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仮想化基盤Xenの性能評価 / Performance evaluation of virtualization platform Xen
Taketo Sasaki
February 27, 2016
Technology
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仮想化基盤Xenの性能評価 / Performance evaluation of virtualization platform Xen
第3回関西IT系インフラ勉強会発表資料
Taketo Sasaki
February 27, 2016
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Transcript
ԾԽج൫XenͷੑೳධՁ id:taketo957 ୈ3ճؔITܥΠϯϑϥษڧձ
ࣗݾհ • id:taketo957 • ژେֶେֶӃम࢜ • ͯͳΞϧόΠτ • ฏੜ·Ε
ࠓͷ͓ • Xenͱʁ • Xenͷར༻ͱݱঢ়@ͯͳ • XenͷCPUͷઃఆपΓͷ
Xenͱʁ
Xenͱ • ԾϚγϯϞχλ • ෳͷOSΛฒྻʹಈ࡞ͤ͞Δ͜ͱ͕Ͱ͖Δ • Dom0ͱDomU • Dom0͕XenͷཧϋʔυΣΞΞΫηεΛ୲͏ •
DomUϋʔυΣΞʹΞΫηε͠ͳ͍
XenͷΠϝʔδ • ϋΠύʔόΠβ͕ϋʔυΣΞ্Ͱ࣮ߦ • Xenىಈ࣌ʹDom0͕ىಈ • γεςϜىಈޙɼDomUͳͲ͕ىಈ ϋʔυΣΞ 9FOϋΠύʔόΠβ %PN
%PN6 %PN6 ήετ্ͷϓϩηε ήετ্ͷϓϩηε ήετ্ͷϓϩηε
ԾԽαʔόͷߏங@ͯͳ • ϋʔυΣΞϦιʔεͷར༻ͷ্ • Ϧιʔεར༻ͷޮԽ • ྫ͑ɼ • CPU͕ۭ͍͍ͯΔˠWebαʔό •
IO͕ۭ͍͍ͯΔˠDBαʔό • ಉډΛආ͚ΔΈ߹Θͤ • ෛՙͷߴ͍ͷಉ࢜ආ͚Δ • ಉ͡༻్ͷͷආ͚Δ • ॏཁͳϗετ͚͞Δ %PN ϋʔυΣΞ %PN6 8FCαʔό %PN6 %#αʔό %PN6 Ωϟογϡαʔό
ԾԽαʔόͷݱঢ়@ͯͳ લఏ ϋʔυΣΞੑೳͷ্ʹΑͬͯ%PN͋ͨΓͷ%PN6͕૿Ճ ੲࣗ࡞αʔό͕த৺ͩͬͨ োͷ࣮ྫ ಛʹ&MBTUJDTFBSDIͱಉډͯ͠ΔαʔόͰো͕ൃੜ ϋʔυΣΞϦιʔε͕༨͍ͬͯΔͷʹෛՙ͕͕͋Δ >> େ͖ͳো͕5݅ɼখ͍͞ͷ߹Θͤͯ20݅Ҏ্ ॏཁͳϗετΛकΔͨΊʹ%PN6Λଞͷ%PNʹҠͨ͠Γɽɽɽ
ͷൃੜݪҼʁ %PNͷϩά <TDIFE@EFMBZFE>TDIFE35UISPUUMJOHBDUJWBUFE େͳ࣌ؒΛඅ͢35λεΫ͕ଘࡏ͍ͯ͠Δ ݪҼͷՄೳੑ %PNͷΧʔωϧ 9FOࣗମ >>
εέδϡʔϥʹ͕͋Γͦ͏
Ͳ͏͍͏߹ʹੑೳ͕ Լ͢Δ͔ௐͯΈͨ
࣮ݧڥ • ݕূػ • ϝϞϦɿ100GB • CPUɿ16ݸɼ2.60GHz • Xen 4.4.1ʢcreditεέδϡʔϥʣ
• Debian 8 • DomU • elsΛ฿ ϝϞϦɿ40GBɼσΟεΫɿ132GB • MySQLΛ฿ ϝϞϦɿ8GBɼσΟεΫɿ10GB %PN ϋʔυΣΞ %PN6 &MBTUJDTFBSDIΛ฿ %PN6 .Z42-Λ฿ . . . .
