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This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.

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System fields

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System fields

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System status metrics, like CPU and memory usage, that are collected from the operating system.

system fields

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system contains local system metrics.

core fields

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system-core contains CPU metrics for a single core of a multi-core system.

`system.core.id`

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type: long

CPU Core number.

`system.core.user.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in user space.

`system.core.user.ticks`

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type: long

The amount of CPU time spent in user space.

`system.core.system.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in kernel space.

`system.core.system.ticks`

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type: long

The amount of CPU time spent in kernel space.

`system.core.nice.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent on low-priority processes.

`system.core.nice.ticks`

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type: long

The amount of CPU time spent on low-priority processes.

`system.core.idle.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent idle.

`system.core.idle.ticks`

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type: long

The amount of CPU time spent idle.

`system.core.iowait.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in wait (on disk).

`system.core.iowait.ticks`

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type: long

The amount of CPU time spent in wait (on disk).

`system.core.irq.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent servicing and handling hardware interrupts.

`system.core.irq.ticks`

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type: long

The amount of CPU time spent servicing and handling hardware interrupts.

`system.core.softirq.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent servicing and handling software interrupts.

`system.core.softirq.ticks`

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type: long

The amount of CPU time spent servicing and handling software interrupts.

`system.core.steal.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in involuntary wait by the virtual CPU while the hypervisor was servicing another processor. Available only on Unix.

`system.core.steal.ticks`

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type: long

The amount of CPU time spent in involuntary wait by the virtual CPU while the hypervisor was servicing another processor. Available only on Unix.

cpu fields

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cpu contains local CPU stats.

`system.cpu.cores`

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type: long

The number of CPU cores present on the host. The non-normalized percentages will have a maximum value of 100% * cores. The normalized percentages already take this value into account and have a maximum value of 100%.

`system.cpu.user.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in user space. On multi-core systems, you can have percentages that are greater than 100%. For example, if 3 cores are at 60% use, then the system.cpu.user.pct will be 180%.

`system.cpu.system.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in kernel space.

`system.cpu.nice.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent on low-priority processes.

`system.cpu.idle.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent idle.

`system.cpu.iowait.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in wait (on disk).

`system.cpu.irq.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent servicing and handling hardware interrupts.

`system.cpu.softirq.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent servicing and handling software interrupts.

`system.cpu.steal.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in involuntary wait by the virtual CPU while the hypervisor was servicing another processor. Available only on Unix.

`system.cpu.total.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in non-idle state.

`system.cpu.user.norm.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in user space.

`system.cpu.system.norm.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in kernel space.

`system.cpu.nice.norm.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent on low-priority processes.

`system.cpu.idle.norm.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent idle.

`system.cpu.iowait.norm.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in wait (on disk).

`system.cpu.irq.norm.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent servicing and handling hardware interrupts.

`system.cpu.softirq.norm.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent servicing and handling software interrupts.

`system.cpu.steal.norm.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in involuntary wait by the virtual CPU while the hypervisor was servicing another processor. Available only on Unix.

`system.cpu.total.norm.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent in non-idle state.

`system.cpu.user.ticks`

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type: long

The amount of CPU time spent in user space.

`system.cpu.system.ticks`

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type: long

The amount of CPU time spent in kernel space.

`system.cpu.nice.ticks`

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type: long

The amount of CPU time spent on low-priority processes.

`system.cpu.idle.ticks`

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type: long

The amount of CPU time spent idle.

`system.cpu.iowait.ticks`

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type: long

The amount of CPU time spent in wait (on disk).

`system.cpu.irq.ticks`

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type: long

The amount of CPU time spent servicing and handling hardware interrupts.

`system.cpu.softirq.ticks`

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type: long

The amount of CPU time spent servicing and handling software interrupts.

`system.cpu.steal.ticks`

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type: long

The amount of CPU time spent in involuntary wait by the virtual CPU while the hypervisor was servicing another processor. Available only on Unix.

diskio fields

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disk contains disk IO metrics collected from the operating system.

