Detailed Analysis of a Hardware Bottleneck

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本文介绍了如何通过SAP系统的监控工具ST06来诊断CPU和内存等硬件资源的瓶颈问题，并提供了详细的步骤来定位导致高负载的具体进程，包括SAP工作进程、数据库进程和外部进程。

Performance problems may be indicated if:

-> The average idle CPU capacity is less than 20% every hour.

-> More than 20% of the physical main memory is paged every hour.

-> Utilization of individual hard disks is more than 50%.

Detailed Analysis of a (CPU) Hardware Bottleneck

Operating System Monitor (Transaction Code ST06)
High CPU Load (CPU Idle Average < 35%)?
CPU Capacity Free on Other Computers in the System?
Redistribute SAP Work Processes and Users!

Operating System Monitor (Transaction Code ST06): Top CPU Processes
SAP Work Processes Causing High CPU Load?
Work Process Overview (Transaction Code SM50 or SM66)
Detailed Analysis of ABAP Program (using ABAP Trace SE30).
Database Processes Causing High CPU Load?
Database Process Monitor (Transaction ST04, e.g., DB2 Applications)
Detailed Analysis of Expensive SQL Statements.
External Processes Causing High CPU Load?
Terminate, Optimize, or Postpone External Process!

Detailed Analysis of a (Main Memory) Hardware Bottleneck

Operating System Monitor (Transaction Code ST06)

High Paging Rate (Paging per Hour > 20% of RAM)?

Free Memory on Other Computers in the System?

Redistribute SAP Work Processes and Users.

File System Cache > 10% of RAM?

Reduce File System Cache.

SAP Memory Configuration Monitor (Transaction Code ST02): Mode List

Individual Users Consuming Much Memory?

Detailed Analysis of User Actions.