ϕϯνϚʔΫ֓ཁ ࢦඪ ฏۉಡΈࠐΈʢύϑΥʔϚϯεʣ ॠؒಡΈࠐΈͷ࠷খʢ҆ఆੑʣ ϕϯνϚʔΫπʔϧ .Z42-Λ฿ͨ͠%PN6 (#ͷϝϞϦΛಡΉ
&MBTUJDTFBSDIΛ฿ͨ͠%PN6 (#ͷσΟεΫྖҬΛಡΉ
ઃఆ֓ཁਤ ϋʔυΣΞ 9FOϋΠύʔόΠβ %PN %PN6 .Z42-Λ฿ %PN6 &MTΛ฿ Q$16 Q$16
Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16
ϝϞϦϦʔυɿεϨουͱͷؔ ಉډϗετ͕͍͠ͱεϨουͷ্ঢʹͭΕͯ҆ఆੑ͕ஶ͘͠Լ͢Δ ۩ମతʹಉډϗετ͕εϨουҎ্ͰɼεϨουҎ্ͷͱ͖ ύϑΥʔϚϯε ύϑΥʔϚϯεʢಉډϗετ͕ߴෛՙʣ ҆ఆੑ ҆ఆੑʢಉډϗετ͕ߴෛՙʣ
σΟεΫϦʔυɿεϨουͱͷؔ ಉډϗετ͕͍͠ͱεϨουͷ্ঢʹͭΕͯ҆ఆੑ͕ஶ͘͠Լ͢Δ ϝϞϦͷ߹ΑΓݦஶ ύϑΥʔϚϯε ύϑΥʔϚϯεʢಉډϗετ͕ߴෛՙʣ ҆ఆੑ ҆ఆੑʢಉډϗετ͕ߴෛՙʣ
ElasticsearchΈ͍ͨͳϗετ͕ಉډͯ͠Δͱ ੑೳ͕҆ఆ͠ͳ͘ͳΔͷຊʹ͋Γͦ͏
Ͳ͏͢Εʁ
XenͷCPUؔ࿈ͷઃఆ߲ • Xenͷઃఆ߲ͰͳΜͱ͔͍ͨ͠ • εέδϡʔϥͷछྨʢcredit͔credit2͔ʣ • CPU Poolͷઃఆ • vCPUͷɼweightɼcap
• vCPUͷpinning
ϝϞϦϦʔυɿcredit2ͱൺֱ DSFEJUͷํ͕҆ఆͨ͠ੑೳΛࣔ͢ ճͷ࣮ݧΛ௨ׂͯ͡ఔύϑΥʔϚϯεԼ͍ͯͨ͠ σΟεΫϦʔυܭଌͷࡍʹຖճ%PN͝ͱࢮΜͰσʔλऔΕͳ͔ͬͨ ύϑΥʔϚϯεʢcreditʣ ҆ఆੑʢcreditʣ ύϑΥʔϚϯεʢcredit2ʣ ҆ఆੑʢcredit2ʣ
ઃఆ֓ཁਤ ϋʔυΣΞ 9FOϋΠύʔόΠβ %PN %PN6 .Z42-Λ฿ %PN6 &MTΛ฿ Q$16 Q$16
Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16 Q$16
ϝϞϦϦʔυɿߴෛՙϗετΛผcpu_poolʹ ߴෛՙ%PN6Λผ1PPMʹҠ͢͜ͱͰύϑΥʔϚϯεɼ҆ఆੑͱʹվળͨ͠ ׂ͚ͨͩ͠಄ଧͪૣ͘ͳΔͷͱઃఆʹ͔͔Δίετ͕ߴ͍ ύϑΥʔϚϯε ҆ఆੑ ύϑΥʔϚϯεʢߴෛՙϗετผډʣ ҆ఆੑʢߴෛՙϗετผډʣ
ϝϞϦϦʔυɿDom0ʹweightΛઃఆ ߴෛՙϗετಉډͷ߹ ͦΜͳʹมԽͤͣʢ҆ఆੑଟ֎Εʣ ύϑΥʔϚϯε ҆ఆੑ weight
σΟεΫϦʔυɿDom0ʹweightΛઃఆ ߴෛՙϗετಉډͷ߹ %PNͷXFJHIUΛ૿͢ͱൺྫͯ͠ύϑΥʔϚϯε্͕ʢ҆ఆੑมΘΒͣʣ ύϑΥʔϚϯε ҆ఆੑ weight
͜Ε·Ͱͷ·ͱΊ
·ͱΊ • ElasticsearchͷΑ͏ͳϗετ͕ಉډͯ͠Δ߹ʹੑೳԼൃੜͯͦ͠͏ • ಛʹɼI/O͕େ͖͍ϗετͷӨڹେ͖͍ʢDom0͝ͱࢮΜͩΓ͢Δʣ • ϝϞϦͷ߹ੑೳྼԽ͋Δ͚ͲࢮΜͩΓ͠ͳ͍ • ElasticsearchͷΑ͏ͳI/O͕େ͖͍ϗετಉډͤ͞ͳ͍ͷ͕҆શͦ͏ •
جຊΦʔόʔίϛοτ͍͕ͤͨ͞ɼ͕ඞཁ • େن͚Ͱͳ͍I/O͕ଟ͍αʔόͳͲࡌͤΔ߹ʹDom0ʹweightΛઃఆ • େن͚ʹcreditΛɼόονͳͲͷখنDomUΛେྔʹ٧ΊࠐΉࡍʹ credit2Λબ͢Δͱྑ͍͔ • CPU PoolΛ͚ͨࡍʹޮՌ͋ͬͨ ͨͩɼઃఆʹ͔͔Δίετ͕ߴ͍ͷͰϐϯϙΠϯτͰઃఆ͢Δͱ͔ʹͳΓͦ͏