Played a one day who runs AWR reports, you can see the IO Profile section inside provides Read per Second is 848.2, the number of IO requests below:
But now the database disk sda, under the monitoring of zabbix, but found the read per second rate was not so much,
The read rate is defined as follows, for "r/s. The number (after merges) of The read requests completed per second for The device."
If under the zabbix to monitor the number of requests so little, because this number is after the merge, it is impossible to only so little?
And actual iostat tool in real time on the Linux system call per IO, also did not see there's so much read IO operations per second, and often is 0,
So I want to ask, where I have a wrong place?