動的ベースライン
このページでは、Splunk AppDynamics がお使いのアプリケーションのベースラインパフォーマンスを自動的に計算する方法について説明します。全般的なパフォーマンス特性を確立すると、アプリケーションの異常な状態を検出できるようになります。Splunk AppDynamics はベースラインを使用して以下を実行します。
- フローマップに色を付ける。
- トランザクションスコアのダッシュボードを表示する。
- メトリックグラフとメトリックブラウザのメトリックを比較する。
- 正常性ルールの正常性を評価する（「 正常性ルール」を参照）。
ベースラインの仕組み
Splunk AppDynamicsでは、基礎となる 1 時間分のデータを使用してベースラインが計算されます。ベースラインはすべてのメトリックについて計算できます。ベースラインには2つの主要変数が存在します。
- ベースラインの計算には、データが蓄積された時間が考慮されるべき。
- ベースラインの季節性。
Use Baselines to Identify Trends
Performance expectations can differ between hours of the day, days of the week, or even months of the year. For example:
- A retail application may experience heavier traffic on the weekend than the rest of the week.
- A payroll application may experience a higher load at the beginning and end of the month compared to the rest of the month.
To account for this variation, you can use a rolling time period as the baseline context. A rolling time period establishes the baseline against data from the current hour taken at a daily, weekly, or monthly interval over the course of the time period.
For example, you can have a baseline that uses a daily trend with a time period configured for 30 days or a weekly trend with a time period of 90 days.
A daily trend calculates the baseline from the data accumulated at the same time each day over the last 30 days.
A weekly trend calculates the baseline from the data accumulated on the same hour and day of the week over the last 90 days. This is one of the available default configurations.
A monthly trend calculates the baseline from data accumulated at the same hour and same day of the month. So, for example, on January 5th at 10:30 AM, the baseline is established based on data accumulated at the same hour on the 5th of each month for the prior 365 days:
Baselines are not available immediately upon startup. It takes time and application load for the to collect data and create its initial baselines. The amount of time depends on the baseline type being used: daily, weekly, monthly, or none. Using none requires several hours before a baseline is available, daily takes several days, weekly takes several weeks, and so on.
標準偏差の計算方法
標準偏差は、次の標準式を使用して計算します。
標準偏差値
この場合：A B N
標準偏差の計算は、使用されるメトリックのタイプによって異なります。
- 時間ロールアップタイプが合計または平均の場合
- クラスタロールアップタイプが個別または集合の場合クラスタロールアップタイプは、階層またはアプリケーションレベルでのみ適用されます（ノードレベルのメトリックは同じ計算になります）。
この例では、以下のメトリックタイプを使用した標準偏差を示します。
- 時間ロールアップタイプ = 平均
- クラスタロールアップタイプ = 集合
Metric - Calls Per Minute (Average, Collective)
(Hourly Metric Table)
| 時間 | 合計 | Count | 重み値 | 2 乗された重み値 |
|---|---|---|---|---|
|
180 |
2 |
180 |
300 |
|
300 |
2 |
300 |
780 |
|
150 |
2 |
150 |
195 |
これらのメトリック値の場合、タイプのベースライン = [All Data] です。
日次、週次、または月次の季節性の場合、考慮されるデータポイントはそれぞれ、すべての日、同じ曜日、または同じ月日の同じ時間の値です。
この場合のベースラインの計算は次のようになります。
値（180+300+150）÷ 360 = 1.75
準偏差値 sqrt(((300+780+195) - (((180+300+150)^2)/360))÷360) = 0.69
Adaptive Baselines
https://www.splunk.com/en_us/legal/appdynamics-limited-license-agreement.html
for details.Adaptive Baseline is a baseline configuration designed to provide more robust and reliable health rule evaluation by minimizing the impact of outliers in metrics data. Traditional dynamic baselines can be significantly skewed by sudden spikes or anomalies. This spike could elevate the baseline, leading to missed critical alerts. The adaptive baselines prevent sudden spikes or drops from causing long-term baseline shifts and ensures consistent alerting behavior.
appdynamics.controller.alerting.baselines.adaptive.enabled property on the http://<controller host>:<port>/controller/admin.jsp page.Configure and View Baselines
A baseline deviation is the standard deviation from a baseline at a point in time, represented as an integer value. You can set health rule conditions based on baseline deviations. For example, you can configure a warning condition as two standard deviations from the baseline and a critical condition as four standard deviations from the baseline.
