Oracle® Solaris Studio 12.4: Performance Analyzer

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Updated: January 2015
 
 

I/O Tracing Data

I/O data collection traces input/output system calls including reads and writes. It measures the duration of the calls, tracks the files and descriptors, and the amount of data transferred. You can use the I/O metrics to identify the files, file handles, and call stacks that have high byte transfer volumes and total thread time.

Table 2-4  I/O Tracing Metrics
Metric
Definition
Read Bytes
The sum of the number of bytes read in each call to the read functions.
Write Bytes
The sum of the number of bytes written in each call to the write functions.
Read Count
Number of times read calls were made.
Write Count
Number of times write calls were made.
Other I/O Count
Number of times other IO calls were made
I/O Error Count
Number of errors made during IO calls
Read Time
Number of seconds spent reading data
Write Time
Number of seconds spent writing data
Other I/O Time
Number of seconds spent performing other IO calls
I/O Error Time
Number of seconds spent in IO errors