Notes sysstat sar

Voir :

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

Voir aussi :

notes atop

nmon

Install

apt-get update apt-get install sysstat
ENABLED="true"

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

Utilisation

$ 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

Autres

Réseaux

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

Disques

iostat -p -x

Configuration

Timer

# systemctl edit --full sysstat-collect.timer systemctl cat 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
[Unit] Description=Run system activity accounting tool every 5 minutes [Timer] OnCalendar= OnCalendar=*:5/5

Pb

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