February 2010
Intermediate to advanced
460 pages
16h 22m
English
book
z/OS Distributed File Service zSeries File System Implementation z/OS V1R11
by Paul Rogers, Robert Hering
Content preview from z/OS Distributed File Service zSeries File System Implementation z/OS V1R11
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Chapter 6. Performance and tuning 269
6.8 RMF zFS Summary Report
The zFS Summary Report shown in Figure 6-14 on page 270 displays the zFS activity and
capacity data for the following three areas:
Summary for overall zFS response time as request response time and wait times.
Cache activity for the following four cache types:
– User cache
– Vnode cache
– Metadata cache
– Transaction cache
Aggregate activity and capacity data. The aggregate name is a cursor-sensitive field that
shows the file systems statistics for the selected aggregate in the zFS activity report.
6.8.1 Report field descriptions
The important areas of the Response Summary Report are:
In the response time section, the I/O, lock, and sleep wait percentages are
workload-dependent ...
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