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Single kernel image for UP & SMPSingle kernel image for UP & SMPPosted Dec 22, 2005 23:30 UTC (Thu) by renox (subscriber, #23785)In reply to: Single kernel image for UP & SMP by zdzichu Parent article: SMP alternatives
Well, as some others have remarked for this to work you have to remember which (spin)locks are taken, even on a UP processor thus loosing some performance in UP.
I think that even a minimal loss would be a hard sell to kernel developpers considering how little this UP<->SMP feature is going to be used..
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Single kernel image for UP & SMP Posted Dec 25, 2005 19:59 UTC (Sun) by efexis (guest, #26355) [Link] There's no reason why you would have to do that (I won't repeat my last post). The speed differences would be down to the processor having to deal with the few noop's, eating up slightly more L1/L2 cache, and keeping in memory (and the kernel image file itself) - for those who worry about that - code for both scenario's.
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