
Chapter 9. Performance considerations for UNIX servers 337
DEV#: 1 DEVICE NAME: hdisk1
===============================
Total Read Total Write Active Read Active Write Maximum
I/O: 69227 49414 0 0 40
SECTOR: 1294593 1300373 0 0 1737
Transfer Size: <= 512 <= 4k <= 16K <= 64K > 64K
118 20702 80403 12173 5245
# pcmpath query adaptstats
Adapter #: 0
=============
Total Read Total Write Active Read Active Write Maximum
I/O: 88366 135054 0 0 258
SECTOR: 2495579 4184324 0 0 3897
We are interested in the Maximum field, which indicates the maximum number of I/Os
submitted to the device since system boot. The Maximum for devstats does not exceed
queue_depth ...