PHP_FPM fields

PHP-FPM server status metrics collected from PHP-FPM.

php_fpm contains the metrics that were obtained from PHP-FPM status page call.

pool contains the metrics that were obtained from the PHP-FPM process pool.

php_fpm.pool.name

The name of the pool.

type: keyword

pool contains the metrics that were obtained from the PHP-FPM process pool.

php_fpm.pool.process_manager

Static, dynamic or ondemand.

type: keyword

Connection state specific statistics.

php_fpm.pool.connections.accepted

The number of incoming requests that the PHP-FPM server has accepted; when a connection is accepted it is removed from the listen queue.

type: long

php_fpm.pool.connections.queued

The current number of connections that have been initiated, but not yet accepted. If this value is non-zero it typically means that all the available server processes are currently busy, and there are no processes available to serve the next request. Raising pm.max_children (provided the server can handle it) should help keep this number low. This property follows from the fact that PHP-FPM listens via a socket (TCP or file based), and thus inherits some of the characteristics of sockets.

type: long

php_fpm.pool.connections.max_listen_queue

The maximum number of requests in the queue of pending connections since FPM has started.

type: long

php_fpm.pool.connections.listen_queue_len

The size of the socket queue of pending connections.

type: long

Process state specific statistics.

php_fpm.pool.processes.idle

The number of servers in the waiting to process state (i.e. not currently serving a page). This value should fall between the pm.min_spare_servers and pm.max_spare_servers values when the process manager is dynamic.

type: long

php_fpm.pool.processes.active

The number of servers current processing a page - the minimum is 1 (so even on a fully idle server, the result will be not read 0).

type: long

php_fpm.pool.processes.total

The number of idle + active processes.

type: long

php_fpm.pool.processes.max_active

The maximum number of active processes since FPM has started.

type: long

php_fpm.pool.processes.max_children_reached

Number of times, the process limit has been reached, when pm tries to start more children (works only for pm dynamic and ondemand).

type: long

php_fpm.pool.slow_requests

The number of times a request execution time has exceeded request_slowlog_timeout.

type: long

php_fpm.pool.start_since

Number of seconds since FPM has started.

type: long

php_fpm.pool.start_time

The date and time FPM has started.

type: date

process contains the metrics that were obtained from the PHP-FPM process.

php_fpm.process.pid

The PID of the process

type: alias

alias to: process.pid

php_fpm.process.state

The state of the process (Idle, Running, etc)

type: keyword

php_fpm.process.start_time

The date and time the process has started

type: date

php_fpm.process.start_since

The number of seconds since the process has started

type: integer

php_fpm.process.requests

The number of requests the process has served

type: integer

php_fpm.process.request_duration

The duration in microseconds (1 million in a second) of the current request (my own definition)

type: integer

php_fpm.process.request_method

The request method (GET, POST, etc) (of the current request)

type: alias

alias to: http.request.method

php_fpm.process.request_uri

The request URI with the query string (of the current request)

type: alias

alias to: url.original

php_fpm.process.content_length

The content length of the request (only with POST) (of the current request)

type: alias

alias to: http.response.body.bytes

php_fpm.process.user

The user (PHP_AUTH_USER) (or - if not set) (for the current request)

type: alias

alias to: user.name

php_fpm.process.script

The main script called (or - if not set) (for the current request)

type: keyword

php_fpm.process.last_request_cpu

The CPU percentage the last request consumed. It’s always 0 if the process is not in Idle state because CPU calculation is done when the request processing has terminated

type: long

php_fpm.process.last_request_memory

The max amount of memory the last request consumed. It’s always 0 if the process is not in Idle state because memory calculation is done when the request processing has terminated

type: integer