Iowait luhlobo nje lwexesha elingasebenziyo xa kungekho nto inokucwangciswa. Ixabiso linokuba luncedo okanye lingabi luncedo ekuboniseni ingxaki yokusebenza, kodwa liyamxelela umsebenzisi ukuba inkqubo ayisebenzi kwaye ingathatha umsebenzi omninzi.
Kutheni i-iowait iphezulu iLinux?
I/O linda kunye nokusebenza kweseva yeLinux
Ngaloo ndlela, i-iowait ephezulu kuthetha ukuba i-CPU yakho ilinde kwizicelo, kodwa kuya kufuneka uphande ngakumbi ukuze uqinisekise umthombo kunye nesiphumo. Ngokomzekelo, ukugcinwa kweseva (i-SSD, i-NVMe, i-NFS, njl.) iphantse ihlale icotha kunokusebenza kwe-CPU.
How do I know if my iowait is high Linux?
Ukuchonga ukuba i-I/O ibangela ukucotha kwenkqubo ungasebenzisa imiyalelo emininzi kodwa eyona ilula kukuba umphezulu womyalelo we-unix . Ukusuka kumgca we-CPU (s) ungabona ipesenti yangoku ye-CPU kwi-I/O Linda; Okukhona liphezulu inani izibonelelo ezininzi cpu elinde I/O ufikelelo.
How much high is iowait?
Eyona mpendulo ingcono endinokukunika yona kukuba "i-iowait iphezulu kakhulu xa ichaphazela ukusebenza." Yakho"I-50% yexesha le-CPU lichithwa e-iowait ” imeko ingalunga ukuba une I/O eninzi kunye nomnye umsebenzi omncinci ekufuneka wenziwe nje ukuba idatha ibhalwa kwidisk “ngokukhawuleza ngokwaneleyo”.
How do I get Iowait on Linux?
Ukuba awunawo “iostat” umyalelo okhoyo, ungafuna ukufaka ipakethe “sysstat”- ku-Ubuntu, rhoqo oku kusenziwa ngomyalelo othi “apt-get install sysstat” nakwi-Centos, oku kunokwenziwa. nge "yum install sysstat". Umyalelo ngqo endiwucebisayo uya kuba “iostat -mxy 10” — uze ulinde imizuzwana eyi-10.
Ubalwa njani umthwalo kwiLinux?
Kwi-Linux, i-avareji yomthwalo (okanye uzame ukuba) "i-avareji yomthwalo wenkqubo", yenkqubo iyonke, ukulinganisa inani lemisonto esebenzayo kwaye elindele ukusebenza (i-CPU, idiski, izitshixo ezingenakuphazamiseka). Ibekwe ngokwahlukileyo, ilinganisa inani lemisonto engasebenziyo ngokupheleleyo.
What is the normal IO wait in Linux?
Percentage of time that the CPU or CPUs were idle during which the system had an outstanding disk I/O request. Therefore, %iowait means that from the CPU point of view, no tasks were runnable, but at least one I/O was in progress. iowait is simply a form of idle time when nothing could be scheduled.
Yintoni i-avareji yomthwalo weLinux?
Umyinge womthwalo ngu umndilili womthwalo wenkqubo kumncedisi we Linux kangangexesha elithile. Ngamanye amazwi, yimfuno ye-CPU yomncedisi equka isixa sokubaleka kunye nemisonto yokulinda. … La manani yi-avareji yomthwalo wesistim kwithuba lemizuzu enye, emihlanu, kunye ne-15.
How do I check iostat?
Umyalelo wokubonisa isixhobo esithile kuphela iostat -p DEVICE (Apho i-DEVICE iligama lokuqhuba-elifana ne-sda okanye i-sdb). Ungadibanisa olo khetho ngo -m ukhetho, njenge iostat -m -p sdb, ukubonisa ubalo lwe drive enye kwifomati efundeka ngakumbi (Figure C).
Yintoni ebangela iowait?
iowait yiyo ixesha apho iprosesa/abaqhubekeki belindile (okt ikwimo yokungenzi nto kwaye akenzi nto), apho enyanisweni bekukho izicelo zedisk ze-I/O. Oku ngokuqhelekileyo kuthetha ukuba izixhobo zebhloko (okt iidiski ezibonakalayo, hayi inkumbulo) zicotha kakhulu, okanye zihluthiswe ngokulula.
Yintoni ixesha lokulinda le-CPU?
Ukulinda kwe-CPU ligama elithile elibanzi kunye nelinentsingiselo ixesha apho umsebenzi kufuneka ulinde ukufikelela kwimithombo ye-CPU. Eli gama lisetyenziswa ngokuxhaphakileyo kwimo engqongileyo ebonakalayo, apho oomatshini abaninzi benyani bakhuphisana ngezixhobo zokusebenza.
Uwusebenzisa njani umyalelo we-iostat kwiLinux?
Qaphela: I-10 Linux iostat Umyalelo wokuXela i-CPU kunye ne-I/O Statistics zidweliswe ngezantsi:
- Iostat: Fumana ingxelo kunye nezibalo.
- iostat -x: Bonisa iinkcukacha ezithe vetshe ngeenkcukacha-manani.
- iostat -c: Bonisa kuphela ubalo lwecpu.
- iostat -d: Bonisa kuphela ingxelo yesixhobo.
- iostat -xd: Bonisa ubalo lwe-I/O olwandisiweyo lwesixhobo kuphela.