view mod_measure_process/README.markdown @ 4651:8231774f5bfd

mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8 The `body:sub()` call risks splitting the string in the middle of a multi-byte UTF-8 sequence. This should have been caught by util.stanza validation, but that would have caused some havoc, at the very least causing the notification to not be sent. There have been no reports of this happening. Likely because this module isn't widely deployed among users with languages that use many longer UTF-8 sequences. The util.encodings.utf8.valid() function is O(n) where only the last sequence really needs to be checked, but it's in C and expected to be fast.
author Kim Alvefur <zash@zash.se>
date Sun, 22 Aug 2021 13:22:59 +0200
parents 025cf93acfe9
children
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---
labels:
- Statistics
summary: Measure process resource use metrics (cpu, memory, file descriptors)
---

Description
===========

This module exposes process resource use metrics similar to those exposed by
default when using a Prometheus client library. Specifically, the following
metrics are exposed:

- CPU use
- Resident set and virtual memory size
- Number of open file descriptors and their limit

This module uses the new OpenMetrics API and thus requires a recent version
of Prosody trunk (0.12+).

Compatibility
=============

  ------- -------------
  trunk   Works
  0.11    Does not work
  ------- -------------