Write-back/through method?
I have no idea what that means?I think ,it's about CPU!?
I searched in Mike Meyers book,5th edition and I didn't find anything about it.
Write back/through-found it in the test on this site.
I searched in Mike Meyers book,5th edition and I didn't find anything about it.
Write back/through-found it in the test on this site.
Mess with the best,Die like the rest!
Comments
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aznluvsmc
Member Posts: 47 ■■□□□□□□□□
This has to do with caching methods of the CPU. In a write-back cache, the CPU will swap the data between it's L1/L2 cache and RAM. In a
write-through cache, the CPU will swap the data with a permanenet storage medium instead such as a hard drive. Hence it is writing through the RAM to get to the hard drive.
Write-back example:
CPU L1/L2 cache
> RAM Hard drive
Write through example:
CPU L1/L2 cache
RAM
> Hard drive
= data
> = point of write -
rono
Member Posts: 121 ■■■□□□□□□□
ok..thank you!
Nice and simple explanation!Mess with the best,Die like the rest! -
dcgreen7
Member Posts: 3 ■□□□□□□□□□
Write Through cache sends data directly to RAM, even if it means being delayed by a wait state. Write Back cache stores data and writes it to RAM later. (Meyers 4th edition, pages 109-110) Both types work with the CPU's L1 or L2 cache.
Neither has anything to do with virtual memory.
Dave