Introduction to Sysstat
The Sysstat package contains
utilities to monitor system performance and usage activity.
Sysstat contains the sar utility, common to many
commercial Unixes, and tools you can schedule via cron to collect
and historize performance and activity data.
This package is known to build and work properly using an LFS
This package is known to build properly using the gcc-6 compiler.
There are no build-time requirements for this package; however, it
is designed to be controlled by a cron daemon such as Fcron-3.2.0.
User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/sysstat
Installation of Sysstat
Install Sysstat by running the
./configure --prefix=/usr \
This package does not come with a test suite.
Now, as the
Install the systemd unit by running the following command as the
install -v -m644 sysstat.service /lib/systemd/system/sysstat.service
sa_lib_dir: This environment variable
specifies the location of the package-specific library directory.
sa_dir: This environment variable
specifies the location of the directory containing the data files.
conf_dir: This environment variable
specifies the location of the system configuration directory.
--disable-file-attr: Do not
set attributes on files being installed. This parameter causes the
installation to ignore the man group variable resulting in the man
--help to see other influential environment
variables you can pass to configure. You may want to use
compressafter variables to customize the amount of
data files kept on the system.
To begin gathering Sysstat
history information, you must add to, or create a privileged
user's crontab. The history data location is
/var/log/sa. The user running Sysstat utilities via cron must have write
access to this location.
Below is an example of what to install in the crontab. Adjust the
parameters to suit your needs. Use man sa1 and man sa2 for information about
# 8am-7pm activity reports every 10 minutes during weekdays
0 8-18 * * 1-5 /usr/lib/sa/sa1 600 6 &
# 7pm-8am activity reports every hour during weekdays
0 19-7 * * 1-5 /usr/lib/sa/sa1 &
# Activity reports every hour on Saturday and Sunday
0 * * * 0,6 /usr/lib/sa/sa1 &
# Daily summary prepared at 19:05
5 19 * * * /usr/lib/sa/sa2 -A &
Ensure you submit the revised crontab to the cron daemon.
At system startup, a LINUX RESTART message must be inserted in
the daily data file to reinitialize the kernel counters. This can
be automated by enabling the previously installed systemd unit by
running the following command as the
systemctl enable sysstat
cifsiostat, iostat, mpstat, pidstat,
sadf, sar, and tapestat
/usr/share/doc/sysstat-11.3.4 and /var/log/sa
displays statistics about read and write operations on
reports CPU statistics and input/output statistics for
devices and partitions.
writes activities for each available processor.
is used for monitoring individual tasks currently being
managed by the Linux kernel.
is used for displaying the contents of data files created
by the sar
command. But unlike sar, sadf can write its data
in many different formats.
is used for displaying the contents of elected cumulative
activity counters in the operating system.
is used for monitoring the activity of tape drives
connected to a system.
Last updated on 2016-05-21 17:58:10 -0500