Main CPU- I/O CPU interaction
From: tony osborne
Date: Sun Jan 02 2005 - 19:48:16 EST
Hello,
I wish to be personally CC'ed the answers/comments posted to the list in
response to this post .
The I/O devices are equipped with dedicated processor to free the main CPU
from doing the low level I/O operations. However, if i am editing and
updating a big size file and i want to save
it afterwards, i notice my PC getting blocked while saving the file which
theoritically should NOT happen as it is up to the I/O device processor and
not the main CPU to save the data into the disk; the main CPU could switch
to another process after giving the high level command -save-to the device
processor; so why the main CPU is blocked while saving such big size files
thanks
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