To configure baselines:
Daylight Saving Time for Baseline Calculation
The baseline calculation takes into account the daylight saving time. If your region has a daylight saving, contact your Accounts team to configure the baseline.read.time.zone property for your Splunk AppDynamics account.
On the http://<controller host>:<port>/controller/admin.jsp page, you need to add the baseline.read.time.zone property and one of the following values based on your region:
- ACT
- AET
- AGT
- ART
- AST
- Africa/Abidjan
- Africa/Accra
- Africa/Addis_Ababa
- Africa/Algiers
- Africa/Asmara
- Africa/Asmera
- Africa/Bamako
- Africa/Bangui
- Africa/Banjul
- Africa/Bissau
- Africa/Blantyre
- Africa/Brazzaville
- Africa/Bujumbura
- Africa/Cairo
- Africa/Casablanca
- Africa/Ceuta
- Africa/Conakry
- Africa/Dakar
- Africa/Dar_es_Salaam
- Africa/Djibouti
- Africa/Douala
- Africa/El_Aaiun
- Africa/Freetown
- Africa/Gaborone
- Africa/Harare
- Africa/Johannesburg
- Africa/Juba
- Africa/Kampala
- Africa/Khartoum
- Africa/Kigali
- Africa/Kinshasa
- Africa/Lagos
- Africa/Libreville
- Africa/Lome
- Africa/Luanda
- Africa/Lubumbashi
- Africa/Lusaka
- Africa/Malabo
- Africa/Maputo
- Africa/Maseru
- Africa/Mbabane
- Africa/Mogadishu
- Africa/Monrovia
- Africa/Nairobi
- Africa/Ndjamena
- Africa/Niamey
- Africa/Nouakchott
- Africa/Ouagadougou
- Africa/Porto-Novo
- Africa/Sao_Tome
- Africa/Timbuktu
- Africa/Tripoli
- Africa/Tunis
- Africa/Windhoek
- America/Adak
- America/Anchorage
- America/Anguilla
- America/Antigua
- America/Araguaina
- America/Argentina/Buenos_Aires
- America/Argentina/Catamarca
- America/Argentina/ComodRivadavia
- America/Argentina/Cordoba
- America/Argentina/Jujuy
- America/Argentina/La_Rioja
- America/Argentina/Mendoza
- America/Argentina/Rio_Gallegos
- America/Argentina/Salta
- America/Argentina/San_Juan
- America/Argentina/San_Luis
- America/Argentina/Tucuman
- America/Argentina/Ushuaia
- America/Aruba
- America/Asuncion
- America/Atikokan
- America/Atka
- America/Bahia
- America/Bahia_Banderas
- America/Barbados
- America/Belem
- America/Belize
- America/Blanc-Sablon
- America/Boa_Vista
- America/Bogota
- America/Boise
- America/Buenos_Aires
- America/Cambridge_Bay
- America/Campo_Grande
- America/Cancun
- America/Caracas
- America/Catamarca
- America/Cayenne
- America/Cayman
- America/Chicago
- America/Chihuahua
- America/Coral_Harbour
- America/Cordoba
- America/Costa_Rica
- America/Creston
- America/Cuiaba
- America/Curacao
- America/Danmarkshavn
- America/Dawson
- America/Dawson_Creek
- America/Denver
- America/Detroit
- America/Dominica
- America/Edmonton
- America/Eirunepe
- America/El_Salvador
- America/Ensenada
- America/Fort_Nelson
- America/Fort_Wayne
- America/Fortaleza
- America/Glace_Bay
- America/Godthab
