append(buf, "percent", () -> osProbe.getSystemCpuPercent());
        final OsStats osStats = osProbe.osStats();
        buf.append("},");
        append(buf, "load_averages", () -> osStats.getCpu().getLoadAverage());
        buf.append("},");
    }

    private void appendFesenStats(final StringBuilder buf) {
        String stats = null;
        try {

import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.action.admin.cluster.node.stats.NodeStats;
import org.opensearch.action.admin.cluster.node.stats.NodesStatsResponse;
import org.opensearch.monitor.os.OsStats;

/**
 * Timeout target that periodically monitors search engine CPU usage.
 */
public class LoadControlMonitorTarget implements TimeoutTarget {

        // Log all available stats fields for debugging
        logger.info("Available stats fields: {}", res.keySet());

        // Verify response contains meaningful data
        assertNotNull(res, "Stats response should not be null");
        assertTrue(res.size() > 0, "Stats should contain at least some data");

        // Check for common stats fields (these may need to be adjusted based on actual implementation)

		<Property name="log.file.basedir" value="${sys:fess.log.path:-target/logs}" />
		<Property name="backup.date.suffix" value="_%d{yyyyMMdd}" />
		<Property name="backup.max.history" value="10" />
		<Property name="stats.log.pattern" value="%msg%n" />
	</Properties>

	<Appenders>
		<RollingFile name="AppRollingFile" fileName="${log.file.basedir}/${domain.name}.log"