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Update TUNING.md to include the new tcache_max option.

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Qi Wang 2022-05-03 14:28:30 -07:00 committed by Qi Wang
parent 254b011915
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TUNING.md
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@ -1,5 +1,5 @@
This document summarizes the common approaches for performance fine tuning with
jemalloc (as of 5.1.0). The default configuration of jemalloc tends to work
jemalloc (as of 5.3.0). The default configuration of jemalloc tends to work
reasonably well in practice, and most applications should not have to tune any
options. However, in order to cover a wide range of applications and avoid
pathological cases, the default setting is sometimes kept conservative and
@ -76,14 +76,14 @@ Examples:
* High resource consumption application, prioritizing memory usage:
`background_thread:true` combined with shorter decay time (decreased
`dirty_decay_ms` and / or `muzzy_decay_ms`,
`background_thread:true,tcache_max:4096` combined with shorter decay time
(decreased `dirty_decay_ms` and / or `muzzy_decay_ms`,
e.g. `dirty_decay_ms:5000,muzzy_decay_ms:5000`), and lower arena count
(e.g. number of CPUs).
* Low resource consumption application:
`narenas:1,lg_tcache_max:13` combined with shorter decay time (decreased
`narenas:1,tcache_max:1024` combined with shorter decay time (decreased
`dirty_decay_ms` and / or `muzzy_decay_ms`,e.g.
`dirty_decay_ms:1000,muzzy_decay_ms:0`).