Westporch: 새 문서: 작성일자: 2015년 10월 23일 작성자: westporch 본 문서에서는 SAR (System Activity Report) 설치 및 사용법을 설명합니다. == 설치 == sysstat 패키지는...

2017-08-29T14:00:05Z

새 문서: 작성일자: 2015년 10월 23일 작성자: westporch 본 문서에서는 SAR (System Activity Report) 설치 및 사용법을 설명합니다. == 설치 == sysstat 패키지는...

새 문서

작성일자: 2015년 10월 23일
작성자: westporch

본 문서에서는 SAR (System Activity Report) 설치 및 사용법을 설명합니다.

== 설치 ==
sysstat 패키지는 sar, mpstat 명령어를 포함하고 있습니다. sar를 사용하기 위해서는 sysstat 패키지를 설치해야합니다. 아래 명령어로 sysstat 패키지를 설치합니다.

<pre>
root@localhost:/home/westporch# apt-get install sysstat
</pre>

== 설정 ==

'''/etc/default/sysstat'''에서 '''ENABLED=''' 항목을 true로 변경합니다.

<pre>
root@localhost:/home/westporch# vi /etc/default/sysstat
</pre>

<pre>
#
# Default settings for /etc/init.d/sysstat, /etc/cron.d/sysstat
# and /etc/cron.daily/sysstat files
#

# Should sadc collect system activity informations? Valid values
# are "true" and "false". Please do not put other values, they
# will be overwritten by debconf!
ENABLED="true"
</pre>

== sar 실행 ==

'''sar -V''' 명령어로 '''sysstat'''의 버전을 확인해보세요.

<pre>
root@localhost:/etc/default# sar -V
sysstat version 11.0.1
(C) Sebastien Godard (sysstat <at> orange.fr)
root@localhost:/etc/default#
</pre>

sar -u 1 5 명령어를 입력해보세요. 1초 간격으로 5번 CPU의 성능을 측정합니다.

<pre>
root@localhost:/home/westporch# sar -u 1 5
Linux 3.16.0-4-686-pae (localhost) 2015년 10월 23일 _i686_ (4 CPU)

CPU %user %nice %system %iowait %steal %idle
all 4.01 0.00 0.50 0.00 0.00 95.49
all 2.26 0.00 0.50 0.00 0.00 97.24
all 2.01 0.00 1.00 0.00 0.00 96.99
all 3.53 0.00 0.50 0.00 0.00 95.97
all 3.76 0.00 0.50 0.00 0.00 95.74
Average: all 3.11 0.00 0.60 0.00 0.00 96.29
root@localhost:/home/westporch#
</pre>

위 결과의 각 필드에 대한 설명은 다음과 같습니다.

<pre>
%user
Percentage of CPU utilization that occurred while executing at the user level (application). Note that this field includes time spent running virtual processors.

%system
Percentage of CPU utilization that occurred while executing at the system level (kernel). Note that this field includes time spent ser‐ vicing hardware and software interrupts.

%iowait
Percentage of time that the CPU or CPUs were idle during which the system had an outstanding disk I/O request.

%steal
Percentage of time spent in involuntary wait by the virtual CPU or CPUs while the hypervisor was servicing another virtual processor.

%idle
Percentage of time that the CPU or CPUs were idle and the system did not have an outstanding disk I/O request.
</pre>

== 설치 환경 ==

=== 커널 정보 ===

<pre>
root@localhost:/home/westporch# uname -a
Linux localhost 3.16.0-4-686-pae #1 SMP Debian 3.16.7-ckt11-1+deb8u3 (2015-08-04) i686 GNU/Linux
root@localhost:/home/westporch#
</pre>

=== CPU 정보 ===

<pre>
root@localhost:/home/westporch# dmidecode -t processor
# dmidecode 2.12
SMBIOS 2.7 present.

Handle 0x0004, DMI type 4, 42 bytes
Processor Information
Socket Designation: CPU Socket - U3E1
Type: Central Processor
Family: Core i5
Manufacturer: Intel(R) Corporation
ID: A9 06 03 00 FF FB EB BF
Signature: Type 0, Family 6, Model 58, Stepping 9
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz
Voltage: 0.8 V
External Clock: 100 MHz
Max Speed: 1700 MHz
Current Speed: 1700 MHz
Status: Populated, Enabled
Upgrade: Socket rPGA988B
L1 Cache Handle: 0x0002
L2 Cache Handle: 0x0003
L3 Cache Handle: 0x0004
Serial Number: To Be Filled By O.E.M.
Asset Tag: To Be Filled By O.E.M.
Part Number: To Be Filled By O.E.M.
Core Count: 2
Core Enabled: 2
Thread Count: 4
Characteristics:
64-bit capable

root@localhost:/home/westporch#
</pre>

=== 메모리 정보 ===

<pre>
root@localhost:/home/westporch# dmidecode -t memory
# dmidecode 2.12
SMBIOS 2.7 present.

Handle 0x0036, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 32 GB
Error Information Handle: Not Provided
Number Of Devices: 4

Handle 0x0037, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0036
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0
Type: DDR3
Type Detail: Synchronous
Speed: 1600 MHz
Manufacturer: Samsung
Serial Number: 6667E824
Asset Tag: 9876543210
Part Number: M471B5273DH0-CK0
Rank: Unknown
Configured Clock Speed: 1600 MHz

Handle 0x0038, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0036
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelA-DIMM1
Bank Locator: BANK 1
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: 9876543210
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown

Handle 0x0039, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0036
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: SODIMM
Set: None
Locator: ChannelB-DIMM0
Bank Locator: BANK 2
Type: DDR3
Type Detail: Synchronous
Speed: 1600 MHz
Manufacturer: Samsung
Serial Number: 6667E830
Asset Tag: 9876543210
Part Number: M471B5273DH0-CK0
Rank: Unknown
Configured Clock Speed: 1600 MHz

Handle 0x003A, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0036
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelB-DIMM1
Bank Locator: BANK 3
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: 9876543210
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown

root@localhost:/home/westporch#
</pre>

=== 메인보드 정보 ===

<pre>
root@localhost:/home/westporch# dmidecode -t baseboard
# dmidecode 2.12
SMBIOS 2.7 present.

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
Manufacturer: SAMSUNG ELECTRONICS CO., LTD.
Product Name: SAMSUNG_NP1234567890
Version: FAB1
Serial Number: 123490EN400015
Asset Tag: Base Board Asset Tag
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: Part Component
Chassis Handle: 0x0000
Type: Motherboard
Contained Object Handles: 0

Handle 0x0029, DMI type 10, 6 bytes
On Board Device Information
Type: Video
Status: Enabled
Description: Intel(R) Extreme Graphics 3 Controller

Handle 0x002A, DMI type 10, 6 bytes
On Board Device Information
Type: Sound
Status: Enabled
Description: Intel(R) Azalia Audio Device

root@localhost:/home/westporch#
</pre>

Sar - 편집 역사

Westporch: 새 문서: 작성일자: 2015년 10월 23일 작성자: westporch 본 문서에서는 SAR (System Activity Report) 설치 및 사용법을 설명합니다. == 설치 == sysstat 패키지는...