Changes between Version 18 and Version 19 of TracPerformance

Timestamp:

May 1, 2018, 11:10:49 AM (6 years ago)

Author:

anonymous

Comment:

—

TracPerformance

@@ -3 +3 @@
 = Trac and Performance
 
-After the adoption of the [genshi:Genshi] template engine in [/milestone/0.11 Trac 0.11] in 2008, some associated performance issues were also solved (#6614). There are however, still occasional concerns over Trac's performance.
+This page collects Trac performance issues, solutions and troubleshooting.
 
 When dealing with performance degradation on a Trac installation there are some potential causes to consider:
  - a large number of plugins may add to the load in subtle ways
- - the new security model of TracFineGrainedPermissions
+ - the security model of TracFineGrainedPermissions
  - the conditions in which Trac is run (web front-end)
  - the specific configuration settings of Trac
  - various bugs that might be triggered by any of the above
-
-This page collects Trac performance issues, solutions and troubleshooting.
 
 == Check your installation #Installation
@@ -33 +31 @@
 == Check your configuration #Configuration
 
-Several settings enhance Trac in one way or the other, but have a performance cost, which in some cases can be large.
+Several settings enhance Trac in one way or the other, but have a performance cost, which in some cases can be large. Other settings can help improve (perceived) performance.
 
 === `[timeline]` #timeline-section
@@ -47 +45 @@
  - use of `restrict_owner = true` can be slow on some installations (see #4245, #8034, #8212).
 
+=== `[trac]` #trac-section
+ - `use_chunked_encoding`
+ - `use_xsendfile` and `xsendfile_header`
+
+=== `[git]` #git-section
+ - Use of `trac_user_rlookup` can reduce performance if there are many users and the `cached_repository` option is disabled.
+ - `persistent_cache` and `cached_repository`
+
+=== `[gitweb-repositories]` #gitweb-repositories-section
+ - `sync_per_request` option.
+
 == Check your [TracLogging trac.log] #Log
 
@@ -56 +65 @@
  - WARNING message: '''Slow mail submission''' [[br]]
    A mis-configured or simply slow mail server make Trac appear very slow (#3220).
+ - Excessive permission checks.
+ - Enable `[trac] debug_sql` and check DEBUG messages for excessive SQL queries.
+
+== Templates
+ - After the adoption of the [genshi:Genshi] template engine in [/milestone/0.11 Trac 0.11] in 2008, some associated performance issues were also solved (#6614).
+ - In Trac 1.3 the Jinja template engine was adopted instead, for improved performance on certain big pages (#12639) Many plugins still use the slower Genshi templates though.
+ - Plugins that use the `ITemplateStreamFilter` interface prevent the performance improvements gained by using Jinja.
 
 == Unsorted