Comment 1 for bug 698797

1.
I think we should not use any additional mutex for "show status".
Some of the values needs mutex to calculate.

2.
The suggestion seems to skip useful values and including most of not-so-useful values.
Why do you choose the values? Is it worth to make slower the "show status" command?
I cannot accept such baseless suggestions.
You should understand expense of the getting values.

e.g.
Pending reads 0
Pending writes: LRU 0, flush list 129, single page 0
These are the values we should look at first to judge whether the problem is IO bound or not.