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mod_log_events_by_memory/README.markdown @ 5931:d194d1012fd3
Updating dox for mod_rest. Ideas expressed / clarified:
1) Making clear that mod_rest isn't to be installed under VirtualHosts AND as a component.
2) Understanding some of the implications of this choice:
A) Changes to user authentication
B) How it affects subdomains
3) More consistent use of domain names for clarity.
4) Using different heading sizes to show scope of section.
Essentially, I added all the tidbits I had to clarify in getting this to work in my
own example.
author | Ben Smith <bens@effortlessis.com> |
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date | Mon, 13 May 2024 13:25:13 -0700 |
parent | 3618:f781a90018f4 |
rev | line source |
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mod_log_events_by_memory: Log events where Lua memory usage increased
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1 This module compares the memory usage reported by Lua before and after |
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2 each event and reports it to the log if it exceeds the configuration |
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3 setting `log_memory_threshold` (in bytes). |
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4 |
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5 ``` lua |
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6 log_memory_threshold = 20*1024 |
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7 ``` |
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8 |
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9 If you are looking to identify memory leaks, please first read [Three |
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10 kinds of memory |
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11 leaks](https://blog.nelhage.com/post/three-kinds-of-leaks/). |
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12 |
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13 Prosody runs on Lua which uses automatic memory management with garbage |
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14 collection, so the numbers reported by this module are very likely to be |
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15 useless for the purpose of identifying memory leaks. Large, but |
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16 temporary, increases in memory usage can however highlight other kinds |
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17 of performance problems and sometimes even provide hits for where to |
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18 look for memory leaks. |