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annotate mod_log_events_by_memory/README.markdown @ 5170:4d6af8950016

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mod_muc_moderation: Derive role from reserved nickname if occupant When using a different client to moderate than the one used to participate in the chat, e.g. a command line tool like clix, there's no occupant and no role to use in the permission check. Previously the default role based on affiliation was used. Now if you are present in the room using your reserved nick, the role you have there is used in the permission check instead of the default affiliation-derived role.
author Kim Alvefur <zash@zash.se>
date Sun, 19 Feb 2023 18:17:37 +0100
parents f781a90018f4
children
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5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
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1 This module compares the memory usage reported by Lua before and after
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
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2 each event and reports it to the log if it exceeds the configuration
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
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3 setting `log_memory_threshold` (in bytes).
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
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4
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
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5 ``` lua
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
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6 log_memory_threshold = 20*1024
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
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7 ```
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8
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f781a90018f4 mod_log_events_by_memory: Add link to post explaining different kinds of memory leaks
Kim Alvefur <zash@zash.se>
parents: 3617
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9 If you are looking to identify memory leaks, please first read [Three
f781a90018f4 mod_log_events_by_memory: Add link to post explaining different kinds of memory leaks
Kim Alvefur <zash@zash.se>
parents: 3617
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10 kinds of memory
f781a90018f4 mod_log_events_by_memory: Add link to post explaining different kinds of memory leaks
Kim Alvefur <zash@zash.se>
parents: 3617
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11 leaks](https://blog.nelhage.com/post/three-kinds-of-leaks/).
f781a90018f4 mod_log_events_by_memory: Add link to post explaining different kinds of memory leaks
Kim Alvefur <zash@zash.se>
parents: 3617
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12
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Kim Alvefur <zash@zash.se>
parents: 3615
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13 Prosody runs on Lua which uses automatic memory management with garbage
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
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14 collection, so the numbers reported by this module are very likely to be
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
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15 useless for the purpose of identifying memory leaks. Large, but
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
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16 temporary, increases in memory usage can however highlight other kinds
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
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17 of performance problems and sometimes even provide hits for where to
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
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18 look for memory leaks.