Qhov Tseem Ceeb Qhov txawv - Multiprocessing vs Multithreading
Ntau cov txheej txheem tab tom khiav ntawm ib lub sijhawm hauv lub khoos phis tawj. Lub operating system faib cov peev txheej rau cov txheej txheem thiab nws yog qhov tsim nyog los nce kev siv CPU. Multiprocessing thiab multithreading tuaj yeem cuam tshuam kev ua haujlwm ntawm lub cev. Qhov sib txawv tseem ceeb ntawm kev ua haujlwm ntau thiab ntau lub xov tooj yog tias, nyob rau hauv multiprocessing, ntau cov txheej txheem tau khiav ib txhij siv ob los yog ntau tshaj processors whereas, nyob rau hauv multithreading, ntau threads nyob rau hauv ib tug txheej txheem yog khiav concurrently. Kab lus no tham txog qhov sib txawv ntawm multiprocessing thiab multithreading.
Kev ua ntau yam yog dab tsi?
Multiprocessing yog khiav ntau cov txheej txheem siv ob lossis ntau dua processors ib txhij. Muaj ntau hom multiprocessing mechanisms. Lawv yog Symmetric Multiprocessing thiab Asymmetric Multiprocessing.
Daim duab 01: Symmetric Multiprocessing
In Symmetric Multiprocessing, txhua tus processor muaj lawv tus kheej cache thiab txhua tus txheej txheem txuas nrog siv lub npav sib koom. Raws li muaj lub cim xeeb sib koom, tag nrho cov processors sib koom tib lub cim xeeb chaw nyob. Ib qho kev txwv ntawm txoj kev no yog thaum tus naj npawb ntawm cov processors nce nws yuav qeeb hauv kev nkag mus rau lub cim xeeb loj. Cov txheej txheem pub dawb los khiav ib qho txheej txheem ntawm qhov system.
In Asymmetric multiprocessing, processors ua raws li tus tswv- qhev architecture. Master processor faib cov txheej txheem rau qhev processors.
Dab tsi yog Multithreading?
Ntau cov txheej txheem tab tom khiav ntawm lub khoos phis tawj tib lub sijhawm. Cov txheej txheem yog ib qho kev pab cuam hauv kev ua tiav. Ua haujlwm hauv MS Word tuaj yeem suav tias yog txheej txheem. Thaum siv MS Word, cov qauv sau ntawv thiab kev sau ntawv raug kuaj xyuas. Nws yog subprocess lossis subtask. Nyob rau hauv tas li ntawd, cov txheej txheem tseem ceeb yog muab faib ua subprocesses. Cov subprocesses yog units ntawm cov txheej txheem thiab lawv hu ua threads. Yog li ntawd, tus txheej txheem zoo ib yam li txoj haujlwm thiab xov yog ib chav tsev ntawm tus txheej txheem.
Ib xov muaj xws li qhov program txee, xov txee, npe teev, xov ID, thiab pawg. Tsim cov txheej txheem rau txhua txoj haujlwm tsis yog ib txoj hauv kev zoo. Yog li ntawd, ib tug txheej txheem muab faib ua ntau threads. Ntau cov xov no tau khiav ntawm cov txheej txheem tib lub sijhawm. Lub tswvyim no hu ua 'Multi-threading'.
Daim duab 02: Txheej txheem ntau yam
Muaj qee qhov zoo hauv Multi-threading. Txhua txoj xov hauv ib txoj kev sib koom tib cov lej, cov ntaub ntawv thiab cov peev txheej. Nws tsis yog qhov tsim nyog los faib cov peev txheej rau txhua txoj xov sib cais yog li kev siv threads yog kev lag luam. Yog tias ib txoj xov tsis ua haujlwm, qhov ntawd yuav tsis cuam tshuam rau tus txheej txheem. Cov xov yog lub teeb yuag thiab siv qhov tsawg kawg nkaus ntawm cov peev txheej piv nrog cov txheej txheem.
Dab tsi yog qhov zoo sib xws ntawm Multiprocessing thiab Multithreading?
- Ob txoj hauv kev tuaj yeem nce kev siv CPU.
- Ob txoj hauv kev tuaj yeem ua kom suav nrawm.
Qhov txawv ntawm Multiprocessing thiab Multithreading yog dab tsi?
Multiprocessing vs Multithreading |
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| Multiprocessing yog los ua ntau yam txheej txheem uas siv ob lossis ntau txheej txheem ua ke los txhim kho qhov kev ua tau zoo. | Multithreading yog txhawm rau ua ntau cov xov hauv cov txheej txheem ib txhij los txhim kho kev ua haujlwm. |
| Kev ua tiav | |
| Nyob rau hauv Multiprocessing, ntau yam txheej txheem yog khiav concurrently. | Nyob rau hauv Multithreading, ntau threads nyob rau hauv ib tug txheej txheem yog khiav concurrently. |
| Requirements | |
| Multiprocessing xav tau kev pab ntxiv. | Multithreading tsis xav tau ntau yam kev pab; yog li ntawd, nws yog kev lag luam ntau dua. |
Summary – Multiprocessing vs Multithreading
Multiprocessing thiab multithreading tuaj yeem cuam tshuam rau lub computer ua haujlwm. Qhov sib txawv ntawm Multiprocessing thiab Multithreading yog tias, nyob rau hauv multiprocessing, ntau cov txheej txheem yog khiav concurrently siv ob los yog ntau tshaj processors thiab, nyob rau hauv multithreading, ntau threads nyob rau hauv ib tug txheej txheem yog khiav concurrently. Txhawm rau nce kev ceev thiab kev siv CPU, ntau txoj xov tuaj yeem siv rau ntawm ntau tus txheej txheem.
Download PDF Version of Multiprocessing vs Multithreading
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline hom phiaj raws li daim ntawv ceeb toom. Thov download PDF version ntawm no Qhov txawv ntawm Multiprocessing thiab Multithreading
