TPDC Manual (G06.24+)

Using the SPAM Performance Data Charts and
Reports
Tandem Performance Data Collector (TPDC) Manual—526357-001
5-25
Disc File ‘Requests Blocked’ Shares (REQBLKD)
Disc File ‘Requests Blocked’ Shares (REQBLKD)
This 74-column chart shows which disk files are experiencing the most requests
blocked. It is ordered by descending requests blocked (summed over all opens of any
given file or partition), so only the files experiencing requests blocked are shown. The
chart displays:
•
File name
•
Number of requests blocked
•
Individual share of total requests blocked and a graph of this share
•
Cumulative share of total requests blocked. This chart uses the GLOBINFO and
DOPENSUM entities.
Parameters used are:
•
LID—specifies the Measure Load ID
•
EXCLUDE—specifies a value under which to exclude the number of requests per
second
•
SECTION—specifies the report section number
The chart is sorted in descending order of total requests blocked.
Disc File System I/O Shares (DFSIOS)
This 74-column chart provides an overview of disk file system I/O count distribution. It
is ordered by descending total driver calls (summed over all opens of any given logical
disk file or partition), so the files for which applications cause the most system I/Os are
at the top of the list. The chart displays:
•
File name
•
System I/Os per second
•
Flags for nonzero requests blocked, block splits, and remote I/Os
Disc File 'Requests Blocked' Shares for System \WMC (Release C30)
-----------------------------------
[Ttl = 5127 RBlkd ( 1.420/Sec)]
Total <----Shr% = %-age of Total----> Cum.
$Volume .Subvol .Filename RBlkd Shr% 0 5 10 15 20 25 30 Shr%
-------------------------- ----- ==== +----+----+----+----+----+----+ ----
$DATA14 .QQPSCLFX.FX930222 3718 72.5 |*****************************> 72.5
$DATA15 .QQPSDLR .DL930222 694 13.5 |************** | 86.0
$DATA16 .QQPSCLVR.VR930222 691 13.5 |************* | 99.5
+----+----+----+----+----+----+
0 5 10 15 20 25 30