Ukulayisha iseva? umyalo ophezulu/ukusetshenziswa kwe-CPU/ukulayisha okumaphakathi kwendlela yokubala

lapho sifunda ukusebenzisaLinux Iseva ye-VPS kuyakha iwebhusayithiNgemuva kwalokho, kuyadingeka ukuqonda incazelo yesilinganiso somthwalo wezilinganiso ezihlukahlukene zomthwalo, ngoba sidinga ukusebenzisatopUmyalo uqonda isimo sokuqedwa sohlelo futhi unaka izinguquko zesikhathi sangempela zokuguquguquka.

Ukuze uqonde lokhu, kubalulekile ukuqonda izincazelo ezilandelayo eziguquguqukayo.

Incazelo enemininingwane yesilinganiso sokulayisha komyalo ophezulu

Nansi imiyalelo enemininingwane yokuthi isetshenziswa kanjani ▼

top - 01:06:48 up 1:22, 1 user, load average: 0.06, 0.60, 0.48
Tasks: 29 total, 1 running, 28 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.3% us, 1.0% sy, 0.0% ni, 98.7% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 191272k total, 173656k used, 17616k free, 22052k buffers
Swap: 192772k total, 0k used, 192772k free, 123988k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1379 root 16 0 7976 2456 1980 S 0.7 1.3 0:11.03 sshd
14704 root 16 0 2128 980 796 R 0.7 0.5 0:02.72 top
1 root 16 0 1992 632 544 S 0.0 0.3 0:00.90 init
2 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
3 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0

• Imigqa yokuqala emi-5 yendawo yezibalo yizibalo zesistimu yonke.
• Umugqa 1 wulwazi lomugqa wemisebenzi, ngeuptimeUmphumela wokwenza womyalo uyafana.

Okuqukethwe yilokhu okulandelayo:

• 01:06:48 Isikhathi samanje
• up 1:22 Isikhathi sokusebenza sesistimu ngefomethi yamahora:amaminithi
• Umsebenzisi ongu-1 Inombolo yabasebenzisi abangene manje
• isilinganiso sokulayisha: 0.06, 0.60, 0.48 Umthwalo wesistimu, okuyisilinganiso sobude bomugqa womsebenzi.
• Amanani amathathu angamanani aphakathi ukusuka kumzuzu ongu-3, imizuzu emi-1, nemizuzu eyi-5 edlule kuze kube manje.
• Ulayini wesi-2 nowesi-3 uyinqubo nolwazi lwe-CPU.
•  

Uma kunama-CPU amaningi, lokhu okuqukethwe kungase kudlule imigqa emi-2.Okuqukethwe kungokulandelayo:

• Imisebenzi: 29 ingqikithi yenani lezinqubo
• 1 esebenzayo Inombolo yezinqubo ezisebenzayo
• 28 ukulala Inani lezinqubo zokulala
• 0 imisiwe Inani lezinqubo ezimisiwe
• 0 inombolo ye-zombie yezinqubo ze-zombie
• Ama-Cpu: 0.3% us Amaphesenti e-CPU athathwe yisikhala somsebenzisi
• 1.0% sy Iphesenti le-CPU elithathwe yisikhala se-kernel
• 0.0% ni Iphesenti le-CPU elithathwa yizinqubo okubalulekile kwazo okushintshile endaweni yenqubo yomsebenzisi
• 98.7% iphesenti le-CPU engenzi lutho
• 0.0% wa Iphesenti lesikhathi se-CPU elilinde okokufaka nokuphumayo
• 0.0% sawubona
• 0.0%si

Okulandelayo yimigqa emibili yokugcina yolwazi lwenkumbulo:

• I-Mem: 191272k ingqikithi yenkumbulo yomzimba
• I-173656k isetshenziswe inkumbulo yomzimba ephelele esetshenzisiwe
• 17616k inkumbulo ephelele yamahhala
• 22052k amabhafa Inani lenkumbulo elisetshenziswa njengenqolobane ye-kernel
• Shintsha: 192772k isamba sendawo yokushintshana
• 0k isetshenziswe indawo yokushintshanisa ephelele esetshenzisiwe
• 192772k indawo yamahhala yokushintshanisa yamahhala
• 123988k ingqikithi yendawo yokushintsha egcinwe kunqolobane.

Okuqukethwe kwememori kushintshaniswa endaweni yokushintshana bese kubuyela kumemori, kodwa indawo eshintshiwe esetshenzisiwe ayikabhalwa ngaphezulu.

Leli nani liwusayizi wendawo yokushintshana lapho okuqukethwe sekuvele kukhona kumemori.

Uma inkumbulo ehambisanayo ishintshwa futhi, akusadingeki ukuthi ubhalele endaweni yokushintshana.

Ulwazi oluningiliziwe mayelana nenqubo, oluboniswa ngezansi kwendawo yezibalo endaweni ngayinye yolwazi lwenqubo.

