To get there, click _"Performance"_ in the left hand navigation menu
or follow the "Explore performance" link on the build scan home page:

image::performance/build-scan-home.png[title="Performance page link on build scan home page"]

The performance page shows how long it took to complete different stages of a build.
This page shows how long it took to:

- start up

    private static final List<Person> FAMILY = new ArrayList<Person>() {{
        add(HOMER);
        add(MARGE);
        add(BART);
        add(LISA);
        add(MAGGIE);
    }};

    public static Person homer() { return HOMER; }

    public static Person marge() { return MARGE; }

    public static Person bart() { return BART; }

```Python hl_lines="6"
{!../../../docs_src/path_params/tutorial004.py!}
```

!!! tip "Dica"
	Você poderia precisar que o parâmetro contivesse `/home/johndoe/myfile.txt`, com uma barra no inicio (`/`).

	Neste caso, a URL deveria ser: `/files//home/johndoe/myfile.txt`, com barra dupla (`//`) entre `files` e `home`.


## Recapitulando

Com o **FastAPI**, usando as declarações de tipo do Python, você obtém:

    private static final List<Person> FAMILY = new ArrayList<Person>() {{
        add(HOMER);
        add(MARGE);
        add(BART);
        add(LISA);
        add(MAGGIE);
    }};

    public static Person homer() { return HOMER; }

    public static Person marge() { return MARGE; }

    public static Person bart() { return BART; }

        [:]
    }

    private static Map<String, String> invalidVersion() {
        // emulates a valid binary that would not return the correct version number
        ['java.home': "java-home",
         'java.version': "bad luck",
         'java.vendor': "Oracle Corporation",
         'os.arch': "amd64",
         'java.vm.name': "OpenJDK 64-Bit Server VM",
         'java.vm.version': "25.40-b25",

            new File("/Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home"),
            new File("/Library/Java/JavaVirtualMachines/jdk1.7.0_17.jdk/Contents/Home"),
            new File("/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home"),
            new File("/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home"),
        ])
        result.size() == 8
    }

        services.get(SomeHomeDirService).homeDir == dir2
        homeDirService.closed
    }

    def "creates new services when home dir is different to home dir currently in use"() {
        def dir1 = new File("home-dir-1")
        def dir2 = new File("home-dir-2")

        given:
        def servicesBefore = homeDirServices.getServicesFor(dir1)
        def globalService = servicesBefore.get(SomeGlobalService)

        }

        then:
        home.file(theOs.getExecutableName("jre/bin/javadoc")).absolutePath ==
            Jvm.forHome(home.file("jre")).getExecutable("javadoc").absolutePath
    }

    def "finds tools.jar if java home supplied"() {
        System.properties['java.vm.vendor'] = 'Sun'

        when:
        def home = tmpDir.createDir("home")
        home.create {
            jdk {

[GOOS:windows] env userconfig=$AppData
env HOME=$WORK/userconfig # darwin,unix,ios
[GOOS:darwin] env userconfig=$HOME'/Library/Application Support'
[GOOS:ios] env userconfig=$HOME'/Library/Application Support'
[!GOOS:windows] [!GOOS:darwin] [!GOOS:ios] [!GOOS:plan9] env userconfig=$HOME/.config
env home=$WORK/userconfig # plan9
[GOOS:plan9] env userconfig=$home/lib

go telemetry
stdout 'local'

go telemetry off

        pathMapping.setRegex("file:///home/");
        pathMapping.setReplacement("http://localhost/");
        pathMappingList.add(pathMapping);

        pathMappingHelper.cachedPathMappingList = pathMappingList;

        String text = "\"file:///home/\"";
        assertEquals("\"http://localhost/\"", pathMappingHelper.replaceUrls(text));

        text = "\"file:///home/user/\"";