Inter Process Communication
Inter Process Communication
Plugin: proc.plugin Module: ipc
Overview
IPC stands for Inter-Process Communication. It is a mechanism which allows processes to communicate with each other and synchronize their actions.
This collector exposes information about:
-
Message Queues: This allows messages to be exchanged between processes. It’s a more flexible method that allows messages to be placed onto a queue and read at a later time.
-
Shared Memory: This method allows for the fastest form of IPC because processes can exchange data by reading/writing into shared memory segments.
-
Semaphores: They are used to synchronize the operations performed by independent processes. So, if multiple processes are trying to access a single shared resource, semaphores can ensure that only one process accesses the resource at a given time.
This collector is supported on all platforms.
This collector only supports collecting metrics from a single instance of this integration.
Default Behavior
Auto-Detection
This integration doesn’t support auto-detection.
Limits
The default configuration for this integration does not impose any limits on data collection.
Performance Impact
The default configuration for this integration is not expected to impose a significant performance impact on the system.
Setup
Prerequisites
No action required.
Configuration
File
There is no configuration file.
Options
There are no configuration options.
Examples
There are no configuration examples.
Metrics
Metrics grouped by scope.
The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.
Per Inter Process Communication instance
This scope has no labels.
Metrics:
| Metric | Dimensions | Unit |
|---|---|---|
| system.ipc_semaphores | semaphores | semaphores |
| system.ipc_semaphore_arrays | arrays | arrays |
| system.message_queue_message | a dimension per queue | messages |
| system.message_queue_bytes | a dimension per queue | bytes |
| system.shared_memory_segments | segments | segments |
| system.shared_memory_bytes | bytes | bytes |
Alerts
The following alerts are available:
| Alert name | On metric | Description |
|---|---|---|
| semaphores_used | system.ipc_semaphores | IPC semaphore utilization |
| semaphore_arrays_used | system.ipc_semaphore_arrays | IPC semaphore arrays utilization |