Heck! At least now we know why the effect of a slow NVRAM is so
amplified. Why on earth does the '/dev'/nvram' need to check the
checksum *each* time.
I'm not sure we can avoid the lseek() overhead, though I guess if this
is the way the 'nvram' driver is working, it *would* actually be cheaper
to read the whole NVRAM block in a single read.
** Also affects: linux-source-2.6.22 (Baltix)
Importance: Undecided
Status: Unconfirmed
** Changed in: linux-source-2.6.22 (Baltix)
Status: Unconfirmed => Rejected
** Also affects: linux-source-2.6.22 (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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thinkpad-keys on ThinkPad X60* uses a large amount of CPU
https://bugs.launchpad.net/bugs/45404
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