Okokuqala, ake siqonde ukuthi ikholomu ngayinye isho ukuthini.

ikholomu incazelo yegama

• I-id yenqubo ye-PID
• I-id yenqubo yomzali ye-PPID
• RUSER Igama lomsebenzisi langempela
• I-UID I-id yomsebenzisi yomnikazi wenqubo
• USER igama lomsebenzisi lomnikazi wenqubo
• GROUP igama leqembu lomnikazi wenqubo
• TTY Igama letheminali lapho inqubo iqalwe khona.Izinqubo ezingaqalwanga kutheminali ziboniswa njenge ?
• Okubalulekile kwe-PR
• NI Inani elihle.Amanani angalungile akhombisa ukubeka kuqala okuphezulu, amanani amahle akhombisa ukubeka kuqala okuphansi
• P I-CPU yokugcina esetshenzisiwe, enenjongo kuphela endaweni yama-CPU amaningi
• %CPU Amaphesenti esikhathi se-CPU asetshenzisiwe kusukela ekubuyekezweni kokugcina
• TIME Isamba sesikhathi se-CPU esisetshenziswe inqubo, ngamasekhondi
• TIME+ Isikhathi esiphelele se-CPU esisetshenziswe inqubo, kumasekhondi angu-1/100
• %MEM Iphesenti lememori ebonakalayo esetshenziswa inqubo
• Isamba senani lememori ebonakalayo esetshenziswa inqubo ye-VIRT, ku-kb. VIRT=SWAP+RES
• Usayizi wememori ebonakalayo esetshenziswa inqubo ye-SWAP ezoshintshwa, ngo-kb.
• Usayizi wememori ebonakalayo esetshenziswa inqubo ye-RES futhi ayishintshiwe, ngo-kb. RES=CODE+DATA
• IKHODI Usayizi wememori ebonakalayo esetshenziswa ikhodi esebenzisekayo, ku-kb
• IDATHA Usayizi wememori ebonakalayo ethathwe enye ingxenye ngaphandle kwekhodi esebenzisekayo (ingxenye yedatha + isitaki), ku-kb
• Usayizi wenkumbulo owabiwe we-SHR, ku-kb
• amaphutha ekhasi le-nFLT
• Inani lamakhasi ashintshiwe kusukela ekubhaleni kokugcina kwe-nDRT.
• S Isimo senqubo.
• D = isimo sokulala esingaphazamiseki
• R = run
• S = ukulala
• T=ithrekhi/stop
• Z = inqubo ye-zombie
• COMMAND igama lomyalo/umugqa womyalo
• I-WCHAN Uma inqubo ilele, bonisa igama lomsebenzi wesistimu yokulala
• Ihlaba umkhosi amafulegi omsebenzi, bhekisela ku-sched.h

imiyalo yokulungisa iphutha ye-linux

Bukela itopNgemuva kwesimo esivezwe ngumyalo, sidinga ukuthuthukiswa ngokusho kwawo, kodwatopUmyalo ubonisa ukubonakala kuphela, ukuze sikwazi ukudlulaiostatnomavmstatOda ukuqashelwa okwengeziwe.

vmstat ukuze ubuke umthwalo wesistimu

vmstat
procs -------memory-------- ----swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 100152 2436 97200 289740 0 1 34 45 99 33 0 0 99 0

abahlinzeki

• Ikholomu engu-r ibonisa inani lezinqubo ezisebenzayo futhi ezilinde ucezu lwesikhathi lwe-CPU. Uma likhulu kuno-1 isikhathi eside, kusho ukuthi i-CPU ayanele futhi i-CPU idinga ukukhushulwa.
• Ikholomu engu-b ibonisa inani lezinqubo ezilinde izinsiza, njengokulinda i-I/O, noma ukushintshanisa inkumbulo, njll.

I-cpu ikhombisa isimo sokusetshenziswa se-cpu

• Ikholomu ye-us ibonisa iphesenti lesikhathi se-CPU esichithwe kumodi yomsebenzisi. Uma inani lethu liphezulu uma kuqhathaniswa, kusho ukuthi inqubo yomsebenzisi idla isikhathi esiningi se-CPU, kodwa uma ingaphezu kuka-50% isikhathi eside, kuyadingeka ukuthi ucabangele ukuthuthukisa uhlelo lomsebenzisi.
• Ikholomu ye-sy ibonisa iphesenti lesikhathi se-cpu esichithwa inqubo ye-kernel.Lapha, inani eliyireferensi lethu + sy lingu-80%. Uma thina + sy sikhulu kuno-80%, kusho ukuthi kungase kube khona i-CPU enganele.
• Ikholomu ye-wa ibonisa iphesenti lesikhathi se-CPU esithathwe ukulinda kwe-IO.
• Inani eliyisethenjwa lika-wa lapha ngu-30%. Uma u-wa edlula u-30%, kusho ukuthi ukulinda kwe-IO kubucayi.Lokhu kungase kubangelwe inombolo enkulu yokufinyelela okungahleliwe kudiski, noma ukuvinjwa komkhawulokudonsa wediski noma ukufinyelela kwediski. isilawuli (ikakhulukazi vimba imisebenzi).
• Ikholomu ye-id ibonisa iphesenti lesikhathi lapho i-cpu ingenzi lutho.

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