Uhlelo luzonciphisa izindleko zamandla ngesigamu.
/isithombe CC BY-SA
Kungani sidinga i-architecture entsha?
Ngo-2030, izinto zikagesi zizosebenzisa u-40% wawo wonke amandla akhiqizwa emhlabeni. Cishe u-20% walo mqulu uzovela emkhakheni we-IT kanye nezikhungo zedatha. Ngu Ngokusho kwabahlaziyi baseYurophu, izikhungo zedatha sezivele "zithatha" i-1,4% yawo wonke ugesi. Kulindeleke ukuthi lokhu .
Isitoreji se-SSD sisebenzisa ingxenye enkulu kagesi. Esikhathini esisuka ku-2012 kuya ku-2017, isabelo samadrayivu e-solid-state kuzikhungo zedatha . Nakuba ama-SSD edla amandla amathathu amancane () kune-HDD, izikweletu zikagesi zihlala zizinkulu esikalini sezikhungo zedatha.
Ukuze kuncishiswe ukusetshenziswa kwamandla kwamadrayivu e-solid-state esikhungweni sedatha, onjiniyela abavela ku-MIT bathuthukise ukwakheka okusha kwesitoreji se-SSD. Ibizwa nge-LightStore futhi ikuvumela ukuthi uxhume amadrayivu ngqo kunethiwekhi yesikhungo sedatha, udlule amaseva okugcina. Ngu ababhali, uhlelo luzonciphisa izindleko zamandla ngesigamu.
Kanjani lo msebenzi
I-LightStore iyisitolo se-flash key-value esibonisa izicelo zabasebenzisi ukushayela njengokhiye. Bese zithunyelwa kuseva, ekhipha idatha ehlotshaniswa nalowo khiye.
Uhlelo iphrosesa eyakhelwe ngaphakathi eyonga amandla, inkumbulo ye-DRAM ne-NAND. Ilawulwa isilawuli nesofthiwe ekhethekile. Isilawuli sinesibopho sokusebenza nezinhlaka ze-NAND, futhi isofthiwe inesibopho sokucubungula izicelo ze-KV nokugcina amapheya okhiye. Isakhiwo sesofthiwe sakhiwe ngesisekelo , esetshenziswa kuma-DBMS amaningi esimanje.
Umdwebo wezakhiwo ungamelwa kanje:
Umdwebo ubonisa izingxenye eziyisisekelo ze-LightStore. Iqoqo le-node lisebenza ngamapheya enani elingukhiye. Amaseva ohlelo lokusebenza axhunywe ohlelweni kusetshenziswa ama-adaptha. Baguqula izicelo zeklayenti (ezifana ne-fread() kusuka ku-POSIX API) zibe izicelo ze-KV. I-architecture nayo inama-adaptha ahlukene e- , vimba (ngokusekelwe kumojula ye-BUSE) nokugcinwa kwamafayela.
Lapho usabalalisa izicelo, i-adaptha isebenzisa . Isetshenziswa ezinhlelweni ezifana ne-Redis noma i-Swift. Isebenzisa ukhiye wesicelo we-KV, i-adaptha ikhiqiza ukhiye we-hashi ivelu yawo ekhomba indawo eqondiwe.
Umthamo weqoqo le-LightStore ukala ngokulandelana - vele uxhume ama-node engeziwe kunethiwekhi. Kwezinye izimo, kungase kudingeke uthenge amaswishi amasha. Kodwa-ke, abathuthukisi bahlomise indawo ngayinye ngezikhala ezengeziwe zokuxhuma ama-NAND chips.
Amandla e-Architecture
Onjiniyela be-MIT bathi ikhambi elisuselwa ku-LightStore linomphumela we-620 Mbps ngaphezulu kwe-10 Gigabit Ethernet. I-node eyodwa idla u-10 W esikhundleni se-20 W evamile (kuzinhlelo ze-SSD ezisetshenziswa izikhungo zedatha namuhla). Ngaphezu kwalokho, imishini ithatha ingxenye yesikhala.
Manje onjiniyela baphothula izici ezithile. Isibonelo, i-LightStore ayikwazi ukusebenza ngemibuzo yebanga kanye nemibuzo emincane. Lezi zici zizongezwa esikhathini esizayo, njengoba i-LightStore isebenzisa izihlahla ze-LSM. Futhi, isistimu isenayo isethi elinganiselwe yama-adaptha - i-YCSB nama-adaptha we-block asekelwe. Ngokuzayo, i-LightStore izokwazi ukucubungula imibuzo ye-SQL, njll.
Ezinye intuthuko
Ehlobo lika-2018, uMarvell, inkampani yokuthuthukisa isitoreji, wethule umugqa omusha wabalawuli be-SSD ngokusekelwe ezinhlelweni ze-AI. Onjiniyela bahlanganise izisheshisi zokufunda ezijulile ze-NVIDIA zibe izilawuli ezijwayelekile zezikhungo zedatha nezinhlelo zokusebenza zamaklayenti. Ngenxa yalokho, badale i-architecture ezimele edla amandla amancane uma iqhathaniswa nezilawuli ze-SSD zakudala. Inkampani inethemba lokuthi uhlelo luzothola uhlelo lokusebenza kukhompyutha enqenqemeni, ukuhlaziya idatha enkulu kanye ne-IoT.
Ulayini we-Western Digital Blue wamadrayivu usanda kubuyekezwa. Ngo-Ephreli, abathuthukisi bethule isisombululo - i-WD Blue SSD esekelwe kubuchwepheshe beSanDisk, i-WD eyayithola ngonyaka odlule. Ama-WD Blue SSD abuyekeziwe anikeza ukusebenza okuthuthukisiwe nokusebenza kahle kwamandla. I-architecture yakhiwe ngesisekelo sokucaciswa , enikeza ukufinyelela kuma-SSD axhunywe nge-PCI Express.
Lokhu kucaciswa kuthuthukisa ukusebenza kahle kwamadrayivu e-SSD ngenani elikhulu lezicelo ngasikhathi sinye futhi kusheshise ukufinyelela kwedatha. Ukwengeza, i-NVMe ikuvumela ukuthi ulinganise isixhumi esibonakalayo se-SSD - okuningi kubakhiqizi behadiwe ukuze kuthuthukiswe abashayeli abahlukile, izixhumi kanye nezici zefomu.
Amathemba
Imakethe ye-SSD yesikhungo sedatha iqhubekela ekwakhiweni okwenziwe lula, i-automation yezingxenye zokugcina, kanye nokusebenza kahle kwamandla. Ukuthuthukiswa konjiniyela abavela ku-MIT kuxazulula inkinga yokugcina. Ababhali ukuthi i-LightStore izoba indinganiso yemboni yokugcinwa kwe-SSD ezikhungweni zedatha. Futhi singacabanga ukuthi esikhathini esizayo, izakhiwo ezintsha ezisebenza kahle kakhulu zizovela ngokusekelwe kukho.
Izinto ezimbalwa ezivela kubhulogi Lokuqala mayelana ne-IaaS yebhizinisi:
Source: www.habr.com