11.13.2 Statistics (eads_stats.csv)

(1) Information output as statistics (eads_stats.csv)

The following table lists and describes the information that is output as statistics (eads_stats.csv).

Table 11‒1: Information output as statistics (eads_stats.csv)

No.	Purpose	Classification	Item	Column name	Output value	Related parameter
1	Checking status	Common item	Date statistics were output	Date	Current value	--
2			Time statistics were output	Time	Current value
3			IP address of EADS server for which statistics are output and the EADS server's port number used for communication with EADS clients	ThisNode	Setting	eads.server.address eads.server.port
4	Re-evaluating tuning	Memory and buffer	Maximum size of receive data between EADS client and EADS servers (bytes)	CSReadMaxSize	Statistic	eads.server.connection.buffersize
5			Total size of receive data between EADS client and EADS servers (bytes)	CSReadTotalSize	Statistic	eads.server.connection.buffersize eads.replication.connection.buffersize
6			Maximum size of send data between EADS client and EADS servers (bytes)	CSWriteMaxSize	Statistic
7			Total size of send data between EADS client and EADS servers (bytes)	CSWriteTotalSize	Statistic
8			Maximum size of receive data between EADS servers (bytes)	SSReadMaxSize	Statistic
9			Total size of receive data between EADS servers (bytes)	SSReadTotalSize	Statistic
10			Maximum size of send data between EADS servers (bytes)	SSWriteMaxSize	Statistic
11			Total size of send data between EADS servers (bytes)	SSWriteTotalSize	Statistic
12			Total size of data transmitted from source EADS server in order to copy data to EADS server to be restored or EADS server added by scale-out processing (bytes)	TransferCopyDataWriteTotalSize	Statistic	eads.transfer.datasize
13			Total size of all data#3 sent from source EADS server to EADS server to be restored or EADS server added by scale-out processing (bytes)	TransferWriteTotalSize	Statistic
14	Re-evaluating resource estimations	Number of data items	Number of keys stord in cache	KeyCount	Current value	eads.node.EADS-server-ID.position
15		Memory usage amount	Current memory usage amount (sum of values in memory caches) (megabytes)#4	UsedMemorySize	Current value
16			Maximum memory size for storing values (megabytes)#4	MaxMemorySize	Setting	eads.java.heapsize eads.java.external.heapsize
17			Size of space being used in the area for storing the history of update operations (megabytes)#4	HistoriesMemorySize	Current value	eads.replication.external.heapsize
18			Maximum size of the area for storing the history of update operations (megabytes)#4	MaxHistoriesMemorySize	Setting
19		Execution count	Total number of requests accepted (put, create, update, replace, get, remove)	RequestCount	Statistic	eads.node.EADS-server-ID.position
20			Total number of times individual user functions were executed	AllFunctionExecuteCount	Statistic
21	EADS server performance measurement	Performance	Average internal processing time#1 (microseconds)	InternalProcessingAverageTime	Statistic
22			Maximum request processing time#2 (microseconds)	RequestProcessingMaxTime	Statistic
23			Average request processing time#2 (microseconds)	RequestProcessingAverageTime	Statistic
24			Minimum request processing time#2 (microseconds)	RequestProcessingMinTime	Statistic

Legend:

--: There is no related parameter.

#1

This is the average time spent for the following request processing excluding creation of redundant copies of data:

• put and remove processing

• create, update, or replace processing to update data

#2

This is the time required to process the entire request (put or remove processing or create, update, or replace processing to update data) on the first EADS server whose data is manipulated.

#3

During restoration or scale-out processing, the following data is sent to the EADS server subject to restoration or the EADS server that was added during scale-out processing:

• Data to be copied

• If data was updated after restoration or scale-out processing started, a notification of the update operation

#4

The digits after the decimal point are truncated.

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(2) Sources for statistics used for EADS server performance measurement

The following figure gives an example of put processing, which shows the sources of the statistics used for EADS server performance measurement.

Figure 11‒1: Sources of statistics used for EADS server performance measurement (example of put processing)

Explanation

• The EADS server determines the request processing time based on the difference in time between Nos. 1 and 4. The EADS server also obtains the following statistics:

  • Maximum request processing time (RequestProcessingMaxTime)

  • Average request processing time (RequestProcessingAverageTime)

  • Minimum request processing time (RequestProcessingMinTime)

• The EADS server determines the time spent on consensus processing based on the difference in time between Nos. 2 and 3.

• The internal processing time equals the request processing time minus the time spent on consensus processing. The following statistics are obtained:

  • Average internal processing time (InternalProcessingAverageTime)

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