- America/Goose_Bay
- America/Grand_Turk
- America/Grenada
- America/Guadeloupe
- America/Guatemala
- America/Guayaquil
- America/Guyana
- America/Halifax
- America/Havana
- America/Hermosillo
- America/Indiana/Indianapolis
- America/Indiana/Knox
- America/Indiana/Marengo
- America/Indiana/Petersburg
- America/Indiana/Tell_City
- America/Indiana/Vevay
- America/Indiana/Vincennes
- America/Indiana/Winamac
- America/Indianapolis
- America/Inuvik
- America/Iqaluit
- America/Jamaica
- America/Jujuy
- America/Juneau
- America/Kentucky/Louisville
- America/Kentucky/Monticello
- America/Knox_IN
- America/Kralendijk
- America/La_Paz
- America/Lima
- America/Los_Angeles
- America/Louisville
- America/Lower_Princes
- America/Maceio
- America/Managua
- America/Manaus
- America/Marigot
- America/Martinique
- America/Matamoros
- America/Mazatlan
- America/Mendoza
- America/Menominee
- America/Merida
- America/Metlakatla
- America/Mexico_City
- America/Miquelon
- America/Moncton
- America/Monterrey
- America/Montevideo
- America/Montreal
- America/Montserrat
- America/Nassau
- America/New_York
- America/Nipigon
- America/Nome
- America/Noronha
- America/North_Dakota/Beulah
- America/North_Dakota/Center
- America/North_Dakota/New_Salem
- America/Ojinaga
- America/Panama
- America/Pangnirtung
- America/Paramaribo
- America/Phoenix
- America/Port-au-Prince
- America/Port_of_Spain
- America/Porto_Acre
- America/Porto_Velho
- America/Puerto_Rico
- America/Punta_Arenas
- America/Rainy_River
- America/Rankin_Inlet
- America/Recife
- America/Regina
- America/Resolute
- America/Rio_Branco
- America/Rosario
- America/Santa_Isabel
- America/Santarem
- America/Santiago
- America/Santo_Domingo
- America/Sao_Paulo
- America/Scoresbysund
- America/Shiprock
- America/Sitka
- America/St_Barthelemy
- America/St_Johns
- America/St_Kitts
- America/St_Lucia
- America/St_Thomas
- America/St_Vincent
- America/Swift_Current
- America/Tegucigalpa
- America/Thule
- America/Thunder_Bay
- America/Tijuana
- America/Toronto
- America/Tortola
- America/Vancouver
- America/Virgin
- America/Whitehorse
- America/Winnipeg
- America/Yakutat
- America/Yellowknife
- Antarctica/Casey
- Antarctica/Davis
- Antarctica/DumontDUrville
- Antarctica/Macquarie
- Antarctica/Mawson
- Antarctica/McMurdo
- Antarctica/Palmer
- Antarctica/Rothera
- Antarctica/South_Pole
- Antarctica/Syowa
- Antarctica/Troll
- Antarctica/Vostok
- Arctic/Longyearbyen
- Asia/Aden
- Asia/Almaty
- Asia/Amman
- Asia/Anadyr
- Asia/Aqtau
- Asia/Aqtobe
- Asia/Ashgabat
- Asia/Ashkhabad
- Asia/Atyrau
- Asia/Baghdad
- Asia/Bahrain
- Asia/Baku
- Asia/Bangkok
- Asia/Barnaul
- Asia/Beirut
- Asia/Bishkek
- Asia/Brunei
- Asia/Calcutta
- Asia/Chita
- Asia/Choibalsan
- Asia/Chongqing
- Asia/Chungking
