Collect, report, or save system activity information.
# sar -h
Usage: sar [ options ] [ <interval> [ <count> ] ]
Main options and reports:
-b I/O and transfer rate statistics
-B Paging statistics
-q Queue length and load average statistics
-r Memory utilization statistics
-R Memory statistics
-S Swap space utilization statistics
-W Swapping statistics
#man sar
-h Display a short help message then exit.
-B Report paging statistics.
-b Report I/O and transfer rate statistics.
-r Report memory utilization statistics.
-q Report queue length and load averages.
-n { keyword [,...] | ALL }
Report network statistics.
-W Report swapping statistics.
-f [ filename ]
Extract records from filename
-s [ hh:mm:ss ]
Set the starting time of the data,
-e [ hh:mm:ss ]
Set the ending time of the report.
# sar 00:00:01 CPU %user %nice %system %iowait %steal %idle 00:10:01 all 0.03 0.00 0.16 0.02 0.00 99.79 Average: all 0.03 0.00 0.16 0.02 0.00 99.79
# sar -P ALL 12:50:01 CPU %user %nice %system %iowait %steal %idle 13:00:01 all 0.06 0.00 0.16 1.85 0.00 97.92 13:00:01 0 0.18 0.00 0.23 3.68 0.00 95.92 13:00:01 1 0.03 0.00 0.12 3.72 0.00 96.13 13:00:01 2 0.01 0.00 0.24 0.01 0.00 99.74 13:00:01 3 0.02 0.00 0.07 0.00 0.00 99.91
-r Report memory and swap space utilization statistics.
#sar -r 00:00:01 kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree kbswpused %swpused kbswpcad 00:10:01 102260 408284 79.97 22896 311620 514072 0 0.00 0 Average: 102260 408284 79.97 22896 311620 514072 0 0.00 0
-q Report queue length and load averages.
#sar -q 00:00:01 runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 00:10:01 1 87 0.00 0.01 0.00 Average: 1 87 0.00 0.01 0.00
#sar -n DEV 00:00:01 IFACE rxpck/s txpck/s rxbyt/s txbyt/s rxcmp/s txcmp/s rxmcst/s 00:10:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:10:01 eth0 0.48 0.35 53.09 114.18 0.00 0.00 0.00 00:10:01 sit0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 0.48 0.35 53.09 114.18 0.00 0.00 0.00 Average: sit0 0.00 0.00 0.00 0.00 0.00 0.00 0.00
-b Report I/O and transfer rate statistics.
#sar -b 00:00:01 tps rtps wtps bread/s bwrtn/s 00:10:01 1.23 0.01 1.22 0.12 16.45 Average: 1.23 0.01 1.22 0.12 16.45
-B Report paging statistics.
#sar -B 00:00:01 pgpgin/s pgpgout/s fault/s majflt/s 00:10:01 0.02 2.73 37.11 0.00 Average: 0.02 2.73 37.11 0.00
-W Report swapping statistics. The following values are displayed:
#sar -W 00:00:01 pswpin/s pswpout/s 00:10:01 0.00 0.00 Average: 0.00 0.00
sar -f /var/log/sa/sa16 <- The 16th
sar -s hh:mm:ss -e hh:mm:ss Example sar -s 16:20:00 -e 16:50:00
http://ksar.atomique.net/index.html
LANG=C sar -A -f /var/log/sasa04 > sa04.txt