On Tue, 21 Mar 2000, Erwin Rol wrote:
What times are we talking about ?
really slow!
Could you give any benchmarks ? like how long it takes from turning on the computer until init is called ?
right now the gunzip step takes up to ONE MINUTE. I've got something set up wrong, and I hear that there is a needed step in the PII to make it "run fast". It seems to be running at 8086 speeds ...
It would be _very_ interesting to have a (custom) init running within 2 second or less after powerup, could you see this happening ?
I think it is possible.
The big issue is bandwidth to the NVRAM. You need to suck 512K out of the NVRAM. If the NVRAM has 1 MB/sec bandwidth, this step takes 1/2 second. If we had 16 MB/second nvram, then obviously we're faster.
Sad to say, there's only an 8-bit path to NVRAM. And flash is slow. This is a long-term problem.
The faster the NVRAM, the better.
(of course that will exclude slow starting things like SCSI controlers and the like, and no auto probing , everything preconfigured in the kernel)
From what I'm seeing the scsi is slow but not terrible. The scsi bioses
stink, though.
ron p.s. my goal for a cluster node is cold boot in 7 seconds, reboot in 5 seconds. I think it's quite possible.
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