Mercurial > prosody-modules

annotate mod_log_events_by_memory/README.markdown @ 5925:32d1abb89dfe

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_rest: Reject password that fails saslprep earlier (thanks tgy) Prevents an error later if/when passing the password through saslprep a second time in the authentication module, since the prep functions now reject nil The error reporting could be improved but that would involve adding a way to pass errors back out of the check_credentials() function.
author Kim Alvefur <zash@zash.se>
date Thu, 04 Jul 2024 16:06:32 +0200
parents f781a90018f4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3615
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
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:
diff changeset
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:
diff changeset
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:
diff changeset
4
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
5 ``` lua
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 log_memory_threshold = 20*1024
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7 ```
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8
3618
f781a90018f4 mod_log_events_by_memory: Add link to post explaining different kinds of memory leaks
Kim Alvefur <zash@zash.se>
parents: 3617
diff changeset
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
diff changeset
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
diff changeset
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
diff changeset
12
3617
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
diff changeset
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
diff changeset
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
diff changeset
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
diff changeset
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
diff changeset
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
diff changeset
18 look for memory leaks.