`system.diskio.name`

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type: keyword

example: sda1

The disk name.

`system.diskio.serial_number`

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type: keyword

The disk’s serial number. This may not be provided by all operating systems.

`system.diskio.read.count`

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type: long

The total number of reads completed successfully.

`system.diskio.write.count`

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type: long

The total number of writes completed successfully.

`system.diskio.read.bytes`

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type: long

format: bytes

The total number of bytes read successfully. On Linux this is the number of sectors read multiplied by an assumed sector size of 512.

`system.diskio.write.bytes`

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type: long

format: bytes

The total number of bytes written successfully. On Linux this is the number of sectors written multiplied by an assumed sector size of 512.

`system.diskio.read.time`

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type: long

The total number of milliseconds spent by all reads.

`system.diskio.write.time`

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type: long

The total number of milliseconds spent by all writes.

`system.diskio.io.time`

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type: long

The total number of of milliseconds spent doing I/Os.

`system.diskio.iostat.read.request.merges_per_sec`

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type: float

The number of read requests merged per second that were queued to the device.

`system.diskio.iostat.write.request.merges_per_sec`

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type: float

The number of write requests merged per second that were queued to the device.

`system.diskio.iostat.read.request.per_sec`

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type: float

The number of read requests that were issued to the device per second

`system.diskio.iostat.write.request.per_sec`

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type: float

The number of write requests that were issued to the device per second

`system.diskio.iostat.read.per_sec.bytes`

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type: float

format: bytes

The number of Bytes read from the device per second.

`system.diskio.iostat.write.per_sec.bytes`

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type: float

format: bytes

The number of Bytes write from the device per second.

`system.diskio.iostat.request.avg_size`

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type: float

The average size (in sectors) of the requests that were issued to the device.

`system.diskio.iostat.queue.avg_size`

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type: float

The average queue length of the requests that were issued to the device.

`system.diskio.iostat.await`

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type: float

The average time spent for requests issued to the device to be served.

`system.diskio.iostat.service_time`

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type: float

The average service time (in milliseconds) for I/O requests that were issued to the device.

`system.diskio.iostat.busy`

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type: float

Percentage of CPU time during which I/O requests were issued to the device (bandwidth utilization for the device). Device saturation occurs when this value is close to 100%.

filesystem fields

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filesystem contains local filesystem stats.

`system.filesystem.available`

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type: long

format: bytes

The disk space available to an unprivileged user in bytes.

`system.filesystem.device_name`

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type: keyword

The disk name. For example: /dev/disk1

`system.filesystem.type`

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type: keyword

The disk type. For example: ext4

`system.filesystem.mount_point`

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type: keyword

The mounting point. For example: /

`system.filesystem.files`

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type: long

The total number of file nodes in the file system.

`system.filesystem.free`

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type: long

format: bytes

The disk space available in bytes.

`system.filesystem.free_files`

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type: long

The number of free file nodes in the file system.

`system.filesystem.total`

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type: long

format: bytes

The total disk space in bytes.

`system.filesystem.used.bytes`

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type: long

format: bytes

The used disk space in bytes.

`system.filesystem.used.pct`

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type: scaled_float

format: percent

The percentage of used disk space.

fsstat fields

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system.fsstat contains filesystem metrics aggregated from all mounted filesystems, similar with what df -a prints out.

`system.fsstat.count`

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type: long

Number of file systems found.

`system.fsstat.total_files`

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type: long

Total number of files.

total_size fields

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Nested file system docs.

`system.fsstat.total_size.free`

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type: long

format: bytes

Total free space.

`system.fsstat.total_size.used`

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type: long

format: bytes

Total used space.

`system.fsstat.total_size.total`

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type: long

format: bytes

Total space (used plus free).

load fields

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CPU load averages.

`system.load.1`

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type: scaled_float

Load average for the last minute.

`system.load.5`

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type: scaled_float

Load average for the last 5 minutes.

`system.load.15`

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type: scaled_float

Load average for the last 15 minutes.

