SAR (System Activity Report)
SAR (System Activity Report) 사용법
설치 환경
커널 정보
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# CPU 정보
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#메모리 정보
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#메인보드 정보
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#시스템 정보
root@localhost:/home/westporch# dmidecode -t system
# dmidecode 2.12
SMBIOS 2.7 present.
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: SAMSUNG ELECTRONICS CO., LTD.
Product Name: 900X3C/900X3D/900X4C/900X4D
Version: 0.1
Serial Number: HRBF91GC800950
UUID: 1711B9C0-1DD2-11B2-8000-F52C808C706C
Wake-up Type: Power Switch
SKU Number: System SKUNumber
Family: ChiefRiver System
Handle 0x002C, DMI type 12, 5 bytes
System Configuration Options
Option 1: DSN:HDD_SERIAL
Option 2: DSN:MEM_SERIAL
Option 3: DSN:NO_BATTERY
Option 4: SMI:00B2E004
Handle 0x002F, DMI type 32, 11 bytes
System Boot Information
Status: No errors detected
Handle 0x0032, DMI type 23, 13 bytes
System Reset
Status: Disabled
Watchdog Timer: Present
Boot Option: Do Not Reboot
Boot Option On Limit: Do Not Reboot
Reset Count: Unknown
Reset Limit: Unknown
Timer Interval: Unknown
Timeout: Unknown
Handle 0x003E, DMI type 15, 81 bytes
System Event Log
Area Length: 18 bytes
Header Start Offset: 0x0000
Header Length: 16 bytes
Data Start Offset: 0x0010
Access Method: General-purpose non-volatile data functions
Access Address: 0x00F0
Status: Valid, Not Full
Change Token: 0x00000000
Header Format: Type 1
Supported Log Type Descriptors: 29
Descriptor 1: Single-bit ECC memory error
Data Format 1: Multiple-event handle
Descriptor 2: Multi-bit ECC memory error
Data Format 2: Multiple-event handle
Descriptor 3: Parity memory error
Data Format 3: None
Descriptor 4: Bus timeout
Data Format 4: None
Descriptor 5: I/O channel block
Data Format 5: None
Descriptor 6: Software NMI
Data Format 6: None
Descriptor 7: POST memory resize
Data Format 7: None
Descriptor 8: POST error
Data Format 8: POST results bitmap
Descriptor 9: PCI parity error
Data Format 9: None
Descriptor 10: PCI system error
Data Format 10: None
Descriptor 11: CPU failure
Data Format 11: None
Descriptor 12: EISA failsafe timer timeout
Data Format 12: None
Descriptor 13: Correctable memory log disabled
Data Format 13: None
Descriptor 14: Logging disabled
Data Format 14: None
Descriptor 15: System limit exceeded
Data Format 15: None
Descriptor 16: Asynchronous hardware timer expired
Data Format 16: None
Descriptor 17: System configuration information
Data Format 17: None
Descriptor 18: Hard disk information
Data Format 18: None
Descriptor 19: System reconfigured
Data Format 19: None
Descriptor 20: Uncorrectable CPU-complex error
Data Format 20: None
Descriptor 21: Log area reset/cleared
Data Format 21: None
Descriptor 22: System boot
Data Format 22: None
Descriptor 23: OEM-specific
Data Format 23: None
Descriptor 24: OEM-specific
Data Format 24: None
Descriptor 25: OEM-specific
Data Format 25: None
Descriptor 26: OEM-specific
Data Format 26: None
Descriptor 27: OEM-specific
Data Format 27: None
Descriptor 28: OEM-specific
Data Format 28: None
Descriptor 29: OEM-specific
Data Format 29: None
root@localhost:/home/westporch# 설치
sysstat 패키지는 sar, mpstat 명령어를 포함하고 있습니다.
sar를 사용하기 위해서는 sysstat 패키지를 설치해야합니다.
아래 명령어로 sysstat 패키지를 설치합니다.
root@localhost:/home/westporch# apt-get install sysstat설정
/etc/default/sysstat에서 ENABLED= 항목을 true로 변경합니다.
root@localhost:/home/westporch# vi /etc/default/sysstat#
# 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"sar 실행
sar -V 명령어로 sysstat의 버전을 확인해보세요.
root@localhost:/etc/default# sar -V
sysstat version 11.0.1
(C) Sebastien Godard (sysstat <at> orange.fr)
root@localhost:/etc/default#sar -u 1 5 명령어를 입력해보세요. 1초 간격으로 5번 CPU의 성능을 측정합니다.
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#위 결과의 각 필드에 대한 설명입니다.
%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.