disk in bytes. |
TotalUsedSize |
The total size of non-empty allocated pages on disk in bytes. |
sql.client
SQL client metrics.
| Metric name | Description |
|---|---|
OpenCursors |
The number of currently open cursors. |
sql.memory
| Metric name | Description |
|---|---|
Limit |
The SQL memory limit (bytes). |
MaxReserved |
The maximum memory usage by SQL so far (bytes). |
Reserved |
The current memory usage by SQL (bytes). |
StatementLimit |
The memory limit per SQL statement (bytes). |
sql.offloading
| Metric name | Description |
|---|---|
DataLimit |
The SQL offloading data limit in bytes. |
DiskUsage |
The amount of space currently used by the offloading in bytes. |
MaxDiskUsage |
The maximum amount of space used by the offloading in bytes. |
OpenedFilesCount |
The number of open files used for offloading. |
OffloadedActiveQueries |
The number of active queries that have been spilled to disk. |
TotalOffloadedQueries |
The total number of queries that have been spilled to disk. |
TotalBytesRead |
The total number of bytes read from disk by the offloading. |
TotalBytesWritten |
The total number of bytes written to disk by the offloading. |
TotalWriteOperationsCount |
The total number of write operations performed by the offloading. |
TotalReadOperationsCount |
The total number of read operations performed by the offloading. |
sql.plan.cache
Metrics for SQL cache planning.
| Metric name | Description |
|---|---|
Hits |
The total number of cache plan hits. |
Misses |
The total number of cache plan misses. |
sql.queries
| Metric name | Description |
|---|---|
Canceled |
The total number of canceled queries. |
ExceededMemoryQuota |
The total number of queries that failed due to exceeding the memory quota. |
Failed |
The total number of failed queries. This metric includes all unsuccessful queries, regardless of reason. |
Succeeded |
The total number of successful queries. |
TimedOut |
The total number of queries that failed due to a time-out. |
tables.{table_name}
Table metrics.
| Metric name | Description |
|---|---|
RwReads |
The total number of reads performed within read-write transactions. |
RoReads |
The total number of reads performed within read-only transactions. |
Writes |
The total number of write operations for this table. |
thread.pools.{thread-pool-executor-name}
| Metric name | Description |
|---|---|
ActiveCount |
The approximate number of threads that are actively executing tasks. |
CompletedTaskCount |
The approximate total number of tasks that have completed execution. |
CorePoolSize |
The core number of threads. |
KeepAliveTime |
The thread keep-alive time, which is the amount of time threads in excess of the core pool size may remain idle before being terminated. |
LargestPoolSize |
The largest number of threads that have ever simultaneously been in the pool. |
MaximumPoolSize |
The maximum allowed number of threads. |
PoolSize |
The current number of threads in the pool. |
TaskCount |
The approximate total number of tasks that have been scheduled for execution. |
QueueSize |
The current size of the execution queue. |
topology.cluster
Metrics for the cluster topology.
| Metric name | Description |
|---|---|
ClusterId |
The unique identifier of the cluster. |
ClusterName |
The unique name of the cluster. |
TotalNodes |
The total number of nodes in the logical topology. |
topology.local
Metrics with node information.
| Metric name | Description |
|---|---|
NodeName |
The unique name of the node. |
NodeId |
The unique identifier of the node. |
NodeVersion |
The GridGain version on the node. |
transactions
Transaction metrics.
| Metric name | Description |
|---|---|
RwCommits |
The total number of read-write transaction commits. |
RoCommits |
The total number of read-only transaction commits. |
RwRollbacks |
The total number of read-write transaction rollbacks. |
RoRollbacks |
The total number of read-only transaction rollbacks. |
RwDuration |
The histogram representation of read-write transaction latency. |
RoDuration |
The histogram representation of read-only transaction latency. |
TotalRollbacks |
The total number of transaction rollbacks. |
TotalCommits |
The total number of transaction commits. |
zones
| Metric name | Description |
|---|---|
LocalUnrebalancedPartitionsCount |
The number of partitions that should be moved to this node. |
TotalUnrebalancedPartitionsCount |
The total number of partitions that should be moved to a new owner. |
© 2025 GridGain Systems, Inc. All Rights Reserved. Privacy Policy | Legal Notices. GridGain® is a registered trademark of GridGain Systems, Inc.
Apache, Apache Ignite, the Apache feather and the Apache Ignite logo are either registered trademarks or trademarks of The Apache Software Foundation.