2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Hauv computer science, tus nqi-monotonic scheduling (RMS) yog a qhov tseem ceeb ntawm kev ua haujlwm algorithm siv nyob rau hauv lub sijhawm ua haujlwm tiag tiag (RTOS) nrog cov chav kawm zoo li qub. Qhov tseem ceeb ntawm qhov tseem ceeb yog muab raws li lub voj voog lub sijhawm ntawm txoj haujlwm, yog li lub sijhawm luv luv ua rau muaj qhov tseem ceeb ntawm txoj haujlwm siab dua.
Yuav ua li cas qhov kev xav tau ua hauv tus nqi monotonic teem sijhawm?
Kev xav nrog tus nqi monotonic tsom xam yuav tsum muaj cov kev xav hauv qab no [4]: • Kev hloov ua haujlwm yog tam sim ntawd. relinquish CPU tsuas yog thaum ua tiav. Hnub kawg ntawm kev ua haujlwm yog ib txwm nyob rau thaum pib ntawm lub sijhawm tom ntej. txoj haujlwm tseem ceeb yeej tsis ua tiav thaum txoj haujlwm tseem ceeb dua yog npaj ua tiav.
Dab tsi yog qhov tseeb ntawm tus nqi monotonic teem sijhawm?
Rate monotonic scheduling yog txoj cai tswj xyuas qhov tseem ceeb tshaj plaws uas qhov ntau zaus (1 / lub sijhawm) ntawm txoj haujlwm, qhov siab dua yog qhov tseem ceeb. Txoj hauv kev no tuaj yeem siv tau rau hauv txhua qhov kev khiav hauj lwm uas txhawb nqa qhov tseem ceeb ntawm cov txheej txheem preemptive, xws li DSP/BIOS thiab VxWorks.
laxity hauv RTOS yog dab tsi?
Laxity: Qhov txawv ntawm lub sijhawm kom txog rau thaum lub sijhawm ua haujlwm tiav thiab nws cov sijhawm ua haujlwm tseem tshuav. ib tug laxity yog muab rau txhua txoj hauj lwm nyob rau hauv lub system thiab yam tsawg kawg nkaus laxity hauj lwm yog ua ntej.
RMA yog dab tsi hauv qhov system embedded?
Tus tus nqi monotonic algorithm (RMA) yog tus txheej txheemtxhawm rau muab qhov tseem ceeb ruaj khov rau cov haujlwm kom ua kom lawv "sedulability." Kev teeb tsa ua haujlwm raug txiav txim siab teem sijhawm yog tias txhua txoj haujlwm ua tau raws li lub sijhawm kawg txhua lub sijhawm.
Pom zoo:
Tus neeg teem sijhawm li cas hauv qab no cuam tshuam rau qib ntawm ntau qhov programming?
Long-Term Scheduler tseem hu ua Job Scheduler thiab yog lub luag haujlwm los tswj cov Degree ntawm Multiprogramming piv txwv li tag nrho cov txheej txheem uas muaj nyob rau hauv lub xeev npaj. Yog li, tus neeg teem caij mus sij hawm ntev txiav txim siab seb cov txheej txheem twg yuav raug tsim los muab tso rau hauv lub xeev npaj.
Tus lej twg yog hafnium ntawm lub sijhawm teem sijhawm?
Lub caij yog tus lej 72 nyob rau hauv lub sijhawm, thiab hu ua hafnium. Hafnium yog dab tsi hauv lub rooj zaum? Hafnium (Hf), tshuaj element (atomic naj npawb 72), hlau ntawm pab pawg 4 (IVb) ntawm lub sij hawm lub sij hawm. Nws yog ib qho hlau nplaum nrog lub ci ntsa iab silvery lustre.
Lub sijhawm nyob qhov twg ntawm lub sijhawm teem sijhawm?
kab kab rov tav ntawm lub rooj ntu ntu yog hu ua ntu ntu. Lub sijhawm nyob rau ntawm lub sijhawm nyob qhov twg? Ib lub sijhawm yog kab kab rov tav ntawm lub rooj ntu ntu. Muaj xya lub sij hawm nyob rau hauv lub sij hawm ntawm lub sij hawm, nrog txhua tus pib ntawm sab laug.
Nyob rau hauv ntau lub sijhawm teem caij?
Ib theem ntau kab kev teem caij algorithm muab cov kab npaj npaj rau hauv ob peb kab sib cais. Cov txheej txheem raug xa mus tas li rau ib kab, feem ntau raws li qee yam khoom ntawm cov txheej txheem, xws li kev nco loj, txheej txheem tseem ceeb, lossis hom txheej txheem.
Kuv puas tuaj yeem teem sijhawm teem caij txhaj tshuaj tiv thaiv covid?
Yog tias nws yog 48 teev lossis tsawg dua ua ntej koj teem sijhawm, koj tuaj yeem thim lossis rov teem sijhawm los ntawm kev ua raws li qhov txuas hauv daim ntawv ceeb toom uas koj tau txais los ntawm ntawv lossis email. Yuav ua li cas yog tias koj tsis txhaj tshuaj tiv thaiv COVID-19 thib ob?
