The RDDEVICE menu item creates the "I/O Analysis Detail by Device" report. The report lists the number of I/Os for each device on the selected node. The report detail includes the device name, rate (number of I/Os per second), total I/Os, read percentage, file organization, record size, bucket size and file size.

The "I/O Analysis Detail by Device" report appears as follows:

Example C-10 RDDEVICE - I/O Analysis Detail by Device Report

September 1, 1995 DLB Plus Page 1 DLB PLUS I/O Analysis by Device Name (Detail) Consolidation ALL consolidated on Sept 1, 1995 at 03:15 PM by SMITH All nodes File Rec Bkt File Device Name Rate I/Os Read % Org Size Size Size -------------------- ---- ------- ------ ---- ----- ---- ------- _$MINI$DUB3 FP.COM 4.00 1 100.00 SEQ 62 0 3 SALES_LOG.DAT .04 642 45.33 IND 100 6 2364 SALES_MASTER.DAT .01 2482 95.73 IND 1508 10 16581 DICTIONARY.DAT .00 812 100.00 IND 50 3 5250 ======= ====== Device Totals: 3357 83.80 _$MINI$DUB5 FORMS_LOG.DAT 1.00 4 100.00 IND 200 6 1902 INTOUCH.EXE .00 85 100.00 SEQ 512 0 1032 ACTION.DAT .00 2 100.00 IND 80 6 114 DICTIONARY.DAT .00 2 100.00 IND 50 3 5250 ======= ====== Device Totals: 93 100.00 ======= ====== Grand Totals: 3450 89.41

C.2.4 Analysis Detail by PID Report

The "I/O Analysis Detail by PID" report appears as follows:

Example C-11 RDPID - I/O Analysis Detail by PID Report

September 1, 1995 DLB Plus Page 1 DLB PLUS I/O Analysis by User, PID, and Image (Detail) Consolidation ALL consolidated on Sept 1, 1995 at 03:15 PM by SMITH All nodes User Image File Rec Bkt File Name Node PID Name Rate I/Os Read % Org Size Size Size ----- ---- -------- ----- ---- ---- ------ ---- ---- ---- ---- SMITH MINI 20400052 INT SALES_MASTER.DAT 4.00 136 100.00 IND 1508 10 6581 TTI0001.TMP 1.00 114 100.00 SEQ 0 0 7854 SALES_DETAIL.DAT .50 551 98.19 IND 350 6 6858 SALES_LOG.DAT .19 23 47.83 IND 100 6 2364 ==== ====== PID Totals: 824 84.55 SMITH MINI 20400B58 TPU CLIENT.DAT 2.11 7 100.00 IND 350 2 1212 INTOUCH.EXE .02 89 100.00 SEQ 512 0 1032 ==== ====== PID Totals: 96 100.00 ==== ====== User Totals: 920 92.77 . . . ==== ====== Grand Totals: 9262 86.01

C.2.5 Analysis Detail by File

The "I/O Analysis by File" report appears as follows:

Example C-12 RDFILE - I/O Analysis By File Report

September 1, 1995 DLB Plus Page 1 DLB PLUS I/O Analysis by File (Detail) Consolidation ALL consolidated on Sept 1, 1995 at 03:15 PM by SMITH All nodes User Image File Rec Bkt File File Name Name PID Name Org Size Size Size Rate I/Os Read % --------- ---- --- ---- ---- ---- ---- ---- ---- ---- ------ _$1$DUB3: IND 6948 6 350 SALES_DETAIL.DAT TTI DEB 20200A62 9.30 8030 100.00 SALES TTI ED 20200096 1.00 8 100.00 ARSYS MINI JOE 20600050 3.21 685 84.00 SALES TTI SUE 20200BAE .43 29 72.00 SALES TTI TOM 20200846 .21 887 94.00 SALES ==== ==== ====== File Totals: 9639 94.00 . . . ===== ====== Grand Totals: 88639 96.00

C.3 Graphs

The "I/O Analysis Summary by User" report appears as follows:

Example C-13 GUSER - I/O Analysis Summary by User Report

September 1, 1995 DLB Plus Page 1 DLB PLUS I/O Analysis by User Name (Summary) Consolidation ALL consolidated on Sept 1, 1995 at 03:15 PM by SMITH All nodes JOE TTI - Total I/Os: 134 |XXXXXXXXXXXXX - Read I/Os: 127 |############ - Write I/Os: 7 | |---------|---------|---------| 0 100 200 300 JOHN TTI - Total I/Os: 5,363 |XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX - Read I/Os: 5,363 |############################## - Write I/Os: 0 | |---------|---------|---------| 0 1000 2000 3000 SUE TTI - Total I/Os: 544 |XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX - Read I/Os: 468 |############################## - Write I/Os: 76 |******* |---------|---------|---------| 0 100 200 300

C.3.2 Graph Analysis Summary by Image

The "I/O Analysis Summary by Image" report appears as follows:

Example C-14 GIMAGE - I/O Analysis Summary by Image Report

September 1, 1995 DLB Plus Page 1 DLB PLUS I/O Analysis by Image Name (Summary) Consolidation ALL consolidated on Sept 1, 1995 at 03:15 PM by SMITH All nodes CONFIGURE TTI - Total I/Os: 10 |XXXXXXXXXXXXXXXXXXX - Read I/Os: 10 |################### - Write I/Os: 0 | |---------|---------|-- 0 5 10 INTOUCH (R) TTI - Total I/Os: 5,361 |XXXXXXXXXXXXXXXXXXXXXX - Read I/Os: 5,361 |###################### - Write I/Os: 0 | |---------|---------|-- 0 1000 2000 MAIL TTI - Total I/Os: 11 |XXXXXXXXXXXXXXXXXXXXX - Read I/Os: 11 |##################### - Write I/Os: 0 | |---------|---------|-- 0 5 10

