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mod_http_muc_log: Remove dead code This might be something left over since a different variant where the loop went like `for n = i-1, i-100, -1 do ... end` i.e. it went trough a fixed number of items instead of all the page until the current message. Then it would have needed something to stop going over the end, but since the checks are simple it shouldn't be much of a problem looping over even a very busy day.
author Kim Alvefur <zash@zash.se>
date Tue, 16 Aug 2022 01:27:59 +0200
parents d276bf3f0464
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1 ---
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2 labels:
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3 - 'Stage-Stable'
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4 summary: Log warning when event handlers take too long
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5 ...
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6
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7 Introduction
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8 ============
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9
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10 Most activities in Prosody take place within our built-in events framework, for
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11 example stanza processing and HTTP request handling, authentication, etc.
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12
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13 Modules are able to execute code when an event occurs, and they should return
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14 as quickly as possible. Poor performance (e.g. slow or laggy server) can be caused
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15 by event handlers that are slow to respond.
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16
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17 This module is able to monitor how long each event takes to be processed, and
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18 logs a warning if an event takes above a certain amount of time, including
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19 providing any details about the event such as the user or stanza that triggered it.
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20
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21 The aim is to help debug why a server may not be as responsive as it should be,
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22 and ultimately which module is to blame for that.
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23
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24 Configuration
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25 ======================
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26
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27 There is a single configuration option:
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28
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29 ```
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30 -- Set the number of seconds an event may take before
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31 -- logging a warning (fractional values are ok)
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32 log_slow_events_threshold = 0.5
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33 ```
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34
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35 Metrics
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36 =======
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37
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38 In addition to the log messages, a new 'slow_events' metric will be exported to
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39 your configured stats backend (if any).
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40
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41 Compatibility
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42 -------------
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43
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44 ------- --------------
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45 trunk Works
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46 0.10 Works
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47 0.9 Doesn't work
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48 0.8 Doesn't work
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