How do I view statistical data for VTAM's Enterprise Extender-specific buffer pools?

VTAM has three Enterprise Extender-specific buffer pools:

• TIBUF (also known as TI00)

• T1BUF (also known as T100)

• T2BUF (also known as T200)

TIBUF is used to perform input/output operations for CSM-capable protocols. This pool is in 31-bit storage.

T1BUF buffers are similar to TIBUF buffers but larger. T1BUF buffers are used as packing buffers by HiperSockets accelerator and QDIO. T1BUF buffers are also used to contain the HPR headers and the media, IP, and UDP headers for an Enterprise Extender connection.

T2BUF buffers are similar to T1BUF buffers but larger. T2BUFs are used exclusively for HiperSockets accelerator and QDIO when the T1BUF buffer is perceived to be of insufficient size to pack all the headers and data. T2BUF buffers are also used by HPR for all retransmissions over HiperSockets and QDIO.

To display statistics for those three pools, enter the command d net,bfruse,buf=(ti,t1,t2).

The types of statistics displayed are:

• BUFF SIZE: the number of bytes in each buffer

• EXP INCREMENT: the number of buffers to be added to the pool during dynamic expansion

• TIMES EXP: the number of times the pool has been expanded since the last buffer pool trace record was written

• EXP/CONT THRESH: a value indicating when to trigger expansion / a value indicating when to trigger contraction

• CURR TOTAL: the total number of buffers in the pool

• CURR AVAILABLE: the available buffers in the pool that are not in use

• MAX TOTAL: the maximum number of buffers contained in the pool at any one time since the last buffer pool trace record was written

• MAX USED: the maximum number of buffers that have been in use at one time since the last buffer pool trace record was written

An example of output from that command is shown below:

  IST097I DISPLAY ACCEPTED
  IST350I DISPLAY TYPE = BUFFER POOL DATA
  IST920I TI00     BUFF SIZE  632         EXP INCREMENT   60
  IST921I          TIMES EXP  0           EXP/CONT THRESH 120   / *NA*
  IST922I          CURR TOTAL 360         CURR AVAILABLE  85
  IST923I          MAX TOTAL  360         MAX USED        302
  IST924I -------------------------------------------------------------
  IST920I T100     BUFF SIZE  1004        EXP INCREMENT   32
  IST921I          TIMES EXP  3           EXP/CONT THRESH 15    / 111
  IST922I          CURR TOTAL 112         CURR AVAILABLE  112
  IST923I          MAX TOTAL  112         MAX USED        69
  IST924I -------------------------------------------------------------
  IST920I T200     BUFF SIZE  2028        EXP INCREMENT   32
  IST921I          TIMES EXP 406920       EXP/CONT THRESH 7     / 103
  IST922I          CURR TOTAL 104         CURR AVAILABLE  104
  IST923I          MAX TOTAL  1608        MAX USED        1576
  IST314I  END