OS metrics in Enhanced Monitoring

Amazon Aurora provides metrics in real time for the operating system (OS) that your DB cluster runs on. Aurora delivers the metrics from Enhanced Monitoring to your Amazon CloudWatch Logs account. The following tables list the OS metrics available using Amazon CloudWatch Logs.

Topics

OS metrics for Aurora

OS metrics for Aurora

Group	Metric	Console name	Description
`General`	`engine`	Not applicable	The database engine for the DB instance.
	`instanceID`	Not applicable	The DB instance identifier.
	`instanceResourceID`	Not applicable	An immutable identifier for the DB instance that is unique to an AWS Region, also used as the log stream identifier.
	`numVCPUs`	Not applicable	The number of virtual CPUs for the DB instance.
	`timestamp`	Not applicable	The time at which the metrics were taken.
	`uptime`	Not applicable	The amount of time that the DB instance has been active.
	`version`	Not applicable	The version of the OS metrics' stream JSON format.
`cpuUtilization`	`guest`	CPU Guest	The percentage of CPU in use by guest programs.
	`idle`	CPU Idle	The percentage of CPU that is idle.
	`irq`	CPU IRQ	The percentage of CPU in use by software interrupts.
	`nice`	CPU Nice	The percentage of CPU in use by programs running at lowest priority.
	`steal`	CPU Steal	The percentage of CPU in use by other virtual machines.
	`system`	CPU System	The percentage of CPU in use by the kernel.
	`total`	CPU Total	The total percentage of the CPU in use. This value includes the `nice` value.
	`user`	CPU User	The percentage of CPU in use by user programs.
	`wait`	CPU Wait	The percentage of CPU unused while waiting for I/O access.
`diskIO`	`avgQueueLen`	Avg Queue Size	The number of requests waiting in the I/O device's queue.
	`avgReqSz`	Ave Request Size	The average request size, in kilobytes.
	`await`	Disk I/O Await	The number of milliseconds required to respond to requests, including queue time and service time.
	`device`	Not applicable	The identifier of the disk device in use.
	`readIOsPS`	Read IO/s	The number of read operations per second.
	`readKb`	Read Total	The total number of kilobytes read.
	`readKbPS`	Read Kb/s	The number of kilobytes read per second.
	`readLatency`	Read Latency	The elapsed time between the submission of a read I/O request and its completion, in milliseconds. This metric is only available for Amazon Aurora.
	`readThroughput`	Read Throughput	The amount of network throughput used by requests to the DB cluster, in bytes per second. This metric is only available for Amazon Aurora.
	`rrqmPS`	Rrqms	The number of merged read requests queued per second.
	`tps`	TPS	The number of I/O transactions per second.
	`util`	Disk I/O Util	The percentage of CPU time during which requests were issued.
	`writeIOsPS`	Write IO/s	The number of write operations per second.
	`writeKb`	Write Total	The total number of kilobytes written.
	`writeKbPS`	Write Kb/s	The number of kilobytes written per second.
	`writeLatency`	Write Latency	The average elapsed time between the submission of a write I/O request and its completion, in milliseconds. This metric is only available for Amazon Aurora.
	`writeThroughput`	Write Throughput	The amount of network throughput used by responses from the DB cluster, in bytes per second. This metric is only available for Amazon Aurora.
	`wrqmPS`	Wrqms	The number of merged write requests queued per second.
`fileSys`	`maxFiles`	Max Inodes	The maximum number of files that can be created for the file system.
	`mountPoint`	Not applicable	The path to the file system.
	`name`	Not applicable	The name of the file system.
	`total`	Total Filesystem	The total number of disk space available for the file system, in kilobytes.
	`used`	Used Filesystem	The amount of disk space used by files in the file system, in kilobytes.
	`usedFilePercent`	Used Inodes	The percentage of available files in use.
	`usedFiles`	Used%	The number of files in the file system.
	`usedPercent`	Used Filesystem	The percentage of the file-system disk space in use.
`loadAverageMinute`	`fifteen`	Load Avg 15 min	The number of processes requesting CPU time over the last 15 minutes.
	`five`	Load Avg 5 min	The number of processes requesting CPU time over the last 5 minutes.
	`one`	Load Avg 1 min	The number of processes requesting CPU time over the last minute.
`memory`	`active`	Active Memory	The amount of assigned memory, in kilobytes.
	`buffers`	Buffered Memory	The amount of memory used for buffering I/O requests prior to writing to the storage device, in kilobytes.
	`cached`	Cached Memory	The amount of memory used for caching file system–based I/O.
	`dirty`	Dirty Memory	The amount of memory pages in RAM that have been modified but not written to their related data block in storage, in kilobytes.
	`free`	Free Memory	The amount of unassigned memory, in kilobytes.
	`hugePagesFree`	Huge Pages Free	The number of free huge pages. Huge pages are a feature of the Linux kernel.
	`hugePagesRsvd`	Huge Pages Rsvd	The number of committed huge pages.
	`hugePagesSize`	Huge Pages Size	The size for each huge pages unit, in kilobytes.
	`hugePagesSurp`	Huge Pages Surp	The number of available surplus huge pages over the total.
	`hugePagesTotal`	Huge Pages Total	The total number of huge pages.
	`inactive`	Inactive Memory	The amount of least-frequently used memory pages, in kilobytes.
	`mapped`	Mapped Memory	The total amount of file-system contents that is memory mapped inside a process address space, in kilobytes.
	`pageTables`	Page Tables	The amount of memory used by page tables, in kilobytes.
	`slab`	Slab Memory	The amount of reusable kernel data structures, in kilobytes.
	`total`	Total Memory	The total amount of memory, in kilobytes.
	`writeback`	Writeback Memory	The amount of dirty pages in RAM that are still being written to the backing storage, in kilobytes.
`network`	`interface`	Not applicable	The identifier for the network interface being used for the DB instance.
	`rx`	RX	The number of bytes received per second.
	`tx`	TX	The number of bytes uploaded per second.
`processList`	`cpuUsedPc`	CPU %	The percentage of CPU used by the process.
	`id`	Not applicable	The identifier of the process.
	`memoryUsedPc`	MEM%	The percentage of memory used by the process.
	`name`	Not applicable	The name of the process.
	`parentID`	Not applicable	The process identifier for the parent process of the process.
	`rss`	RES	The amount of RAM allocated to the process, in kilobytes.
	`tgid`	Not applicable	The thread group identifier, which is a number representing the process ID to which a thread belongs. This identifier is used to group threads from the same process.
	`vss`	VIRT	The amount of virtual memory allocated to the process, in kilobytes.
`swap`	`swap`	Swap	The amount of swap memory available, in kilobytes.
	`swap in`	Swaps in	The amount of memory, in kilobytes, swapped in from disk.
	`swap out`	Swaps out	The amount of memory, in kilobytes, swapped out to disk.
	`free`	Free Swap	The amount of swap memory free, in kilobytes.
	`committed`	Committed Swap	The amount of swap memory, in kilobytes, used as cache memory.
`tasks`	`blocked`	Tasks Blocked	The number of tasks that are blocked.
	`running`	Tasks Running	The number of tasks that are running.
	`sleeping`	Tasks Sleeping	The number of tasks that are sleeping.
	`stopped`	Tasks Stopped	The number of tasks that are stopped.
	`total`	Tasks Total	The total number of tasks.
	`zombie`	Tasks Zombie	The number of child tasks that are inactive with an active parent task.

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SQL statistics for Aurora PostgreSQL

Monitoring events, logs, and database activity streams