Performance: The "Not a Problem" Problem

I have just found amazing discuss between Jim Mauro, Brendan Gregg, and Roch Bourbonnais. I love it because my feeling are exactly the same and for a few last years I have been struggling with "users" who reports e.g. high CPU usage as a problem. Now I hope after watching this video some of them may see the light ... ;-)

Sunsolve: A deeper look into vmstat statistics using DTrace and mdb

There is an excellent document released two days ago at Sunsolve:
A deeper look into vmstat statistics using DTrace and mdb
The document describes how to drill down into vmstat statistics using DTrace and mdb. There are so many fantastic DTrace and mdb commands that it is really worth looking (like any other DTrace documentation ;-) )
I like especially the mdb command to see swapped out processes:

mdb -k << EOF
::walk thread myvar|::print  kthread_t t_schedflag|::grep .==0|::eval p_user.u_comm
EOF

Excellent document !

One should also note that there is (for a long time) similar document: "Using DTrace to understand mpstat and vmstat output"

PS. What a pity that this page is only for customers with Sunsolve account. Is should be available for everyone, especially for Linux advocates ;-)