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annotate mod_throttle_presence/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 79b9bd84b91c
children
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1 ---
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2 labels:
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3 - 'Stage-Beta'
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4 summary: Limit presence stanzas to save traffic
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5 ...
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7 Introduction
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8 ============
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10 For most people 'presence' (status changes) of contacts make up most of
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11 the traffic received by their client. However much of the time it is not
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12 essential to have highly accurate presence information.
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14 This module automatically cuts down on presence traffic when clients
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15 indicate they are inactive (using the [CSI protocol](mod_csi.html)).
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17 This is extremely valuable for mobile clients that wish to save battery
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18 power while in the background.
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20 Configuration
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21 =============
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23 Just load the module (e.g. in modules\_enabled). There are no
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24 configuration options.
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26 Compatibility
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27 =============
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29 ----- -------
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30 0.9 Works
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31 ----- -------