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annotate mod_measure_process/README.markdown @ 4877:adc6241e5d16

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mod_measure_process: Report the enforced limit The soft limit is what the kernel actually enforces, while the hard limit is is how far you can change the soft limit without privileges. Unless the process dynamically adjusts the soft limit, knowing the hard limit is not as useful as knowing the soft limit. Reporting the soft limit and the number of in-use FDs allows placing alerts on expressions like 'process_open_fds / process_max_fds >= 0.95'
author Kim Alvefur <zash@zash.se>
date Tue, 18 Jan 2022 18:55:20 +0100
parents 025cf93acfe9
children
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2 labels:
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3 - Statistics
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4 summary: Measure process resource use metrics (cpu, memory, file descriptors)
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7 Description
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8 ===========
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9
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10 This module exposes process resource use metrics similar to those exposed by
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11 default when using a Prometheus client library. Specifically, the following
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12 metrics are exposed:
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14 - CPU use
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15 - Resident set and virtual memory size
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16 - Number of open file descriptors and their limit
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18 This module uses the new OpenMetrics API and thus requires a recent version
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19 of Prosody trunk (0.12+).
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20
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21 Compatibility
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22 =============
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24 ------- -------------
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25 trunk Works
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26 0.11 Does not work
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27 ------- -------------