Ukuze ubone ukuthi i-I/O ibangela ukunensa kwesistimu ungasebenzisa imiyalo embalwa kodwa elula kakhulu i-unix command top . Kusuka kulayini we-CPU ungabona iphesenti lamanje le-CPU kokuthi I/O Wait; Uma iphezulu inombolo izinsiza ze-cpu zilinde ukufinyelela kwe-I/O.
Yini ebhekwa njenge-Iowait ephezulu?
Impendulo engcono kakhulu engingakunika yona ithi "i-iowait iphezulu kakhulu uma ithinta ukusebenza." “U-50% wakho wesikhathi se-CPU uchithwa e-iowait ” isimo singase sibe ngcono uma une-I/O eminingi kanye nomunye umsebenzi omncane kakhulu okufanele uwenze inqobo nje uma idatha ibhalwa kudiski “ngokushesha ngokwanele”.
Kungani i-Iowait iphezulu i-Linux?
I/O linda nokusebenza kweseva ye-Linux
Kanjalo, i-iowait ephezulu isho ukuthi i-CPU yakho ilinde izicelo, kodwa uzodinga ukuphenya kabanzi ukuze uqinisekise umthombo nomthelela. Isibonelo, isitoreji seseva (i-SSD, i-NVMe, i-NFS, njll.) cishe ihlala ihamba kancane kunokusebenza kwe-CPU.
Ngazi kanjani uma i-CPU yami ibhodlela i-Linux?
Singathola ibhodlela ekusebenzeni kweseva ye-linux sisebenzisa indlela elandelayo..
- Thatha okukhiphayo kwe-TOP & mem, imiyalo ye-vmstat kuncwajana eyodwa.
- Thatha ukukhishwa kwe-sar kwezinyanga ezi-3.
- hlola ukuhlukahluka kwezinqubo & ukusetshenziswa ngesikhathi sokuqalisa noma ushintsho.
- Uma umthwalo ungavamile kusukela ushintsho.
Ngiyilungisa kanjani i-Iowait ephezulu?
Amacala amathathu okungenzeka kakhulu e-iowait ephezulu yilezi: idiski elibi, inkumbulo enephutha kanye nezinkinga zenethiwekhi. Uma ungakaboni lutho olubalulekile, sekuyisikhathi sokuhlola uhlelo lwakho. Uma kungenzeka, khahlela bonke abasebenzisi ebhokisini, vala iseva yeWebhu, isizindalwazi kanye nanoma yiluphi olunye uhlelo lokusebenza lomsebenzisi. Ngena ngemvume ngomugqa womyalo bese umisa i-XDM.
Iyini i-Iowait ku-Linux?
Amaphesenti esikhathi lapho i-CPU noma ama-CPU ayengenzi lutho phakathi naso lapho isistimu inesicelo esisele sediski se-I/O. Ngakho-ke, i-%iowait isho ukuthi ngokombono we-CPU, ayikho imisebenzi ebingenziwa, kodwa okungenani i-I/O eyodwa ibiqhubeka. I-iowait imane nje iwuhlobo lwesikhathi sokungenzi lutho lapho kungahlelwa lutho.
Ngithola kanjani ukuthi iyiphi inqubo ebangela i-Iowait?
Ukuze ubone ukuthi i-I/O ibangela ukunensa kwesistimu ungasebenzisa imiyalo embalwa kodwa elula kakhulu i-unix command top . Kusuka kulayini we-CPU ungabona iphesenti lamanje le-CPU kokuthi I/O Wait; Uma iphezulu inombolo izinsiza ze-cpu zilinde ukufinyelela kwe-I/O.
Iyini i-Linux yokulayisha isilinganiso?
Isilinganiso sokulayisha isilinganiso somthwalo wesistimu kuseva ye-Linux isikhathi esichaziwe. Ngamanye amazwi, yisidingo se-CPU seseva esihlanganisa isamba sokusebenza kanye nezintambo zokulinda.
Kuyini ukusetshenziswa komyalo ophezulu ku-Linux?
umyalo ophezulu usetshenziselwa ukukhombisa izinqubo ze-Linux. Inikeza umbono wesikhathi sangempela oguqukayo wesistimu esebenzayo. Ngokuvamile, lo myalo ubonisa ulwazi olufingqiwe lwesistimu kanye nohlu lwezinqubo noma imicu okwamanje ephethwe yi-Linux Kernel.
Ngiyithola kanjani i-IOPS ku-Linux?
Ungahlola kanjani ukusebenza kwe-disk I/O ku-Windows OS ne-Linux? Okokuqala, thayipha umyalo ophezulu ku-terminal ukuze uhlole umthwalo kuseva yakho. Uma okukhiphayo kungagculisi, bheka isimo ukuze wazi isimo Sokufunda kanye Nokubhala IOPS kusigcinalwazi.
Yini i-bottleneck ku-Linux?
Ibhodlela lingenzeka kunethiwekhi yomsebenzisi noma indwangu yesitoreji noma ngaphakathi kwamaseva lapho kunombango owedlulele wezinsiza zeseva yangaphakathi, njengamandla okucubungula we-CPU, inkumbulo, noma i-I/O (okokufaka/okukhiphayo). Njengomphumela, ukugeleza kwedatha kwehla kujubane lephoyinti elincane kakhulu kumzila wedatha.
Ngingasho kanjani ukuthi yini ibhodlela lami le-CPU?
Ngenhlanhla, kunokuhlola okukodwa okulula ukuthola ukuthi ingabe uzoba nebhodlela le-CPU: Gada imithwalo ye-CPU ne-GPU ngenkathi udlala igeyimu. Uma umthwalo we-CPU uphezulu kakhulu (cishe amaphesenti angu-70 noma ngaphezulu) futhi uphakeme kakhulu kunomthwalo wekhadi levidiyo, khona-ke i-CPU ibangela ukuvinjelwa.
Siyini isikhathi sokulinda se-CPU ku-Linux?
Ku-CPU enikeziwe, isikhathi sokulinda se-I/O yisikhathi lapho leyo CPU yayingenzi lutho (okungukuthi ayizange yenze noma yimiphi imisebenzi) futhi kwaba khona okungenani umsebenzi owodwa wediski we-I/O wediski owawucelwe umsebenzi ohleliwe kuleyo CPU ( ngesikhathi ikhiqiza leso sicelo se-I/O).
Siyini isikhathi sokulinda se-CPU?
Ukulinda kwe-CPU kuyitemu ethize ebanzi futhi enama-nuances wenani lesikhathi umsebenzi okufanele ulindwe ukuze ufinyelele izinsiza ze-CPU. Leli gama lisetshenziswa kakhulu ezindaweni ezibonwayo, lapho imishini eminingi ebonakalayo iqhudelana ngezinsiza zokuphrosesa.
Iyini i-WA ku-Linux top?
us - Isikhathi esichithwa endaweni yomsebenzisi. sy - Isikhathi esichithwa endaweni ye-kernel. ni - Isikhathi esichithwe kuqhuba izinqubo zabasebenzisi ezinhle (Umsebenzi ochazwe kuqala) umazisi - Isikhathi esichithwe emisebenzini engenzi lutho. wa - Isikhathi esichithwa kulindile kuma-peripherals e-IO (isb.
Iyini i-WA ekuphumeni komyalo ophezulu?
%wa - leli yiphesenti le-iowait. Uma inqubo noma uhlelo lucela idatha ethile, luqala ngokuhlola izinqolobane zokucubungula (kunezinqolobane ezi-2 noma ezintathu lapho), bese liyaphuma lihlole inkumbulo, futhi ekugcineni lizoshaya idiski.