Interstage Shunsaku Data Manager Operator's Guide - Microsoft(R) Windows(R) 2000/ Microsoft(R) Windows Server(TM) 2003 - - UNIX -

D.2.3 Memory Requirements for Conductors

This section explains the formulas for estimating how much memory conductors will use.

Shared Memory

The shared memory requirement is shown below.

Definition unit	Variable elements	Size (bytes)
The area for storing command information	Fixed	1,000,000

Local Memory

The formulas for estimating local memory are shown below.

Definition unit	Variable elements	Size (bytes)
The area for storing search requests	The maximum number of requests that the conductor can receive simultaneously (*1)	192,000 x the maximum number of requests that the conductor can receive simultaneously
The area for storing connection information	The maximum number of requests that the conductor can receive simultaneously (*1)	1,536 x the maximum number of requests that the conductor can receive simultaneously
The area for storing hit results	Average record size Maximum number of responses to the application (*2) The maximum number of requests that the conductor can receive simultaneously (*1)	(32 + average record size) x the maximum number of responses to the application x the maximum number of requests that the conductor can receive simultaneously
The area for storing director information	The number of directors registered with the conductor (*3)	800 x 1,024 x the number of directors registered with the conductor
The area for storing sorter information	The number of sorters registered with the conductor (*4)	400 x 1,024 x the number of sorters registered with the conductor

*1) This is specified in the MaxConnection parameter in the conductor environment file.

*2) This is specified in the AnsMax parameter in the conductor environment file.

*3) This is specified in the Director parameter in the system environment file.

*4) This is specified in the Sorter parameter in the system environment file.

Example Calculation

An example calculation for local memory is shown below.

If the variable elements are as follows:

• The maximum number of requests that the conductor can receive simultaneously: 1,000
• Average record size: 4,000 (bytes)
• Maximum number of responses to the application: 100
• The number of directors registered with the conductor: 1
• The number of sorters registered with the conductor: 1

The Area for Storing Search Requests

192,000 x 1,000 = 192,000,000 bytes (approx. 200 MB)

The Area for Storing Connection Information

1,536 x 1,000 = 1,536,000 bytes (approx. 1.5 MB)

The Area for Storing Hit Results

(32 + 4,000) x 100 x 1,000 = 403,200,000 bytes (approx. 400 MB)

The Area for Storing Director Information

800 x 1,024 x 1 = 819,200 bytes (approx. 800 KB)

The Area for Storing Sorter Information

400 x 1,024 x 1 = 409,600 bytes (approx. 400 KB)