(n.) Kuj tseem hu ua lub tsheb npav-snooping raws tu qauv, tus txheej txheem rau kev tuav cache coherency cache coherency Hauv computer architecture, cache coherence yog qhov sib xws ntawm cov ntaub ntawv sib koom ua ke uas xaus rau hauv ntau lub zos caches … Cache coherence yog npaj los tswj cov kev tsis sib haum xeeb los ntawm kev tswj xyuas qhov sib koom ua ke ntawm cov ntaub ntawv muaj nuj nqis hauv ntau lub caches. https://en.wikipedia.org › wiki › Cache_coherence
Cache coherence - Wikipedia
hauv symmetric multiprocessing ib puag ncig. Nyob rau hauv ib tug snooping system, tag nrho cov caches ntawm lub tsheb npav saib (los yog snoop) lub tsheb npav los txiav txim seb lawv puas muaj ib daim qauv ntawm cov ntaub ntawv uas tau thov nyob rau hauv lub tsheb npav.
tsheb npav snooping siv rau dab tsi?
Tsheb npav snooping lossis tsheb npav sniffing yog ib lub tswv yim uas tus tswj kev sib koom ua ke (snooper) hauv lub cache (snoopy cache) saib xyuas lossis snoops cov tsheb thauj mus los, thiab nws lub hom phiaj yog los tuav lub cache coherency nyob rau hauv faib faib kev nco systems.
Dab tsi yog snooping raws tu qauv hauv computer architecture?
Snooping raws tu qauv ua kom nco cache coherency nyob rau hauv symmetric multiprocessing (SMP) systems Txhua processor cache ntawm lub tsheb npav saib, los yog snoops, lub tsheb npav los xyuas seb nws puas muaj ib daim qauv ntawm ib tug thov cov ntaub ntawv thaiv. Ua ntej tus processor sau cov ntaub ntawv, lwm cov ntaub ntawv cache processor yuav tsum tsis raug cai lossis hloov kho.
Snoop in Chi yog dab tsi?
Snoop txaus ntshai: CHI spec tsis pub snoops raug kaw los ntawm qhov kev thov uas twb muaj lawm. Yog tias kev hloov pauv tseem tos cov lus teb rau qhov kev thov xa mus rau nqes (piv txwv li peb tau xa ReadShared thiab tab tom tos cov ntaub ntawv teb) peb yuav tsum lees txais thiab ua raws li snoop.
snoop thov yog dab tsi?
Feem ntau, cov txheej txheem thaum ntxov siv cov npe raws li cov txheej txheem uas cov npe yuav khaws cov ntaub ntawv raug qhia thiab cov neeg sib koom. Hauv snoopy raws tu qauv, kev thov kev lag luam (los nyeem, sau, lossis hloov kho) raug xa tawm mus rau txhua tus txheej txheem Txhua tus txheej txheem snoop qhov kev thov thiab teb kom tsim nyog.