Messages in this thread | | | Date | Fri, 28 Mar 2008 11:05:11 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: [PATCH 3 of 4] sparsemem: reduce i386 PAE section size |
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Dave Hansen wrote: > > Developers should probably learn the tradeoffs before they go start > poking around in code and sending patches. ;) >
I don't know any better way of learning the tradeoffs than by poking around and sending patches ;)
> BTW, the current 1G sections were picked because all the hardware we > knew of at the time had 512MB dimms that had to be added in pairs. So, > we didn't ever have physical hotplug of less than that. >
I guessed it was something like that. Even for my case 1G isn't too bad. It was bad when I was trying to hotplug early and it was having allocation failures in the bootmem allocator, but I think it should be OK now. On the other hand, when you're hotplugging new memory is precisely when you don't want to be allocating lots of new memory...
J
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