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Update built-in DNS cache section on Performance Tuning page

chros73
2017-08-19 21:32:46 +01:00
parent 20a3fcce8d
commit 4595ba3776
1 changed files with 20 additions and 19 deletions
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Performance-Tuning.md
+20 -19
@@ -2,25 +2,25 @@
**Contents**
* [rTorrent related settings](#rtorrent-related-settings)
* [Sample config entries](#sample-config-entries)
* [Peers and slots](#peers-and-slots)
* [Definitions](#definitions)
* [Assigning the right values](#assigning-the-right-values)
* [Memory impact](#memory-impact)
* [Max memory usage setting](#max-memory-usage-setting)
* [Reduce disk usage](#reduce-disk-usage)
* [Send and receive buffer size](#send-and-receive-buffer-size)
* [Preloading pieces](#preloading-pieces)
* [Max open files](#max-open-files)
* [Disk allocation](#disk-allocation)
* [Session save](#session-save)
* [DNS timeout](#dns-timeout)
* [Sample config entries](#sample-config-entries)
* [Peers and slots](#peers-and-slots)
* [Definitions](#definitions)
* [Assigning the right values](#assigning-the-right-values)
* [Memory impact](#memory-impact)
* [Max memory usage setting](#max-memory-usage-setting)
* [Reduce disk usage](#reduce-disk-usage)
* [Send and receive buffer size](#send-and-receive-buffer-size)
* [Preloading pieces](#preloading-pieces)
* [Max open files](#max-open-files)
* [Disk allocation](#disk-allocation)
* [Session save](#session-save)
* [Disable built-in DNS cache](#disable-built-in-dns-cache)
* [System wide settings](#system-wide-settings)
* [Max open files](#max-open-files)
* [Networking tweaks](#networking-tweaks)
* [Max open files](#max-open-files)
* [Networking tweaks](#networking-tweaks)
* [Name resolving enhancements](#name-resolving-enhancements)
* [rTrorrent with c-ares](#rtrorrent-with-c-ares)
* [Local DNS cache](#local-dns-cache)
* [rTrorrent with c-ares](#rtrorrent-with-c-ares)
* [Local DNS cache](#local-dns-cache)
* [References](#references)
@@ -212,9 +212,10 @@ schedule2 = session_save, 1200, 43200, ((session.save))
(_What is this for??? `schedule2 = prune_file_status, 3600, 86400, ((system.file_status_cache.prune))`_)
### DNS timeout
### Disable built-in DNS cache
Along with [Name resolving enhancements](#name-resolving-enhancements) we can reduce http DNS cache timeout with `network.http.dns_cache_timeout`. Since we set it in [Networking tweaks](#networking-tweaks) to `30`, let's lower it to `25`. Default is `60` sec.
Along with [Name resolving enhancements](#name-resolving-enhancements) we can disable the built-in DNS cache of `curl`
in favor of an external one with `network.http.dns_cache_timeout.set=0`. Default is `60` sec.
## System wide settings