public long used;
        public long committed;
        public long max;
        public short percent;
    }

    public static class JvmMemoryNonHeapObj {
        public long used;
        public long committed;
        public long max;
        public short percent;
    }

    public static class JvmPoolObj {
        public String key;
        public long count;

     * percent-encoded in a path.
     *
     * See https://url.spec.whatwg.org/#percent-encoded-bytes
     */
    fun newInstance(): UrlComponentEncodingTester {
      return UrlComponentEncodingTester()
        .allAscii(Encoding.IDENTITY)
        .nonPrintableAscii(Encoding.PERCENT)
        .override(
          Encoding.SKIP,
          '\t'.code,

 *
 *  * Characters in `encodeSet` are percent-encoded.
 *
 *  * Control characters and non-ASCII characters are percent-encoded.
 *
 *  * All other characters are copied without transformation.
 *
 * @param alreadyEncoded true to leave '%' as-is; false to convert it to '%25'.
 * @param strict true to encode '%' if it is not the prefix of a valid percent encoding.

  /**
   * Returns an {@link Escaper} instance that escapes strings so they can be safely included in <a
   * href="https://url.spec.whatwg.org/#application-x-www-form-urlencoded-percent-encode-set">URL
   * form parameter names and values</a>. Escaping is performed with the UTF-8 character encoding.
   * The caller is responsible for <a

        append(buf, "committed", () -> mem.getHeapCommitted().getBytes()).append(',');
        append(buf, "max", () -> mem.getHeapMax().getBytes()).append(',');
        append(buf, "percent", () -> mem.getHeapUsedPercent());
        buf.append("},");
        buf.append("\"non_heap\":{");
        append(buf, "used", () -> mem.getNonHeapUsed().getBytes()).append(',');

  /**
   * Returns an {@link Escaper} instance that escapes strings so they can be safely included in <a
   * href="https://url.spec.whatwg.org/#application-x-www-form-urlencoded-percent-encode-set">URL
   * form parameter names and values</a>. Escaping is performed with the UTF-8 character encoding.
   * The caller is responsible for <a

    }

    public boolean calibrateCpuLoad(final long timeoutInMillis) {
        final short percent = ComponentUtil.getFessConfig().getAdaptiveLoadControlAsInteger().shortValue();
        if (percent <= 0) {
            return true;
        }
        short current = getSystemCpuPercent();
        if (current < percent) {
            return true;
        }
        final long startTime = getCurrentTimeAsLong();

  fun toUriWithControlCharacters() {
    // Percent-encoded in the path.
    assertThat("http://host/a\u0000b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%00b"))
    assertThat("http://host/a\u0080b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%C2%80b"))
    assertThat("http://host/a\u009fb".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%C2%9Fb"))
    // Percent-encoded in the query.

 *
 * ### Percent encoding
 *
 * Percent encoding replaces a character (like `\ud83c\udf69`) with its UTF-8 hex bytes (like
 * `%F0%9F%8D%A9`). This approach works for whitespace characters, control characters, non-ASCII
 * characters, and characters that already have another meaning in a particular context.
 *

  }

  @Test
  fun usernameCharacters() {
    if (!isJvm) return // TODO: this test is broken on non-JVM platforms.
    UrlComponentEncodingTester.newInstance()
      .override(
        Encoding.PERCENT,
        '['.code,
        ']'.code,
        '{'.code,
        '}'.code,
        '|'.code,
        '^'.code,
        '\''.code,
        ';'.code,
        '='.code,
        '@'.code,
      )