---
title: "SMF 74-4 Storage Class Memory Data"
slug: "smf-74-4-storage-class-memory-data"
updated: 2024-02-28T16:42:05Z
published: 2024-02-28T16:42:05Z
canonical: "docs.zetaly.io/smf-74-4-storage-class-memory-data"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zetaly.io/llms.txt
> Use this file to discover all available pages before exploring further.

# SMF 74-4 Storage Class Memory Data

## Introduction

## Fields

Stored in cfnSmemData

| SMF Field | DB Column name | Description | Unit |
| --- | --- | --- | --- |
|  | recordType | Values is always XCSC |  |
| SMF74SID | sid | System identification (from the SID parameter) |  |
| SMF74GIE | startTime | Projected gathering interval end GMT time |  |
| SMF74TME | endTime | Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer |  |
| SMF74INT | seconds | Duration of the RMF measurement interval | second |
| SMF74MFV | rmfVersion | RMF Version number |  |
| SMF74PRD | productName | Product name (‘RMF’) |  |
| SMF74MVS | mvsLevel | MVS software level (ZVvvrrmm) |  |
| SMF74IML | processorType | Indicates the type of processor complex on which data measurements were taken |  |
| SMF74PRF | processorFlags | Processor flags (1, 2, 3, 4, 5, 6 or 7) |  |
|  | offset |  |  |
| SMF74SYN | synctime | SYNC value | second |
| SMF74XNM | sysplex | Sysplex name ( in the COUPLExx parmlib member) |  |
| SMF74SNM | sysname | System name (r in the IEASYSxx parmlib member) |  |
| R744MSMA | cfScmMaxStorcMem | Maximum amount of storage class memory the structure can use | 4 kilobyte |
| R744MIUA | cfScmAmountAugSpac | Amount of augmented space that is in use by this structure | 4 kilobyte |
| R744MIUS | cfScmAmountSclasMem | Amount of storage class memory that is in use by this structure | 4 kilobyte |
| R744MEMA | cfScmMaxSpaAug | Estimated maximum amount of space that may be assigned as augmented space for this structure | 4 kilobyte |
| R744MEML | cfScmEstMaxListEntrinSclasMem | Estimated maximum number of list entries that may reside in storage class memory for this structure |  |
| R744MEME | cfScmEstMaxListEleminSclasMem | Estimated maximum number of list elements that may reside in storage class memory for this structure |  |
| R744MENL | cfScmNumStrListEntrinSclasMem | Number of existing structure list entries that reside in storage class memory for this structure |  |
| R744MENE | cfScmNumStrListEleminSclasMem | Number of existing structure list elements that reside in storage class memory for this structure |  |
| R744MSWC | cfScmNumWriteListinSclasMem | SCM write count. The number of list write operations performed to storage class memory |  |
| R744MRFC | cfScmNumReadSclasMemRefList | The number of read operations against storage class memory that were initiated by a reference to list structure objects residing in storage class memory |  |
| R744MRPC | cfScmNumReadSclasMemPrefetch | The number of read operations against storage class memory that were initiated as a prefetch operation in order to retrieve list structure objects in storage class memory that are expected to be referenced |  |
| R744MAEC | cfScmAuxEnacmd | SCM auxiliary enabled command count. This is the number of commands that required the use of CF auxiliary frames |  |
|  | actionId |  |  |
| R744FNAME | lcfCFName | Name of coupling facility as defined in parmlib member COUPLExx |  |