CHANNEL report

This report contains monitored data on the activity of I/O channels.

Report output

The REPORT CHANNEL statement is used to request the output of the CHANNEL report.

The report can be output only if the SM2 administrator has

• defined the channels to be monitored using the SET-CHANNEL-IO-PARAMETERS statement

• started the monitoring process using the statement START-MEASUREMENT-PROGRAM TYPE=*CHANNEL-IO.

The monitoring program is started for all channels when the SM2 subsystem is started.

Overflow screens may be requested for this report.

The channels are output sorted by the total number of input/output of PAM block transfer, byte transfer and input/output without data transfer.

 HOST0001 SM2 CHANNEL (I)     CYCLE:   60 S  SAMPLES:   120     <date>    <time>

  PATH |  TYPE  |        PAM        |       BYTES       | NODATA
   ID  |        | (IO/S)  | (KB/S)  | (IO/S)  | (KB/S)  | (IO/S)
  -----+--------+---------+---------+---------+---------+---------
   04C | TYP FC |     0.0 |     0.0 |  1667.9 |   660.9 |     0.0
   070 | TYP FC |   161.7 |  1951.4 |     0.0 |     0.0 |     0.8
   050 | TYP FC |   161.5 |  1906.3 |     0.0 |     0.0 |     0.5
   028 | TYP FC |   113.8 |  1772.9 |     0.0 |     0.0 |     0.4
   030 | TYP FC |   113.6 |  1761.1 |     0.0 |     0.0 |     0.4
   068 | TYP FC |    47.6 |   156.2 |     0.0 |     0.0 |     0.0
   048 | TYP FC |    47.5 |   148.3 |     0.0 |     0.0 |     0.0
   06C | TYP FC |     0.0 |     0.0 |     0.0 |     0.0 |     0.3
   034 | TYP FC |     0.0 |     0.0 |     0.0 |     0.0 |     0.3

Monitoring information

PATH-ID	Channel address
TYPE	Channel type (BUS or TYP FC)
PAM	PAM block transfer (disk devices): Number of I/O operations or data volume in KB transferred per sec.
BYTES	Byte transfer (MBK): Number if I/O operations or data volume in KB transferred per second.
NODATA	Number of I/O operations without data transfer per second.

x86 servers

The FibreChannel periphery is operated under BS2000 by emulating the devices in X2000 as bus peripherals. The bus periphery is alsways specified as type BUS in SM2.

The real, physical FibreChannels can be different from the channels that are visible for the BS2000 operating system (and those displayed for SM2). Consequently the mesured dat supplied by SM2 is not meaningful with regard to the individual channel. Valid values can be obtained by forming sum values.

SM2 is not notified of device management commands (see the “Commands” manual [3 (Related publications)]). In the monitoring cycle in which the operator enters such commands, the data for the affected channels may be incorrect