Ua ntej tuaj ua ntej ua haujlwm teem caij ua haujlwm hais tias cov txheej txheem uas thov CPU ua ntej yog faib CPU ua ntej. Nws yog siv los ntawm kev siv FIFO queue.
Lub sijhawm teem sijhawm twg yog faib CPU ua ntej rau cov txheej txheem uas thov CPU ua ntej FCFS teem sijhawm luv tshaj plaws txoj haujlwm teem caij ua ntej LIFO teem sijhawm?
Nyob deb ntawm qhov yooj yim thiab yooj yim tshaj plaws CPU teem caij algorithm yog thawj-los, thawj zaug (FCFS) teem caijtxheej txheem. Nrog rau txoj kev no, cov txheej txheem uas thov CPU ua ntej, cov txheej txheem tau muab faib rau CPU ua ntej. Kev ua tiav ntawm FCFS txoj cai yog tswj tau yooj yim nrog FIFO queue.
Lub sijhawm teem sijhawm twg los muab CPU rau cov txheej txheem nrog qhov tseem ceeb tshaj plaws?
Priority Scheduling yog ib txoj kev teem sij hawm uas yog ua raws li qhov tseem ceeb. Hauv qhov algorithm no, tus teem sijhawm xaiv cov haujlwm ua haujlwm raws li qhov tseem ceeb. Cov txheej txheem uas muaj qhov tseem ceeb dua yuav tsum tau ua ua ntej, hos cov hauj lwm uas muaj qhov tseem ceeb sib npaug yog ua los ntawm ib puag ncig-robin lossis FCFS hauv paus.
Qhov algorithm xaiv thawj txoj haujlwm rau CPU?
txoj haujlwm luv tshaj thawj zaug teem sijhawm algorithm xaiv cov txheej txheem tos nrog lub sijhawm ua haujlwm tsawg tshaj plaws. Yog li, hauv SLF, cov haujlwm luv tshaj plaws tau ua tiav ua ntej ua qhov kev siv CPU siab tshaj plaws. Yog li, cov haujlwm ntau tshaj plaws tau ua tiav. Tsawg kawg tos thiab tig ib ncig ntawm lub sijhawm piv nrog rau lwm qhov kev teem caij algorithms.
Dab tsi yog txoj haujlwm ntev tshaj plaws ua ntej?
Longest Job First (LJP) is a non-preemptive scheduling algorithm. Qhov algorithm no yog raws li lub sijhawm tawg ntawm cov txheej txheem. Cov txheej txheem tau muab tso rau hauv qhov npaj tos raws li lawv lub sijhawm tawg xws li, hauv qhov kev txiav txim qis ntawm lub sijhawm tawg.
