kallithea Changeset - d02c715e2805

Changeset - d02c715e2805

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Mads Kiilerich - 9 years ago 2017-01-03 02:06:41
mads@kiilerich.com

docs: tweak formatting of the performance page - replace the odd numbered list with sections

1 file changed with 38 insertions and 25 deletions:

docs/usage/performance.rst

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docs/usage/performance.rst

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@@ @@ -4,43 +4,54 @@ @@
 Optimizing Kallithea performance
 ================================
 When serving a large amount of big repositories, Kallithea can start
 performing slower than expected. Because of the demanding nature of handling large
 amounts of data from version control systems, here are some tips on how to get
 the best performance.
 When serving a large amount of big repositories, Kallithea can start performing
 slower than expected. Because of the demanding nature of handling large amounts
 of data from version control systems, here are some tips on how to get the best
 performance.
 Follow these few steps to improve performance of Kallithea system.
 Fast storage
 ------------
 .  Kallithea is often I/O bound, and hence a fast disk (SSD/SAN) is
     usually more important than a fast CPU.
 Kallithea is often I/O bound, and hence a fast disk (SSD/SAN) and plenty of RAM
 is usually more important than a fast CPU.
 . Increase cache
 Caching
 -------
     Tweak beaker cache settings in the ini file. The actual effect of that
     is questionable.
 Tweak beaker cache settings in the ini file. The actual effect of that is
 questionable.
 . Switch from SQLite to PostgreSQL or MySQL
 Database
 --------
     SQLite is a good option when having a small load on the system. But due to
     locking issues with SQLite, it is not recommended to use it for larger
     deployments. Switching to MySQL or PostgreSQL will result in an immediate
     performance increase. A tool like SQLAlchemyGrate_ can be used for
     migrating to another database platform.
 deployments.
 Switching to MySQL or PostgreSQL will result in an immediate performance
 increase. A tool like SQLAlchemyGrate_ can be used for migrating to another
 database platform.
 . Scale Kallithea horizontally
 Horizontal scaling
 ------------------
     Scaling horizontally can give huge performance benefits when dealing with
     large amounts of traffic (many users, CI servers, etc.). Kallithea can be
     scaled horizontally on one (recommended) or multiple machines.
 Scaling horizontally means running several Kallithea instances and let them
 share the load. That can give huge performance benefits when dealing with large
 amounts of traffic (many users, CI servers, etc.). Kallithea can be scaled
 horizontally on one (recommended) or multiple machines.
     It is generally possible to run WSGI applications multithreaded, so that
     several HTTP requests are served from the same Python process at once. That
     can in principle give better utilization of internal caches and less
     process overhead.
 several HTTP requests are served from the same Python process at once. That can
 in principle give better utilization of internal caches and less process
 overhead.
     One danger of running multithreaded is that program execution becomes much
     more complex; programs must be written to consider all combinations of
     events and problems might depend on timing and be impossible to reproduce.
 One danger of running multithreaded is that program execution becomes much more
 complex; programs must be written to consider all combinations of events and
 problems might depend on timing and be impossible to reproduce.
     Kallithea can't promise to be thread-safe, just like the embedded Mercurial
     backend doesn't make any strong promises when used as Kallithea uses it.
@@ @@ -65,7 +76,9 @@ Follow these few steps to improve perfor @@
       that will separate regular user traffic from automated processes like CI
       servers or build bots.
 . Serve static files directly from the web server
 Serve static files directly from the web server
 -----------------------------------------------
 With the default ``static_files`` ini setting, the Kallithea WSGI application
 will take care of serving the static files found in ``kallithea/public`` from

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