- Asia/Colombo
- Asia/Dacca
- Asia/Damascus
- Asia/Dhaka
- Asia/Dili
- Asia/Dubai
- Asia/Dushanbe
- Asia/Famagusta
- Asia/Gaza
- Asia/Harbin
- Asia/Hebron
- Asia/Ho_Chi_Minh
- Asia/Hong_Kong
- Asia/Hovd
- Asia/Irkutsk
- Asia/Istanbul
- Asia/Jakarta
- Asia/Jayapura
- Asia/Jerusalem
- Asia/Kabul
- Asia/Kamchatka
- Asia/Karachi
- Asia/Kashgar
- Asia/Kathmandu
- Asia/Katmandu
- Asia/Khandyga
- Asia/Kolkata
- Asia/Krasnoyarsk
- Asia/Kuala_Lumpur
- Asia/Kuching
- Asia/Kuwait
- Asia/Macao
- Asia/Macau
- Asia/Magadan
- Asia/Makassar
- Asia/Manila
- Asia/Muscat
- Asia/Nicosia
- Asia/Novokuznetsk
- Asia/Novosibirsk
- Asia/Omsk
- Asia/Oral
- Asia/Phnom_Penh
- Asia/Pontianak
- Asia/Pyongyang
- Asia/Qatar
- Asia/Qyzylorda
- Asia/Rangoon
- Asia/Riyadh
- Asia/Saigon
- Asia/Sakhalin
- Asia/Samarkand
- Asia/Seoul
- Asia/Shanghai
- Asia/Singapore
- Asia/Srednekolymsk
- Asia/Taipei
- Asia/Tashkent
- Asia/Tbilisi
- Asia/Tehran
- Asia/Tel_Aviv
- Asia/Thimbu
- Asia/Thimphu
- Asia/Tokyo
- Asia/Tomsk
- Asia/Ujung_Pandang
- Asia/Ulaanbaatar
- Asia/Ulan_Bator
- Asia/Urumqi
- Asia/Ust-Nera
- Asia/Vientiane
- Asia/Vladivostok
- Asia/Yakutsk
- Asia/Yangon
- Asia/Yekaterinburg
- Asia/Yerevan
- Atlantic/Azores
- Atlantic/Bermuda
- Atlantic/Canary
- Atlantic/Cape_Verde
- Atlantic/Faeroe
- Atlantic/Faroe
- Atlantic/Jan_Mayen
- Atlantic/Madeira
- Atlantic/Reykjavik
- Atlantic/South_Georgia
- Atlantic/St_Helena
- Atlantic/Stanley
- Australia/ACT
- Australia/Adelaide
- Australia/Brisbane
- Australia/Broken_Hill
- Australia/Canberra
- Australia/Currie
- Australia/Darwin
- Australia/Eucla
- Australia/Hobart
- Australia/LHI
- Australia/Lindeman
- Australia/Lord_Howe
- Australia/Melbourne
- Australia/NSW
- Australia/North
- Australia/Perth
- Australia/Queensland
- Australia/South
- Australia/Sydney
- Australia/Tasmania
- Australia/Victoria
- Australia/West
- Australia/Yancowinna
- BET
- BST
- Brazil/Acre
- Brazil/DeNoronha
- Brazil/East
- Brazil/West
- CAT
- CET
- CNT
- CST
- CST6CDT
- CTT
- Canada/Atlantic
- Canada/Central
- Canada/Eastern
- Canada/Mountain
- Canada/Newfoundland
- Canada/Pacific
- Canada/Saskatchewan
- Canada/Yukon
- Chile/Continental
- Chile/EasterIsland
- Cuba
- EAT
- ECT
- EET
- EST
- EST5EDT
- Egypt
- Eire
- Etc/GMT
- Etc/GMT+0
- Etc/GMT+1
- Etc/GMT+10
- Etc/GMT+11
- Etc/GMT+12
- Etc/GMT+2
- Etc/GMT+3
- Etc/GMT+4
- Etc/GMT+5
- Etc/GMT+6
- Etc/GMT+7
- Etc/GMT+8
- Etc/GMT+9
- Etc/GMT-0
- Etc/GMT-1
- Etc/GMT-10
- Etc/GMT-11
- Etc/GMT-12
- Etc/GMT-13
- Etc/GMT-14
- Etc/GMT-2
- Etc/GMT-3
- Etc/GMT-4
- Etc/GMT-5
- Etc/GMT-6
- Etc/GMT-7
- Etc/GMT-8
- Etc/GMT-9
- Etc/GMT0
- Etc/Greenwich
- Etc/UCT
- Etc/UTC
- Etc/Universal
- Etc/Zulu
- Europe/Amsterdam
- Europe/Andorra
- Europe/Astrakhan
- Europe/Athens
- Europe/Belfast
