Voir :

• https://www.linuxjournal.com/content/how-use-sar-system-activity-reporter

Voir aussi :

• notes atop
• nmon

apt-get update
apt-get install sysstat

/etc/default/sysstat

ENABLED="true"

# service sysstat restart
Starting the system activity data collector: sadc.

$ dpkg -L sysstat |grep 'bin/'
/usr/bin/nfsiostat
/usr/bin/pidstat
/usr/bin/sadf
/usr/bin/iostat
/usr/bin/mpstat
/usr/bin/sar.sysstat
/usr/bin/cifsiostat

Report CPU utilization

sar -u ALL

Report per-processor CPU utilization

sar -P ALL

Display all CPU utilization per 2 seconds 3 times

mpstat -P ALL 2 3
 
# mpstat -A 1

Report memory utilization

sar -r ALL

Report swap space utilization

sar -S

Report hugepages utilization

sar -H

Report paging statistics

sar -B

Report swapping statistics

sar -W

Report I/O and transfer rate statistics

sar -b

Report block device activity

sar -d

Report process creation and system switching activity

sar -w

Report queue length and load averages

sar -q

Display I/O disk with Mega bytes per 2 seconds

iostat -mx -d 2 

Report network utilization

sar -n ALL

Display I/O and network per 2 seconds 5 times

sar -b -n DEV 2 5

Display data in human readable way

sar -r -h

Display memory utilization of specific process per a second 3 times

pidstat -r -p 21090 1 3 

Charge sur une période donnée

sar -q -f /var/log/sa/sa27 -s 16:00:00 -e 17:00:00
sar -A -f /var/log/sa/sa27 -s 16:00:00 -e 17:00:00

Un peu de couleurs

env S_COLORS=always sar -A | less -R -S
env S_COLORS=always sar -n DEV | grep --color=never eth0

Voir aussi :

• dircolors

Réseaux

sar -n ALL
sar -n DEV
sar -n TCP
sar -n ETCP
sar -n IP
sar -n EIP

Disques

iostat -p -x

# systemctl edit --full sysstat-collect.timer
 
systemctl cat sysstat-collect.timer

/usr/lib/systemd/system/sysstat-collect.timer

# /usr/lib/systemd/system/sysstat-collect.timer
# (C) 2014 Tomasz Torcz <tomek@pipebreaker.pl>
#
# sysstat-11.7.3 systemd unit file:
#        Activates activity collector every 10 minutes
 
[Unit]
Description=Run system activity accounting tool every 10 minutes
 
[Timer]
OnCalendar=*:00/10
 
[Install]
WantedBy=sysstat.service

systemctl edit sysstat-collect.timer

/etc/systemd/system/sysstat-collect.timer.d/override.conf

[Unit]
Description=Run system activity accounting tool every 5 minutes
 
[Timer]
OnCalendar=
OnCalendar=*:5/5

# sar -n TCP
Requested activities not available in file /var/log/sa/sa31

/etc/sysconfig/sysstat

# Parameters for the system activity data collector (see sadc(8) manual page)
# which are used for the generation of log files.
# By default contains the `-S DISK' option responsible for generating disk
# statisitcs. Use `-S XALL' to collect all available statistics.
SADC_OPTIONS="-S XALL"

Important note: The activities (including optional ones) saved in an existing data file prevail over those selected with option -S. As a consequence, appending data to an existing data file will result in option -S being ignored.