Evaluate Performance in Detail › Performance Evaluation Report › Interpret SCS Statistics

Interpret SCS Statistics

If included in the Performance Evaluation Report, SCS statistics, follow the CPU mode statistics for each node in a cluster. This report also presents cluster-wide SCS statistics. The SCS statistics are not included in the default group of Performance Report options.

To enable the SCS statistics display from the Performance Evaluation Report, use the following qualifier:

/INCLUDE=SCS_STATISTICS  

The following statements are keyed to the columns in the SCS Statistics report:

1. Other nodes in cluster. The Performance Manager reports SCS message and transfer rate statistics as seen by node NODE2 to the other nodes listed here.
2. Port name if multiple paths are possible.
3. Physical circuit connecting all nodes on a common interconnect.
4. Datagram send rate per second.
5. Datagram receive rate per second.
6. Datagram discard rate per second.
7. Message send rate.
8. Message receive rate.
9. Block send rate.
10. Block request rate.
11. Kilobyte send rate.
12. Kilobyte receive rate.
13. Kilobyte map rate.
14. Send credit waits.
15. Buffered descriptor waits.

The following example shows the Performance Evaluation report, SCS Statistics:

Performance                     NODE02 (VAX-11/78)                      Page   9
Evaluation                                                          PA Vx.x
Wednesday 14-JAN-2006 00:00 to 23:59

  +------------------------------------------------------------------------+
  | The following table gives the SCS message and transfer rates from      |
  | this node to all other nodes in the cluster.  Values are rates (/sec). |
  +------------------------------------------------------------------------+

CLUSTR PATH CIR- DGS  DGS  DGS  MGS  MGS  BLKS  BLKS   KB    KB    KB     CRD  BDT
 NODE  PORT CUIT SND  RCD  DSD  SND  RCVD SEND  RQSTD  SEND  RCVD  MAPPED WAI  WAI
------ ---- ---- ---  ---  ---  ---  ---- ----- -----  ----  ----  ------ ---- ----
   1     2    3     4    5    6    7    8     9     10    11    12     13  14   15
DEFEND PAA0 CI-0    0    0    0    0    0     0     0     0     0       0 0.00 0.00
NODE3  PAA0 CI-0    0    0    0    2    1     0     0     0     0       0 0.00 0.00
AGRIC  PAA0 CI-0    0    0    0    3    3     0     0     0     0       5 0.00 0.00
SUPPLY PAA0 CI-0    0    0    0    4    2     0     0     0     0       0 0.00 0.00
Total  PAA0 CI-0    0    0    0    8    6     0     0     0     0       5 0.00 0.00
  .     .      .    .    .    .    .    .     .     .     .     .       .  .
  .     .      .    .    .    .    .    .     .     .     .     .       .  .
  .     .      .    .    .    .    .    .     .     .     .     .       .  .

Performance                          CLUSTER                            Page  12
Evaluation                                                          PA Vx.x
Wednesday 14-JAN-2006 00:00 to 23:59

  +------------------------------------------------------------------------+
  | The following table gives the SCS message and transfer rates to the    |
  | target node from other nodes in the cluster.  Values are rates (/sec). |
  +------------------------------------------------------------------------+

TARGET NODE: DEFEND
SOURCE PATH CIR- DGS  DGS  DGS  MGS  MGS  BLKS  BLKS   KB    KB    KB     CRD  BDT
 NODE  PORT CUIT SND  RCV  DSD  SND  RCVD SEND  RQSTD  SEND  RCVD  MAPPED WAI  WAI
------ ---- ---- ---  ---  ---  ---  ---- ----  -----  ----  ----  ------ ---- ----
NODE2  PAA0 CI-0   0    0    0    0     0    0      0     0     0       0 0.00 0.00
SUPPLY PAA0 CI-0   0    0    0    1     1    0      0     0     0       1 0.00 0.00
NODE3  PAA0 CI-0   0    0    0    0     0    0      0     0     0       0 0.00 0.00
Total  PAA0 CI-0   0    0    0    1     1    0      0     0     0       2 0.00 0.00
  .     .      .   .    .    .    .     .    .      .     .     .       .  .
  .     .      .   .    .    .    .     .    .      .     .     .       .  .
  .     .      .   .    .    .    .     .    .      .     .     .       .  .