influxdata/telegraf

Thread-level monitoring (similar to top -H)

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#5205 opened on Dec 31, 2018

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area/procstatfeature requesthelp wantedsize/m

Description

Feature Request

Telegraf procstat plugin helps to monitor various processes on the system, but does not take into account the multi-threaded processes (all running with the same main pid , but different thread ids) In Linux, the "top -H" command gives a thread-level metric output.

Proposal:

Add a plugin or extension to procstat/processor plugin to enable thread-level monitoring

Current behavior:

Process-level aggregated output is displayed/stored

Desired behavior:

Thread-level output is desired

Use case: [Why is this important (helps with prioritizing requests)]

Many processes are multi-threaded and run on different cpus (or vcpus) , and the process output would be an aggregate of all .

Contributor guide

Tech stack
go
Domain
observabilityperformance
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Go programming languageLinux /proc filesystemTelegraf plugin architecturethreading concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
To implement thread level monitoring, explore the procstat input plugin located at plugins/inputs/procstat. Understand how it collects process level metrics from /proc filesystem. Extend it to iterate over /proc/[pid]/task/ directories to gather per thread information. Review any existing threads or comments in the issue for additional context.