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cb18a5183 Fix broken link 07a0198bf Config: Place Google Analytics tag ID under the services key 4bf0c719f Fix typo 50d8ad1af Fix muiltilingual menu definition instructions 1a32519a9 Fix typos 6f34ca8e0 Explain usage of front matter to target a template 5bd977257 Improve goldmark config docs 447632938 Remove Docker notes from installation instructions 84741d173 Update reference to hugo.work 0338d7c71 Fix menu template f5d2f5ed4 Fix typos in content/en/functions/fmt a3a40ff99 Add return type to functions 85ac3e779 Remove outdated feature image d47d889e4 Fix signatures 7551ba28f Document safe.JSStr function e77993be0 Document keyVals function 4dba20db3 Update theme babf91544 Update echoparam 8c8203efa Adjust related functions 4cb1b30fc Fix example ba95eca64 Improve showcase prose 5d3dcf366 Add Overmind Studios showcase 8d634ac70 Change code blocks from indented to fenced cfab978e6 Add missing code fences 407dd5c47 Limit related pages for functions to other functions 9fa67d981 Fix .Site.LastChange doc 393aa16d0 netlify: Hugo 0.119.0 f864af97a docs: Even more about images.Process 9d772d5f0 docs: More about images.Process bc655f869 docs: Regen docshelper 41c3536d1 Merge commit '9aec42c5452b3eb224888c50ba1c3f3b68a447e9' 918ed53f4 Add images.Process filter 573645883 Add $image.Process a1151b0fd Add images.Opacity filter git-subtree-dir: docs git-subtree-split: cb18a5183fc62f301ffde50b8c39f03e4b897aec
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| title | description | menu | weight | toc | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Build performance | An overview of features used for diagnosing and improving performance issues in site builds. |
|
30 | true |
Template metrics
Hugo is a very fast static site generator, but it is possible to write inefficient templates. Hugo's template metrics feature is extremely helpful in pinpointing which templates are executed most often and how long those executions take in terms of CPU time.
| Metric Name | Description |
|---|---|
| cumulative duration | The cumulative time spent executing a given template. |
| average duration | The average time spent executing a given template. |
| maximum duration | The maximum time a single execution took for a given template. |
| count | The number of times a template was executed. |
| template | The template name. |
▶ hugo --templateMetrics
Started building sites ...
Built site for language en:
0 draft content
0 future content
0 expired content
2 regular pages created
22 other pages created
0 non-page files copied
0 paginator pages created
4 tags created
3 categories created
total in 18 ms
Template Metrics:
cumulative average maximum
duration duration duration count template
---------- -------- -------- ----- --------
6.419663ms 583.605µs 994.374µs 11 _internal/_default/rss.xml
4.718511ms 1.572837ms 3.880742ms 3 indexes/category.html
4.642666ms 2.321333ms 3.282842ms 2 posts/single.html
4.364445ms 396.767µs 2.451372ms 11 partials/header.html
2.346069ms 586.517µs 903.343µs 4 indexes/tag.html
2.330919ms 211.901µs 2.281342ms 11 partials/header.includes.html
1.238976ms 103.248µs 446.084µs 12 posts/li.html
972.16µs 972.16µs 972.16µs 1 _internal/_default/sitemap.xml
953.597µs 953.597µs 953.597µs 1 index.html
822.263µs 822.263µs 822.263µs 1 indexes/post.html
567.498µs 51.59µs 112.205µs 11 partials/navbar.html
348.22µs 31.656µs 88.249µs 11 partials/meta.html
346.782µs 173.391µs 276.176µs 2 posts/summary.html
235.184µs 21.38µs 124.383µs 11 partials/footer.copyright.html
132.003µs 12µs 117.999µs 11 partials/menu.html
72.547µs 6.595µs 63.764µs 11 partials/footer.html
{{% note %}} A note about parallelism
Hugo builds pages in parallel where multiple pages are generated simultaneously. Because of this parallelism, the sum of "cumulative duration" values is usually greater than the actual time it takes to build a site. {{% /note %}}
Cached partials
Some partial templates such as sidebars or menus are executed many times
during a site build. Depending on the content within the partial template and
the desired output, the template may benefit from caching to reduce the number
of executions. The partialCached template function provides
caching capabilities for partial templates.
{{% note %}}
Note that you can create cached variants of each partial by passing additional
parameters to partialCached beyond the initial context. See the
partialCached documentation for more details.
{{% /note %}}