On 11/26/10 5:47 AM, Bruno Galindro da Costa wrote:
Hi,
Why the first execution of "iostat -c" always displays the same values?
Reading the man pages os iostat, I could not understand these lines:
/"The first report generated by the iostat command provides
statistics concerning the time since the system was booted. Each
subsequent report covers the time since the previous report."
"The first report contains statistics for the time since system
startup (boot). Each subsequent report contains statistics collected
during the interval since the previous report."/
*Why it can´t build a report with the current usage values at the
first execution?*
Because that is the way it was designed. Most statistics programs
record what has happened either since the last time they were run or
from system start. Analysts wanted it that way. Maybe you can ask the
folks that designed the program to do startup 'snapshots' by entering a
numeric value. That should not be so hard, but this will alter the
programs functioning from what it used to be.
James McKenzie