- Europe/Belgrade
- Europe/Berlin
- Europe/Bratislava
- Europe/Brussels
- Europe/Bucharest
- Europe/Budapest
- Europe/Busingen
- Europe/Chisinau
- Europe/Copenhagen
- Europe/Dublin
- Europe/Gibraltar
- Europe/Guernsey
- Europe/Helsinki
- Europe/Isle_of_Man
- Europe/Istanbul
- Europe/Jersey
- Europe/Kaliningrad
- Europe/Kiev
- Europe/Kirov
- Europe/Lisbon
- Europe/Ljubljana
- Europe/London
- Europe/Luxembourg
- Europe/Madrid
- Europe/Malta
- Europe/Mariehamn
- Europe/Minsk
- Europe/Monaco
- Europe/Moscow
- Europe/Nicosia
- Europe/Oslo
- Europe/Paris
- Europe/Podgorica
- Europe/Prague
- Europe/Riga
- Europe/Rome
- Europe/Samara
- Europe/San_Marino
- Europe/Sarajevo
- Europe/Saratov
- Europe/Simferopol
- Europe/Skopje
- Europe/Sofia
- Europe/Stockholm
- Europe/Tallinn
- Europe/Tirane
- Europe/Tiraspol
- Europe/Ulyanovsk
- Europe/Uzhgorod
- Europe/Vaduz
- Europe/Vatican
- Europe/Vienna
- Europe/Vilnius
- Europe/Volgograd
- Europe/Warsaw
- Europe/Zagreb
- Europe/Zaporozhye
- Europe/Zurich
- GB
- GB-Eire
- GMT
- GMT0
- Greenwich
- HST
- Hongkong
- IET
- IST
- Iceland
- Indian/Antananarivo
- Indian/Chagos
- Indian/Christmas
- Indian/Cocos
- Indian/Comoro
- Indian/Kerguelen
- Indian/Mahe
- Indian/Maldives
- Indian/Mauritius
- Indian/Mayotte
- Indian/Reunion
- Iran
- Israel
- JST
- Jamaica
- Japan
- Kwajalein
- Libya
- MET
- MIT
- MST
- MST7MDT
- Mexico/BajaNorte
- Mexico/BajaSur
- Mexico/General
- NET
- NST
- NZ
- NZ-CHAT
- Navajo
- PLT
- PNT
- PRC
- PRT
- PST
- PST8PDT
- Pacific/Apia
- Pacific/Auckland
- Pacific/Bougainville
- Pacific/Chatham
- Pacific/Chuuk
- Pacific/Easter
- Pacific/Efate
- Pacific/Enderbury
- Pacific/Fakaofo
- Pacific/Fiji
- Pacific/Funafuti
- Pacific/Galapagos
- Pacific/Gambier
- Pacific/Guadalcanal
- Pacific/Guam
- Pacific/Honolulu
- Pacific/Johnston
- Pacific/Kiritimati
- Pacific/Kosrae
- Pacific/Kwajalein
- Pacific/Majuro
- Pacific/Marquesas
- Pacific/Midway
- Pacific/Nauru
- Pacific/Niue
- Pacific/Norfolk
- Pacific/Noumea
- Pacific/Pago_Pago
- Pacific/Palau
- Pacific/Pitcairn
- Pacific/Pohnpei
- Pacific/Ponape
- Pacific/Port_Moresby
- Pacific/Rarotonga
- Pacific/Saipan
- Pacific/Samoa
- Pacific/Tahiti
- Pacific/Tarawa
- Pacific/Tongatapu
- Pacific/Truk
- Pacific/Wake
- Pacific/Wallis
- Pacific/Yap
- Poland
- Portugal
- ROK
- SST
- Singapore
- SystemV/AST4
- SystemV/AST4ADT
- SystemV/CST6
- SystemV/CST6CDT
- SystemV/EST5
- SystemV/EST5EDT
- SystemV/HST10
- SystemV/MST7
- SystemV/MST7MDT
- SystemV/PST8
- SystemV/PST8PDT
- SystemV/YST9
- SystemV/YST9YDT
- Turkey
- UCT
- US/Alaska
- US/Aleutian
- US/Arizona
- US/Central
- US/East-Indiana
- US/Eastern
- US/Hawaii
- US/Indiana-Starke
- US/Michigan
- US/Mountain
- US/Pacific
- US/Pacific-New
- US/Samoa
- UTC
- Universal
- VST
- W-SU
- WET
- Zulu