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Cluster Membership

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Configuration

Environment: Network Emulator settings:

• Run over Network Emulator 1% message loss
• Log to file with WARN level async 2ms avg. message delay
• Exponential distribution of message delay

Gossip Protocol Settings:

Gossip Protocol Settings:          Failure Detector settings:          Cluster Membership Settings:
gossipPeriod = 300 ms	           pingTime = 1000;	               syncTime = 30.000 ms	
maxGossipRecipients = 3	           pingTimeout = 100;	               syncTimeout = 5.000 ms	
maxGossipSends = 2 * log2(N)	   K * = 3	                       maxSuspectTime = 30.000 ms	

Test Setting Runs** = 100

• K - number of nodes for sending indirect ping message **Each test has been ran RUNS time, and average value was taken as a result

Started Components: Network Emulator GossipProtocol Failure Detector ClusterMembership

Cluster Membership Dissemination

Number of nodes (N)	Time (ms)	traffic per node (bytes/sec)	Overall traffic (bytes/sec)
5	2154	821	2821
10	2990	1136	12884
20	2716	870	27205
30	2859	656	27032
50	3483	588	43753
100	3177	661	117801
150	3734	584	162940
200	3617	582	227057

Failure Detector:

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Configuration

Environment: Network Emulator settings:

• Run over Network Emulator with 1% message loss
• Log to file with WARN level async
• 2ms avg. message delay
• Exponential distribution of message delay

Failure Detector settings:

• pingTime = 1000;
• pingTimeout = 100;
• K * = 3

Test Setting Runs** = 100

• K - number of nodes for sending indirect ping message
• Each test has been ran RUNS time, and average value was taken as a result

Started Components: Network Emulator Failure Detector

Failure detection

Number of nodes (N)	Time (ms)	traffic per node (bytes/sec)	overall traffic (bytes/sec)
5	1440	1949,13	7834,1
20	1589	2744,25	51396,4
50	1559	2824,54	139099,49
100	1639	3074,51	288807,07
150	1519	2830,93	434320,9
200	1596	2980,83	580232,34