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<h1 class="topictitle1">Component Report - Input/Output Processor (IOP) Utilizations</h1>
<div><p>The Input/Output Processor (IOP) Utilizations section of the Component
report shows the input/output processor (IOP) utilization for communications,
direct access storage devices (DASDs), multifunction (DASD, communication,
and local work stations). Consistent utilization, at or above the threshold
value of the DASD IOP and multifunction IOP, will affect system performance
and cause longer response times or less throughput. </p>
<p>See the utilization guidelines and thresholds in the Performance
Tools book for a list of threshold values.</p>
<div class="example"><h4 class="sectiontitle">Example</h4><div class="note"><span class="notetitle">Note:</span> The total for the I/O processor utilization
often times does not match the sum of the three columns (IOP Processor Util
Comm, IOP Processor Util LWSC, and IOP Processor Util DASD). This mismatch
is caused by the utilization of other small components, such as system time.</div>
<pre> Component Report 10/02/03 17:12:15
IOP Utilizations Page 345
Perf data from 14:00 to 16:00 at 1 min
Member . . . : Q275140000 Model/Serial . : 890/10-3907F
Main storage . . : 56.4 GB Started . . . . : 10/02/03 14:00:00
Library . . : PTLIBV5R3 System name . . : ABSYSTEM
Version/Release : 5/ 3.0 Stopped . . . . : 10/02/03 16:00:00
Partition ID : 003 Feature Code . :7427-2498-7427
Int Threshold . : .00 %
Virtual Processors: 4 Processor Units : 4.0
--- IOP Processor Util --- DASD -- KBytes Transmitted -- Available
IOP Total Comm LWSC DASD Ops/Sec IOP System Storage Util 2
-------------------- ----- ----- ----- ----- ----------- ----------- ----------- ----------- ------
CMB05 (2843) .4 .0 .0 .0 54 0 65,038,208 .0
CMB06 (2843) .0 .0 .0 .0 72 0 63,717,218 .0
CMB07 (2843) .5 .2 .0 .1 488 0 53,520,379 .0
CMB08 (2843) 3.2 .0 .0 1.9 1,314 0 61,607,496 .0
CMB09 (2843) .3 .0 .0 .1 249 0 61,645,950 .0
CMB10 (2843) .3 .2 .0 .0 6,885 256 55,139,610 .0
CMB11 (2843) 1.9 1.6 .0 .0 147,424 0 53,390,615 .0
IOP -- Resource name and model number for each communications, DASD,
multifunction, and local work station IOP
IOP Processor Util Total -- Total utilization for IOP
IOP Processor Util Comm -- Utilization of IOP due to communications activity
IOP Processor Util LWSC -- Utilization of IOP due to local work station activity
IOP Processor Util DASD -- Utilization of IOP due to DASD activity
DASD Ops/Sec -- Disk operations per second
KBytes Transmitted IOP -- Total Kbytes transmitted from an IOP to the system across the bus
KBytes Transmitted System -- Total Kbytes transmitted to the IOP from the system across the bus
Available Storage -- The average number of bytes of free local storage in the IOP
Util 2 -- Utilization of co-processor</pre>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahxreportperftools.htm" title="Performance Tools reports provide information on data that has been collected over time. Use these reports to get additional information about the performance and use of system resources.">Performance Tools reports</a></div>
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<div class="relinfo"><strong>Related information</strong><br />
<div><a href="../books/sc415340.pdf" target="_blank">Performance Tools PDF</a></div>
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