`system.load.norm.1`

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type: scaled_float

Load for the last minute divided by the number of cores.

`system.load.norm.5`

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type: scaled_float

Load for the last 5 minutes divided by the number of cores.

`system.load.norm.15`

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type: scaled_float

Load for the last 15 minutes divided by the number of cores.

`system.load.cores`

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type: long

The number of CPU cores present on the host.

memory fields

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memory contains local memory stats.

`system.memory.total`

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type: long

format: bytes

Total memory.

`system.memory.used.bytes`

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type: long

format: bytes

Used memory.

`system.memory.free`

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type: long

format: bytes

The total amount of free memory in bytes. This value does not include memory consumed by system caches and buffers (see system.memory.actual.free).

`system.memory.used.pct`

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type: scaled_float

format: percent

The percentage of used memory.

actual fields

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Actual memory used and free.

`system.memory.actual.used.bytes`

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type: long

format: bytes

Actual used memory in bytes. It represents the difference between the total and the available memory. The available memory depends on the OS. For more details, please check system.actual.free.

`system.memory.actual.free`

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type: long

format: bytes

Actual free memory in bytes. It is calculated based on the OS. On Linux it consists of the free memory plus caches and buffers. On OSX it is a sum of free memory and the inactive memory. On Windows, it is equal to system.memory.free.

`system.memory.actual.used.pct`

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type: scaled_float

format: percent

The percentage of actual used memory.

swap fields

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This group contains statistics related to the swap memory usage on the system.

`system.memory.swap.total`

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type: long

format: bytes

Total swap memory.

`system.memory.swap.used.bytes`

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type: long

format: bytes

Used swap memory.

`system.memory.swap.free`

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type: long

format: bytes

Available swap memory.

`system.memory.swap.used.pct`

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type: scaled_float

format: percent

The percentage of used swap memory.

network fields

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network contains network IO metrics for a single network interface.

`system.network.name`

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type: keyword

example: eth0

The network interface name.

`system.network.out.bytes`

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type: long

format: bytes

The number of bytes sent.

`system.network.in.bytes`

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type: long

format: bytes

The number of bytes received.

`system.network.out.packets`

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type: long

The number of packets sent.

`system.network.in.packets`

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type: long

The number or packets received.

`system.network.in.errors`

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type: long

The number of errors while receiving.

`system.network.out.errors`

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type: long

The number of errors while sending.

`system.network.in.dropped`

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type: long

The number of incoming packets that were dropped.

`system.network.out.dropped`

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type: long

The number of outgoing packets that were dropped. This value is always 0 on Darwin and BSD because it is not reported by the operating system.

process fields

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process contains process metadata, CPU metrics, and memory metrics.

`system.process.name`

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type: keyword

The process name.

`system.process.state`

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type: keyword

The process state. For example: "running".

`system.process.pid`

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type: long

The process pid.

`system.process.ppid`

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type: long

The process parent pid.

`system.process.pgid`

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type: long

The process group id.

`system.process.cmdline`

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type: keyword

The full command-line used to start the process, including the arguments separated by space.

`system.process.username`

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type: keyword

The username of the user that created the process. If the username cannot be determined, the field will contain the user’s numeric identifier (UID). On Windows, this field includes the user’s domain and is formatted as domain\username.

`system.process.cwd`

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type: keyword

The current working directory of the process. This field is only available on Linux.

`system.process.env`

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type: object

The environment variables used to start the process. The data is available on FreeBSD, Linux, and OS X.

cpu fields

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CPU-specific statistics per process.

`system.process.cpu.user`

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type: long

The amount of CPU time the process spent in user space.

`system.process.cpu.total.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent by the process since the last update. Its value is similar to the %CPU value of the process displayed by the top command on Unix systems.

`system.process.cpu.total.norm.pct`

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type: scaled_float

format: percent

The percentage of CPU time spent by the process since the last event. This value is normalized by the number of CPU cores and it ranges from 0 to 100%.

`system.process.cpu.system`

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type: long

The amount of CPU time the process spent in kernel space.

