Buffers

Buffers represents different values depending on the specified access methods and buffering methods.

  • For non-hiperspace buffers that QSAM, IAM, IAMLOAD, or VSAM access methods manage, Buffers indicates the number of buffers assigned to the data set.

  • When LSR buffering is in effect, Buffers is the number assigned to the LSR subpool, not to the individual data set.

  • For IAM data sets, Buffers is the highest buffer number assigned to the data set that Strobe saw during measurement. This value is because IAM dynamically manages buffers.

  • For data sets processed by the BatchPipes subsystem, Buffers represents the number of records the pipe is capable of holding (the pipe depth).

Buffers does not show a value for applications that manage their own buffers, such as CICS temporary storage management, any of the Basic Access Methods (BDAM, BPAM, and BSAM), and the Overflow Sequestion Access Method (OSAM).

Note: Normally, QSAM and IAM access methods manage buffers efficiently. VSAM, however, often requires additional considerations in buffer allocation.

More about the Data Set Characteristics report