Hi all,
I want to count the total read inode from disk.
I count the call number of xfs_dinoe_from_disk.
But at the same time, I use blktrace to trace all read-meta operation. And using xfs_db to analysis the read-operation. I found more meta-read are read inode.
But the count of systemtap is zero.
The script of systemtap
#! /usr/bin/env stap
global count
function report()
{
printf("total count %u\n", count)
}
probe module("xfs").function("xfs_dinode_from_disk")
{
count++
}
probe end
{
report()
}
probe begin
{
printf("starting probe\n")
count = 0
}
Who know why? And How to do which can achieve my aim.
Thanks!
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