Getting good quality I/O throughput data

This post expands on one I made last year here about sampling frequency (of I/O throughput, but it’s a generic concept). The background to this …

Comparing methods for recording I/O - V$SYSSTAT vs HP Measureware

I wrote last year about Graphing I/O data using gnuplot and Oracle V$SYSSTAT, using a script from Kevin Closson in his article How To Produce Raw, …

Graphing I/O data using gnuplot and Oracle V$SYSSTAT

Continuing in the beard-scratching theme of Unix related posts (previously - awk), here’s a way to graph out the I/O profile of your Oracle …

The danger of averages - Measuring I/O throughput

This query, based on AWR snapshots on sys.wrh$_sysstat, includes in its metrics the I/O read throughput for a given snapshot duration. However …