hydra.timeserver

Class TimeServerPrms

java.lang.Object

hydra.BasePrms

hydra.timeserver.TimeServerPrms

public class TimeServerPrms
extends BasePrms

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.Long	clockSkewMaxLatencyMs (long) Number of milliseconds of latency allowed in a clock skew update.
static java.lang.Long	clockSkewSamplesToAverage (int) Number of clock skew samples to average for each update to the clock skew Defaults to DEFAULT_CLOCK_SKEW_SAMPLES_TO_AVERAGE
static java.lang.Long	clockSkewThresholdMs (long) Number of milliseconds of clock skew in System.currentTimeMillis() a test will tolerate between multiple hosts on startup.
static java.lang.Long	clockSkewUpdateFrequencyMs (long) Number of milliseconds to sleep in between updates to the clock skew in System.nanoTime between the client VMs and the master controller.
static int	DEFAULT_CLOCK_SKEW_MAX_LATENCY_MS
static int	DEFAULT_CLOCK_SKEW_SAMPLES_TO_AVERAGE
static long	DEFAULT_CLOCK_SKEW_THRESHOLD_MS
static int	DEFAULT_CLOCK_SKEW_UPDATE_FREQUENCY_MS
static boolean	DEFAULT_ERROR_ON_EXCEEDED_CLOCK_SKEW_THRESHOLD
static java.lang.Long	errorOnExceededClockSkewThreshold (boolean) Whether a test should fail if it exceeds clockSkewThresholdMs.

Fields inherited from class hydra.BasePrms

DASH, DEFAULT, NONE

Constructor Summary

Constructors

Constructor and Description
TimeServerPrms()

Method Summary

Modifier and Type	Method and Description
static int	clockSkewMaxLatencyMs()
static int	clockSkewSamplesToAverage()
static long	clockSkewThresholdMs()
static long	clockSkewThresholdMs(TestConfig tc) This method allows the hostagent to use its own sub-configuration
static int	clockSkewUpdateFrequencyMs()
static boolean	errorOnExceededClockSkewThreshold()
static boolean	errorOnExceededClockSkewThreshold(TestConfig tc) This method allows the hostagent to use its own sub-configuration
static void	main(java.lang.String[] args)

Methods inherited from class hydra.BasePrms

dumpKeys, keyForName, nameForKey, setValues, tab, tasktab

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

clockSkewThresholdMs

public static java.lang.Long clockSkewThresholdMs

(long) Number of milliseconds of clock skew in System.currentTimeMillis() a test will tolerate between multiple hosts on startup. Defaults to DEFAULT_CLOCK_SKEW_THRESHOLD_MS, which tolerates any amount of skew. If the threshold is exceeded, hydra will attempt to resynchronize the clocks via NTP. If this fails, hydra honors errorOnExceededClockSkewThreshold.

Since:

5.0

DEFAULT_CLOCK_SKEW_THRESHOLD_MS

public static final long DEFAULT_CLOCK_SKEW_THRESHOLD_MS

See Also:

Constant Field Values

errorOnExceededClockSkewThreshold

public static java.lang.Long errorOnExceededClockSkewThreshold

(boolean) Whether a test should fail if it exceeds clockSkewThresholdMs. Defaults to false, but note that, even when true, this has no effect if the default threshold is used.

Since:

5.0

DEFAULT_ERROR_ON_EXCEEDED_CLOCK_SKEW_THRESHOLD

public static final boolean DEFAULT_ERROR_ON_EXCEEDED_CLOCK_SKEW_THRESHOLD

See Also:

Constant Field Values

clockSkewUpdateFrequencyMs

public static java.lang.Long clockSkewUpdateFrequencyMs

(long) Number of milliseconds to sleep in between updates to the clock skew in System.nanoTime between the client VMs and the master controller. Defaults to DEFAULT_CLOCK_SKEW_UPDATE_FREQUENCY_MS, which that the client will not calculate clock skew for System.nanoTime.

Since:

5.0

DEFAULT_CLOCK_SKEW_UPDATE_FREQUENCY_MS

public static final int DEFAULT_CLOCK_SKEW_UPDATE_FREQUENCY_MS

See Also:

Constant Field Values

clockSkewMaxLatencyMs

public static java.lang.Long clockSkewMaxLatencyMs

(long) Number of milliseconds of latency allowed in a clock skew update. Responses from the master controller with a higher latency will be discarded. Defaults to DEFAULT_CLOCK_SKEW_MAX_LATENCY_MS

Since:

5.0

DEFAULT_CLOCK_SKEW_MAX_LATENCY_MS

public static final int DEFAULT_CLOCK_SKEW_MAX_LATENCY_MS

See Also:

Constant Field Values

clockSkewSamplesToAverage

public static java.lang.Long clockSkewSamplesToAverage

(int) Number of clock skew samples to average for each update to the clock skew Defaults to DEFAULT_CLOCK_SKEW_SAMPLES_TO_AVERAGE

Since:

5.0

DEFAULT_CLOCK_SKEW_SAMPLES_TO_AVERAGE

public static final int DEFAULT_CLOCK_SKEW_SAMPLES_TO_AVERAGE

See Also:

Constant Field Values

Constructor Detail

TimeServerPrms

public TimeServerPrms()

Method Detail

clockSkewThresholdMs

public static long clockSkewThresholdMs()

clockSkewThresholdMs

public static long clockSkewThresholdMs(TestConfig tc)

This method allows the hostagent to use its own sub-configuration

errorOnExceededClockSkewThreshold

public static boolean errorOnExceededClockSkewThreshold()

errorOnExceededClockSkewThreshold

public static boolean errorOnExceededClockSkewThreshold(TestConfig tc)

This method allows the hostagent to use its own sub-configuration

clockSkewUpdateFrequencyMs

public static int clockSkewUpdateFrequencyMs()

clockSkewMaxLatencyMs

public static int clockSkewMaxLatencyMs()

clockSkewSamplesToAverage

public static int clockSkewSamplesToAverage()

main

public static void main(java.lang.String[] args)