Siemens U3585-J-Z125-8-76 1 manual Monitored data on file access for selected files, File

SM2 monitoring programs FILE

FILE

Monitored data on file access for selected files

This monitoring program provides information on the number and average duration of file access, provided that access was by way of the I/O output system of privileged PAM (PPAM). This includes file access using the methods EAM (Evanescent Access Method) and ISAM (Indexed Sequential Access Method).

In addition, data is recorded for the access methods SAM (Sequential Access Method) and UPAM (User Primary Access Method), all disk access, and all access to magnetic tape files with standard blocks.

The FILE statistics also contain the access times for files. The monitored time covers the logical duration of I/O operations between start and end of a job from the point of view of the software. For asynchronous I/O operations, this time can be considerably greater than the hardware time.

In the case of multiprocessor systems, monitoring is restricted to I/O operations originating in the local system running SM2.

HSMS

Monitored data on file migration

This monitoring program supplies information on the migration of files to the background level and the retrieval of files to the processing level.

GS

Monitored data on access to global storage

This monitoring program provides information on read and write access to global storage (GS), categorized by partitions.

GSVOL

Monitored data on volumes in global storage

This monitoring program provides information on read and write access to volumes which are emulated on global storage.

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