`system.process.cpu.total.ticks`

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type: long

The total CPU time spent by the process.

`system.process.cpu.start_time`

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type: date

The time when the process was started.

memory fields

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Memory-specific statistics per process.

`system.process.memory.size`

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type: long

format: bytes

The total virtual memory the process has.

`system.process.memory.rss.bytes`

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type: long

format: bytes

The Resident Set Size. The amount of memory the process occupied in main memory (RAM).

`system.process.memory.rss.pct`

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type: scaled_float

format: percent

The percentage of memory the process occupied in main memory (RAM).

`system.process.memory.share`

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type: long

format: bytes

The shared memory the process uses.

fd fields

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File descriptor usage metrics. This set of metrics is available for Linux and FreeBSD.

`system.process.fd.open`

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type: long

The number of file descriptors open by the process.

`system.process.fd.limit.soft`

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type: long

The soft limit on the number of file descriptors opened by the process. The soft limit can be changed by the process at any time.

`system.process.fd.limit.hard`

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type: long

The hard limit on the number of file descriptors opened by the process. The hard limit can only be raised by root.

cgroup fields

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Metrics and limits from the cgroup of which the task is a member. cgroup metrics are reported when the process has membership in a non-root cgroup. These metrics are only available on Linux.

`system.process.cgroup.id`

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type: keyword

The ID common to all cgroups associated with this task. If there isn’t a common ID used by all cgroups this field will be absent.

`system.process.cgroup.path`

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type: keyword

The path to the cgroup relative to the cgroup subsystem’s mountpoint. If there isn’t a common path used by all cgroups this field will be absent.

cpu fields

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The cpu subsystem schedules CPU access for tasks in the cgroup. Access can be controlled by two separate schedulers, CFS and RT. CFS stands for completely fair scheduler which proportionally divides the CPU time between cgroups based on weight. RT stands for real time scheduler which sets a maximum amount of CPU time that processes in the cgroup can consume during a given period.

`system.process.cgroup.cpu.id`

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type: keyword

ID of the cgroup.

`system.process.cgroup.cpu.path`

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type: keyword

Path to the cgroup relative to the cgroup subsystem’s mountpoint.

`system.process.cgroup.cpu.cfs.period.us`

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type: long

Period of time in microseconds for how regularly a cgroup’s access to CPU resources should be reallocated.

`system.process.cgroup.cpu.cfs.quota.us`

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type: long

Total amount of time in microseconds for which all tasks in a cgroup can run during one period (as defined by cfs.period.us).

`system.process.cgroup.cpu.cfs.shares`

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type: long

An integer value that specifies a relative share of CPU time available to the tasks in a cgroup. The value specified in the cpu.shares file must be 2 or higher.

`system.process.cgroup.cpu.rt.period.us`

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type: long

Period of time in microseconds for how regularly a cgroup’s access to CPU resources is reallocated.

`system.process.cgroup.cpu.rt.runtime.us`

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type: long

Period of time in microseconds for the longest continuous period in which the tasks in a cgroup have access to CPU resources.

`system.process.cgroup.cpu.stats.periods`

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type: long

Number of period intervals (as specified in cpu.cfs.period.us) that have elapsed.

`system.process.cgroup.cpu.stats.throttled.periods`

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type: long

Number of times tasks in a cgroup have been throttled (that is, not allowed to run because they have exhausted all of the available time as specified by their quota).

`system.process.cgroup.cpu.stats.throttled.ns`

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type: long

The total time duration (in nanoseconds) for which tasks in a cgroup have been throttled.

cpuacct fields

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CPU accounting metrics.

`system.process.cgroup.cpuacct.id`

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type: keyword

ID of the cgroup.

`system.process.cgroup.cpuacct.path`

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type: keyword

Path to the cgroup relative to the cgroup subsystem’s mountpoint.

`system.process.cgroup.cpuacct.total.ns`

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type: long

Total CPU time in nanoseconds consumed by all tasks in the cgroup.

`system.process.cgroup.cpuacct.stats.user.ns`

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type: long

CPU time consumed by tasks in user mode.

