Code review comment: I assume what you are saying if on the ServiceEndpoint we had successful requests very recently let's throw away the failed channel rather faster because chances are good that other channels are healthy?

Code under review:
private String transitTimeoutValidation(Timestamps timestamps, Instant currentTime, RntbdRequestManager requestManager, Channel channel) {
        String transitTimeoutValidationMessage = StringUtils.EMPTY;

        if (this.timeoutDetectionEnabled && timestamps.transitTimeoutCount() > 0) {
            final Optional<RntbdContext> rntbdContext = requestManager.rntbdContext();

            
            
            long readDelay = Duration.between(timestamps.lastChannelReadTime(), currentTime).toNanos();
            if (readDelay >= this.timeoutTimeLimitInNanos) {
                transitTimeoutValidationMessage = MessageFormat.format(
                    "{0} health check failed due to transit timeout detection time limit: [rntbdContext: {1},"
                        + "lastChannelRead: {2}, timeoutTimeLimitInNanos: {3}]",
                    channel,
                    rntbdContext,
                    timestamps.lastReadTime,
                    this.timeoutTimeLimitInNanos);

                logger.warn(transitTimeoutValidationMessage);
                return transitTimeoutValidationMessage;
            }

            
            
            if (timestamps.transitTimeoutCount() >= this.timeoutHighFrequencyThreshold
                && readDelay >= this.timeoutHighFrequencyTimeLimitInNanos) {
                transitTimeoutValidationMessage = MessageFormat.format(
                    "{0} health check failed due to transit timeout high frequency threshold hit: [rntbdContext: {1},"
                        + "lastChannelRead: {2}, transitTimeoutCount: {3}, timeoutHighFrequencyThreshold: {4}, timeoutHighFrequencyTimeLimitInNanos: {5}]",
                    channel,
                    rntbdContext,
                    timestamps.lastReadTime,
                    timestamps.transitTimeoutCount,
                    this.timeoutHighFrequencyThreshold,
                    this.timeoutHighFrequencyTimeLimitInNanos);

                logger.warn(transitTimeoutValidationMessage);
                return transitTimeoutValidationMessage;
            }

            
            
            if (timestamps.tansitTimeoutWriteCount() >= this.timeoutOnWriteThreshold
                && readDelay >= this.timeoutOnWriteTimeLimitInNanos) {
                transitTimeoutValidationMessage = MessageFormat.format(
                    "{0} health check failed due to transit timeout on write threshold hit: [rntbdContext: {1},"
                        + "lastChannelRead: {2}, transitTimeoutWriteCount: {3}, timeoutOnWriteThreshold: {4}, timeoutOnWriteTimeLimitInNanos: {5}]",
                    channel,
                    rntbdContext,
                    timestamps.lastReadTime,
                    timestamps.transitTimeoutWriteCount,
                    this.timeoutOnWriteThreshold,
                    this.timeoutOnWriteTimeLimitInNanos);

                logger.warn(transitTimeoutValidationMessage);
                return transitTimeoutValidationMessage;
            }

            
        }

        return transitTimeoutValidationMessage;
    }


Revised code:
private String transitTimeoutValidation(Timestamps timestamps, Instant currentTime, RntbdRequestManager requestManager, Channel channel) {
        String transitTimeoutValidationMessage = StringUtils.EMPTY;

        if (this.timeoutDetectionEnabled && timestamps.transitTimeoutCount() > 0) {

            
            
            
            if (CpuMemoryMonitor.getCpuLoad().isCpuOverThreshold(this.timeoutDetectionDisableCPUThreshold)) {
                return transitTimeoutValidationMessage;
            }

            final Optional<RntbdContext> rntbdContext = requestManager.rntbdContext();

            
            
            long readDelay = Duration.between(timestamps.lastChannelReadTime(), currentTime).toNanos();
            if (readDelay >= this.timeoutTimeLimitInNanos) {
                transitTimeoutValidationMessage = MessageFormat.format(
                    "{0} health check failed due to transit timeout detection time limit: [rntbdContext: {1},"
                        + "lastChannelRead: {2}, timeoutTimeLimitInNanos: {3}]",
                    channel,
                    rntbdContext,
                    timestamps.lastReadTime,
                    this.timeoutTimeLimitInNanos);

                logger.warn(transitTimeoutValidationMessage);
                return transitTimeoutValidationMessage;
            }

            
            
            if (timestamps.transitTimeoutCount() >= this.timeoutHighFrequencyThreshold
                && readDelay >= this.timeoutHighFrequencyTimeLimitInNanos) {
                transitTimeoutValidationMessage = MessageFormat.format(
                    "{0} health check failed due to transit timeout high frequency threshold hit: [rntbdContext: {1},"
                        + "lastChannelRead: {2}, transitTimeoutCount: {3}, timeoutHighFrequencyThreshold: {4}, timeoutHighFrequencyTimeLimitInNanos: {5}]",
                    channel,
                    rntbdContext,
                    timestamps.lastReadTime,
                    timestamps.transitTimeoutCount,
                    this.timeoutHighFrequencyThreshold,
                    this.timeoutHighFrequencyTimeLimitInNanos);

                logger.warn(transitTimeoutValidationMessage);
                return transitTimeoutValidationMessage;
            }

            
            
            if (timestamps.tansitTimeoutWriteCount() >= this.timeoutOnWriteThreshold
                && readDelay >= this.timeoutOnWriteTimeLimitInNanos) {
                transitTimeoutValidationMessage = MessageFormat.format(
                    "{0} health check failed due to transit timeout on write threshold hit: [rntbdContext: {1},"
                        + "lastChannelRead: {2}, transitTimeoutWriteCount: {3}, timeoutOnWriteThreshold: {4}, timeoutOnWriteTimeLimitInNanos: {5}]",
                    channel,
                    rntbdContext,
                    timestamps.lastReadTime,
                    timestamps.transitTimeoutWriteCount,
                    this.timeoutOnWriteThreshold,
                    this.timeoutOnWriteTimeLimitInNanos);

                logger.warn(transitTimeoutValidationMessage);
                return transitTimeoutValidationMessage;
            }
        }

        return transitTimeoutValidationMessage;
    }