| author | Matthew Wild <mwild1@gmail.com> |
| Sat, 24 Sep 2022 09:26:26 +0100 | |
| changeset 5063 | 5f1120c284c5 |
| parent 3622 | f781a90018f4 |
| permissions | -rw-r--r-- |
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3619
5fe34e5f9829
mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
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1 |
This module compares the memory usage reported by Lua before and after |
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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 |
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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). |
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5fe34e5f9829
mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
4 |
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5fe34e5f9829
mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
5 |
``` lua |
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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 |
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5fe34e5f9829
mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
7 |
``` |
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5fe34e5f9829
mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
8 |
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3622
f781a90018f4
mod_log_events_by_memory: Add link to post explaining different kinds of memory leaks
Kim Alvefur <zash@zash.se>
parents:
3621
diff
changeset
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9 |
If you are looking to identify memory leaks, please first read [Three |
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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:
3621
diff
changeset
|
10 |
kinds of memory |
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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:
3621
diff
changeset
|
11 |
leaks](https://blog.nelhage.com/post/three-kinds-of-leaks/). |
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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:
3621
diff
changeset
|
12 |
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3621
61b9c89db212
mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents:
3619
diff
changeset
|
13 |
Prosody runs on Lua which uses automatic memory management with garbage |
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61b9c89db212
mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents:
3619
diff
changeset
|
14 |
collection, so the numbers reported by this module are very likely to be |
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61b9c89db212
mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents:
3619
diff
changeset
|
15 |
useless for the purpose of identifying memory leaks. Large, but |
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61b9c89db212
mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents:
3619
diff
changeset
|
16 |
temporary, increases in memory usage can however highlight other kinds |
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61b9c89db212
mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents:
3619
diff
changeset
|
17 |
of performance problems and sometimes even provide hits for where to |
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61b9c89db212
mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents:
3619
diff
changeset
|
18 |
look for memory leaks. |