`system.process.cgroup.cpuacct.stats.system.ns`

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type: long

CPU time consumed by tasks in user (kernel) mode.

`system.process.cgroup.cpuacct.percpu`

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type: object

CPU time (in nanoseconds) consumed on each CPU by all tasks in this cgroup.

memory fields

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Memory limits and metrics.

`system.process.cgroup.memory.id`

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type: keyword

ID of the cgroup.

`system.process.cgroup.memory.path`

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type: keyword

Path to the cgroup relative to the cgroup subsystem’s mountpoint.

`system.process.cgroup.memory.mem.usage.bytes`

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type: long

format: bytes

Total memory usage by processes in the cgroup (in bytes).

`system.process.cgroup.memory.mem.usage.max.bytes`

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type: long

format: bytes

The maximum memory used by processes in the cgroup (in bytes).

`system.process.cgroup.memory.mem.limit.bytes`

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type: long

format: bytes

The maximum amount of user memory in bytes (including file cache) that tasks in the cgroup are allowed to use.

`system.process.cgroup.memory.mem.failures`

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type: long

The number of times that the memory limit (mem.limit.bytes) was reached.

`system.process.cgroup.memory.memsw.usage.bytes`

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type: long

format: bytes

The sum of current memory usage plus swap space used by processes in the cgroup (in bytes).

`system.process.cgroup.memory.memsw.usage.max.bytes`

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type: long

format: bytes

The maximum amount of memory and swap space used by processes in the cgroup (in bytes).

`system.process.cgroup.memory.memsw.limit.bytes`

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type: long

format: bytes

The maximum amount for the sum of memory and swap usage that tasks in the cgroup are allowed to use.

`system.process.cgroup.memory.memsw.failures`

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type: long

The number of times that the memory plus swap space limit (memsw.limit.bytes) was reached.

`system.process.cgroup.memory.kmem.usage.bytes`

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type: long

format: bytes

Total kernel memory usage by processes in the cgroup (in bytes).

`system.process.cgroup.memory.kmem.usage.max.bytes`

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type: long

format: bytes

The maximum kernel memory used by processes in the cgroup (in bytes).

`system.process.cgroup.memory.kmem.limit.bytes`

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type: long

format: bytes

The maximum amount of kernel memory that tasks in the cgroup are allowed to use.

`system.process.cgroup.memory.kmem.failures`

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type: long

The number of times that the memory limit (kmem.limit.bytes) was reached.

`system.process.cgroup.memory.kmem_tcp.usage.bytes`

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type: long

format: bytes

Total memory usage for TCP buffers in bytes.

`system.process.cgroup.memory.kmem_tcp.usage.max.bytes`

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type: long

format: bytes

The maximum memory used for TCP buffers by processes in the cgroup (in bytes).

`system.process.cgroup.memory.kmem_tcp.limit.bytes`

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type: long

format: bytes

The maximum amount of memory for TCP buffers that tasks in the cgroup are allowed to use.

`system.process.cgroup.memory.kmem_tcp.failures`

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type: long

The number of times that the memory limit (kmem_tcp.limit.bytes) was reached.

`system.process.cgroup.memory.stats.active_anon.bytes`

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type: long

format: bytes

Anonymous and swap cache on active least-recently-used (LRU) list, including tmpfs (shmem), in bytes.

`system.process.cgroup.memory.stats.active_file.bytes`

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type: long

format: bytes

File-backed memory on active LRU list, in bytes.

`system.process.cgroup.memory.stats.cache.bytes`

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type: long

format: bytes

Page cache, including tmpfs (shmem), in bytes.

`system.process.cgroup.memory.stats.hierarchical_memory_limit.bytes`

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type: long

format: bytes

Memory limit for the hierarchy that contains the memory cgroup, in bytes.

`system.process.cgroup.memory.stats.hierarchical_memsw_limit.bytes`

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type: long

format: bytes

Memory plus swap limit for the hierarchy that contains the memory cgroup, in bytes.

