<s>
System	O
Activity	O
Report	O
(	O
sar	B-Application
)	O
is	O
a	O
Unix	O
System	O
V-derived	O
system	B-Application
monitor	I-Application
command	O
used	O
to	O
report	O
on	O
various	O
system	O
loads	O
,	O
including	O
CPU	B-Device
activity	O
,	O
memory/paging	O
,	O
interrupts	O
,	O
device	O
load	O
,	O
network	O
and	O
swap	O
space	O
utilization	O
.	O
</s>
<s>
Sar	B-Application
uses	O
/proc	B-Application
filesystem	O
for	O
gathering	O
information	O
.	O
</s>
<s>
Sar	B-Application
was	O
originally	O
developed	O
for	O
the	O
Unix	B-Operating_System
System	I-Operating_System
V	I-Operating_System
operating	O
system	O
;	O
it	O
is	O
available	O
in	O
AIX	B-Application
,	O
HP-UX	B-Application
,	O
Solaris	B-Application
and	O
other	O
System	B-Operating_System
V	I-Operating_System
based	O
operating	O
systems	O
but	O
it	O
is	O
not	O
available	O
for	O
macOS	O
or	O
FreeBSD	O
.	O
</s>
<s>
Most	O
Linux	B-Application
distributions	O
provide	O
sar	B-Application
utility	O
through	O
the	O
sysstat	B-Application
package	O
.	O
</s>
<s>
filename	O
Uses	O
filename	O
as	O
the	O
data	O
source	O
for	O
sar	B-Application
.	O
</s>
<s>
Additional	O
to	O
sar	B-Application
command	O
,	O
Linux	B-Application
sysstat	B-Application
package	O
in	O
Debian	O
,	O
RedHat	O
Enterprise	O
Linux	B-Application
and	O
SuSE	O
provides	O
additional	O
reporting	O
tools	O
:	O
</s>