C.3.3 Rate Analysis Summary by User

The "I/O Rate Analysis Summary by Username" report appears as follows:

Example C-15 GRUSER - I/O Rate Analysis Summary by Username Report

September 1, 1995 DLB Plus Page 1 DLB PLUS I/O Rate Analysis by Username (Summary) Consolidation ALL consolidated on Sept 1, 1995 at 03:15 PM by SMITH All nodes JOE TTI - I/O Rate: .11 |XXXXXXXXXXX - Read Rate: .00 | - Write Rate: .11 |*********** |---------|---------|---------|- 0 .1 .2 .3 JOHN TTI - I/O Rate: 3.29 |XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX - Read Rate: 3.29 |############################### - Write Rate: .00 | |---------|---------|---------|- 0 1 2 3 SUE (L) TTI - I/O Rate: .09 |XXXXXXXXX - Read Rate: .09 |######### - Write Rate: .00 | |---------|---------|---------|- 0 .1 .2 .3

C.3.4 Rate Analysis Summary by Image Name

The "I/O Rate Analysis Summary by Image Name" graph appears as follows:

Example C-16 GRIMAGE - I/O Rate Analysis Summary by Image Name Graph

September 1, 1995 DLB Plus Page 1 DLB PLUS I/O Rate Analysis by Image Name (Summary) Consolidation ALL consolidated on Sept 1, 1995 at 03:15 PM by SMITH All nodes --VMS-- TTI - I/O Rate: 4.10 |XXXXXXXXXXXXXXXXXXXXXXXXXX - Read Rate: 3.70 |########################## - Write Rate: .40 |**** |---------|---------|------ 0 1 2 INTOUCH TTI - I/O Rate: .46 |XXXXXXXXXXXXXXXXXXXXXXXXXX - Read Rate: .30 |########################## - Write Rate: .16 |**************** |---------|---------|------ 0 .1 .2 MAIL TTI - I/O Rate: 3.29 |XXXXXXXXXXXXXXXXXXXXXXXXXX - Read Rate: 3.29 |########################## - Write Rate: .00 | |---------|---------|------ 0 1 2

The DLB Plus AUTOSAMPLE procedure submits a batch process that samples the node at an interval you specify, until the sample finishes (after "ending time"). Optionally, DLB Plus Summary Reports are generated and printed after the last sample is taken.

The summary reports generated by the DLB Plus AUTOSAMPLE Procedure are:

	RSDEVICE	Analysis by Device Report
	RSFRAG	File Fragmentation Analysis
	RSCACHE	Files for Data Buffer or Data Caching Report
	RSHOT	Hot File Analysis Report

(For an explanation of these reports, please see Appendix C, DLB Plus Analysis Reports and Graphs.)

D.1.1 Starting the AUTOSAMPLE Procedure

When the AUTO item is selected, you are asked the following questions:

• Sample ending date (MMDDYYYY)<today's date>:
  • Enter the date you want the AUTOSAMPLE to end in MMDDYYYY format.
• Sample ending time (HH:MM)<18:00>:
  • Enter the time you want the AUTOSAMPLE to end (in military time; e.g., 18:00 is entered for 6:00 p.m.).
• Wait time between samples (HH:MM)<01:00>:
  • Enter the length of time you want the AUTOSAMPLE Procedure to wait between samples. This should be at least fifteen minutes (entered as 0:15) to prevent excessive CPU and memory use.
• Batch queue for DLB Plus sampling <sys$batch>:
  • Enter the batch queue that you want the AUTOSAMPLE Procedure to run in (e.g., sys$batch).
• Generate reports:
  • Enter "y" to generate and print summary reports after the last sample is taken.
• Print queue for DLB Plus reports <sys$print>:
  • Enter the name of the print queue that you want the AUTOSAMPLE reports to queue to (if reports are to be created). If the printer is not a 132-column printer, you must add /FORM = format to the printer name where "format" is the command to have your printer handle the 132 printout.

Next, DLB Plus responds with the following statements. You see your replies entered in place of the defaults:

Example D-1 DLB Plus AUTOSAMPLE

DLB Plus Dynamic Load Balancer PLUS 01-Sep-1995 DLB Plus Autosample This procedure will submit a batch process. The batch process will sample the node you are running on at the specified interval. Optionally, after the last sample, the DLB Plus summary reports will be generated and printed on the specified printer device. Sample end date : 01-Sep-1995 Sample end time : 18:00 Sample interval : 01:00 Batch queue : SYS$BATCH Generate reports: YES +Proceed-+ Print queue : SYS$PRINT | No | | Yes | +--------+ Select Yes or No to Proceed EXIT = Exit \ = Back HELP = Help

To start the AUTOSAMPLE Procedure at the current time using these parameters, select "Yes" to proceed.

Next, you see the message:

Submitting batch command file...

DLB Plus Autosample started

This means that the AUTOSAMPLE Procedure is being submitted to the batch queue you specified.

You can use the DCL command SHOW QUEUE batch-queue/ALL to verify that the batch is executing. If the batch is "Pending", it is waiting for an executing job to finish so that the batch can start. If a free slot is not expected soon, you may want to increase the batch queue job limit. Or, you may want to use a different batch queue so that your sample runs during the desired period of time.

If you want to use a different queue, you should first abort the existing sample. To abort a batch entry, use the DCL command:

DELETE/ENTRY=entry number

The entry number is displayed by the SHOW QUEUE command above.

The DCL command SET QUEUE/JOB_limit=n SYS$BATCH (n = new limit) modifies the job limit for SYS$BATCH.