`system.process.cgroup.memory.stats.inactive_anon.bytes`

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type: long

format: bytes

Anonymous and swap cache on inactive LRU list, including tmpfs (shmem), in bytes

`system.process.cgroup.memory.stats.inactive_file.bytes`

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type: long

format: bytes

File-backed memory on inactive LRU list, in bytes.

`system.process.cgroup.memory.stats.mapped_file.bytes`

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type: long

format: bytes

Size of memory-mapped mapped files, including tmpfs (shmem), in bytes.

`system.process.cgroup.memory.stats.page_faults`

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type: long

Number of times that a process in the cgroup triggered a page fault.

`system.process.cgroup.memory.stats.major_page_faults`

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type: long

Number of times that a process in the cgroup triggered a major fault. "Major" faults happen when the kernel actually has to read the data from disk.

`system.process.cgroup.memory.stats.pages_in`

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type: long

Number of pages paged into memory. This is a counter.

`system.process.cgroup.memory.stats.pages_out`

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type: long

Number of pages paged out of memory. This is a counter.

`system.process.cgroup.memory.stats.rss.bytes`

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type: long

format: bytes

Anonymous and swap cache (includes transparent hugepages), not including tmpfs (shmem), in bytes.

`system.process.cgroup.memory.stats.rss_huge.bytes`

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type: long

format: bytes

Number of bytes of anonymous transparent hugepages.

`system.process.cgroup.memory.stats.swap.bytes`

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type: long

format: bytes

Swap usage, in bytes.

`system.process.cgroup.memory.stats.unevictable.bytes`

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type: long

format: bytes

Memory that cannot be reclaimed, in bytes.

blkio fields

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Block IO metrics.

`system.process.cgroup.blkio.id`

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type: keyword

ID of the cgroup.

`system.process.cgroup.blkio.path`

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type: keyword

Path to the cgroup relative to the cgroup subsystems mountpoint.

`system.process.cgroup.blkio.total.bytes`

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type: long

format: bytes

Total number of bytes transferred to and from all block devices by processes in the cgroup.

`system.process.cgroup.blkio.total.ios`

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type: long

Total number of I/O operations performed on all devices by processes in the cgroup as seen by the throttling policy.

process.summary fields

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Summary metrics for the processes running on the host.

`system.process.summary.total`

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type: long

Total number of processes on this host.

`system.process.summary.running`

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type: long

Number of running processes on this host.

`system.process.summary.idle`

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type: long

Number of idle processes on this host.

`system.process.summary.sleeping`

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type: long

Number of sleeping processes on this host.

`system.process.summary.stopped`

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type: long

Number of stopped processes on this host.

`system.process.summary.zombie`

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type: long

Number of zombie processes on this host.

`system.process.summary.unknown`

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type: long

Number of processes for which the state couldn’t be retrieved or is unknown.

socket fields

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TCP sockets that are active.

`system.socket.direction`

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type: keyword

example: incoming

How the socket was initiated. Possible values are incoming, outgoing, or listening.

`system.socket.family`

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type: keyword

example: ipv4

Address family.

`system.socket.local.ip`

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type: ip

example: 192.0.2.1 or 2001:0DB8:ABED:8536::1

Local IP address. This can be an IPv4 or IPv6 address.

`system.socket.local.port`

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type: long

example: 22

Local port.

`system.socket.remote.ip`

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type: ip

example: 192.0.2.1 or 2001:0DB8:ABED:8536::1

Remote IP address. This can be an IPv4 or IPv6 address.

`system.socket.remote.port`

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type: long

example: 22

Remote port.

`system.socket.remote.host`

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type: keyword

example: 76-211-117-36.nw.example.com.

PTR record associated with the remote IP. It is obtained via reverse IP lookup.

`system.socket.remote.etld_plus_one`

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type: keyword

example: example.com.

The effective top-level domain (eTLD) of the remote host plus one more label. For example, the eTLD+1 for "foo.bar.golang.org." is "golang.org.". The data for determining the eTLD comes from an embedded copy of the data from http://publicsuffix.org.