5b6e468952
`pungi-gather` (the tool that underlies both the `pkgset` and `gather` phases) contains profiling code that will log statistics about how long different function calls take. However, pungi-koji did not contain a way to pass the ``--profiler`` argument to enable this. This change adds a new configuration option ``gather_profiler`` which, when set to true, simply passes the argument to `pungi-koji`. Hopefully this can help shed some light on what is happening in some of our longer-running composes. Merges: https://pagure.io/pungi/pull-request/727 Signed-off-by: Ralph Bean <rbean@redhat.com>
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2.7 KiB
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77 lines
2.7 KiB
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==================
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Gathering packages
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==================
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A compose created by Pungi consists of one or more variants. A variant contains
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a subset of the content targeted at a particular use case.
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There are different types of variants. The type affects how packages are
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gathered into the variant.
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The inputs for gathering are defined by the ``gather_source`` option. It
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provides a list of package names, comps groups names and a list of packages
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that should be filtered out.
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Next, ``gather_method`` defines how the list is processed. For ``nodeps``, the
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results from source are used pretty much as is [#]_. For ``deps`` method, a
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process will be launched to figure out what dependencies are needed and those
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will be pulled in.
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.. [#] The lists are filtered based on what packages are available in the
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package set, but nothing else will be pulled in.
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Variant types
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=============
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*Variant*
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is a base type that has no special behaviour.
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*Addon*
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is built on top of a regular variant. Any packages that should go to both
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the addon and its parent will be removed from addon. Packages that are only
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in addon but pulled in because of ``gather_fulltree`` option will be moved
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to parent.
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*Integrated Layered Product*
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works similarly to *addon*. Additionally, all packages from addons on the
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same parent variant are removed integrated layered products.
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The main difference between an *addon* and *integrated layered product* is
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that *integrated layered product* has its own identity in the metadata
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(defined with product name and version).
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.. note::
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There's also *Layered Product* as a term, but this is not related to
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variants. It's used to describe a product that is not a standalone
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operating system and is instead meant to be used on some other base
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system.
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*Optional*
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contains packages that complete the base variants' package set. It always
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has ``fulltree`` and ``selfhosting`` enabled, so it contains build
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dependencies and packages which were not specifically requested for base
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variant.
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Some configuration options are overridden for particular variant types.
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.. table:: Depsolving configuration
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+-----------+--------------+--------------+
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| Variant | Fulltree | Selfhosting |
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+===========+==============+==============+
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| base | configurable | configurable |
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+-----------+--------------+--------------+
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| addon/ILP | enabled | disabled |
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+-----------+--------------+--------------+
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| optional | enabled | enabled |
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+-----------+--------------+--------------+
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Profiling
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=========
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Profiling data on the ``pungi-gather`` tool can be enabled by setting the
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``gather_profiler`` configuration option to ``True``.
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