Sar

Performance measurement tool together with sa an acct

sar -b 10

Show the current IO statistics with 10 seconds interval

sar -b -f <location of sa-file>

Show the IO statistics from the sa-file. If the file is omitted the last file (today) will be used

sar -d

Statistics per block device

sar -u

CPU statistics

sar -r

Memory utilization

sar -B

Paging (swapping) activity

sar -S

Swap space utilization