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build: profiling with pprof #21214

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71 changes: 53 additions & 18 deletions content/manuals/build/building/variables.md
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Original file line number Diff line number Diff line change
Expand Up @@ -304,24 +304,26 @@ Note that these variables aren't used to configure the build container;
they aren't available inside the build and they have no relation to the `ENV` instruction.
They're used to configure the Buildx client, or the BuildKit daemon.

| Variable | Type | Description |
| --------------------------------------------------------------------------- | ----------------- | ---------------------------------------------------- |
| [BUILDKIT_COLORS](#buildkit_colors) | String | Configure text color for the terminal output. |
| [BUILDKIT_HOST](#buildkit_host) | String | Specify host to use for remote builders. |
| [BUILDKIT_PROGRESS](#buildkit_progress) | String | Configure type of progress output. |
| [BUILDKIT_TTY_LOG_LINES](#buildkit_tty_log_lines) | String | Number of log lines (for active steps in TTY mode). |
| [BUILDX_BAKE_GIT_AUTH_HEADER](#buildx_bake_git_auth_header) | String | HTTP authentication scheme for remote Bake files. |
| [BUILDX_BAKE_GIT_AUTH_TOKEN](#buildx_bake_git_auth_token) | String | HTTP authentication token for remote Bake files. |
| [BUILDX_BAKE_GIT_SSH](#buildx_bake_git_ssh) | String | SSH authentication for remote Bake files. |
| [BUILDX_BUILDER](#buildx_builder) | String | Specify the builder instance to use. |
| [BUILDX_CONFIG](#buildx_config) | String | Specify location for configuration, state, and logs. |
| [BUILDX_EXPERIMENTAL](#buildx_experimental) | Boolean | Turn on experimental features. |
| [BUILDX_GIT_CHECK_DIRTY](#buildx_git_check_dirty) | Boolean | Enable dirty Git checkout detection. |
| [BUILDX_GIT_INFO](#buildx_git_info) | Boolean | Remove Git information in provenance attestations. |
| [BUILDX_GIT_LABELS](#buildx_git_labels) | String \| Boolean | Add Git provenance labels to images. |
| [BUILDX_NO_DEFAULT_ATTESTATIONS](#buildx_no_default_attestations) | Boolean | Turn off default provenance attestations. |
| [BUILDX_NO_DEFAULT_LOAD](#buildx_no_default_load) | Boolean | Turn off loading images to image store by default. |
| [EXPERIMENTAL_BUILDKIT_SOURCE_POLICY](#experimental_buildkit_source_policy) | String | Specify a BuildKit source policy file. |
| Variable | Type | Description |
| --------------------------------------------------------------------------- | ----------------- | ------------------------------------------------------------ |
| [BUILDKIT_COLORS](#buildkit_colors) | String | Configure text color for the terminal output. |
| [BUILDKIT_HOST](#buildkit_host) | String | Specify host to use for remote builders. |
| [BUILDKIT_PROGRESS](#buildkit_progress) | String | Configure type of progress output. |
| [BUILDKIT_TTY_LOG_LINES](#buildkit_tty_log_lines) | String | Number of log lines (for active steps in TTY mode). |
| [BUILDX_BAKE_GIT_AUTH_HEADER](#buildx_bake_git_auth_header) | String | HTTP authentication scheme for remote Bake files. |
| [BUILDX_BAKE_GIT_AUTH_TOKEN](#buildx_bake_git_auth_token) | String | HTTP authentication token for remote Bake files. |
| [BUILDX_BAKE_GIT_SSH](#buildx_bake_git_ssh) | String | SSH authentication for remote Bake files. |
| [BUILDX_BUILDER](#buildx_builder) | String | Specify the builder instance to use. |
| [BUILDX_CONFIG](#buildx_config) | String | Specify location for configuration, state, and logs. |
| [BUILDX_CPU_PROFILE](#buildx_cpu_profile) | String | Generate a `pprof` CPU profile at the specified location. |
| [BUILDX_EXPERIMENTAL](#buildx_experimental) | Boolean | Turn on experimental features. |
| [BUILDX_GIT_CHECK_DIRTY](#buildx_git_check_dirty) | Boolean | Enable dirty Git checkout detection. |
| [BUILDX_GIT_INFO](#buildx_git_info) | Boolean | Remove Git information in provenance attestations. |
| [BUILDX_GIT_LABELS](#buildx_git_labels) | String \| Boolean | Add Git provenance labels to images. |
| [BUILDX_MEM_PROFILE](#buildx_mem_profile) | String | Generate a `pprof` memory profile at the specified location. |
| [BUILDX_NO_DEFAULT_ATTESTATIONS](#buildx_no_default_attestations) | Boolean | Turn off default provenance attestations. |
| [BUILDX_NO_DEFAULT_LOAD](#buildx_no_default_load) | Boolean | Turn off loading images to image store by default. |
| [EXPERIMENTAL_BUILDKIT_SOURCE_POLICY](#experimental_buildkit_source_policy) | String | Specify a BuildKit source policy file. |

BuildKit also supports a few additional configuration parameters. Refer to
[BuildKit built-in build args](/reference/dockerfile.md#buildkit-built-in-build-args).
Expand Down Expand Up @@ -507,6 +509,22 @@ Usage:
$ export BUILDX_CONFIG=/usr/local/etc
```

### BUILDX_CPU_PROFILE

{{< introduced buildx 0.18.0 >}}

If specified, Buildx generates a `pprof` CPU profile at the specified location.

> [!NOTE]
> This property is only useful for when developing Buildx. The profiling data
> is not relevant for analyzing a build's performance.

Usage:

```console
$ export BUILDX_CPU_PROFILE=buildx_cpu.prof
```

### BUILDX_EXPERIMENTAL

Enables experimental build features.
Expand Down Expand Up @@ -572,6 +590,23 @@ Usage:

If the repository is in a dirty state, the `revision` gets a `-dirty` suffix.

### BUILDX_MEM_PROFILE

{{< introduced buildx 0.18.0 >}}

If specified, Buildx generates a `pprof` memory profile at the specified
location.

> [!NOTE]
> This property is only useful for when developing Buildx. The profiling data
> is not relevant for analyzing a build's performance.

Usage:

```console
$ export BUILDX_MEM_PROFILE=buildx_mem.prof
```

### BUILDX_NO_DEFAULT_ATTESTATIONS

{{< introduced buildx 0.10.4 "../release-notes.md#0104" >}}
Expand Down
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