On 01/17/2013 01:04 PM, paul.sz...@sydney.edu.au wrote: >>> On my large machine, 'free' fails to show about 2GB memory ... >> You probably have a memory hole. ... >> The e820 map (during early boot in dmesg) or /proc/iomem will let you >> locate your memory holes. > > Now that my machine is running an amd64 kernel, 'free' shows total Mem > 65854128 (up from 64447796 with PAE kernel), and I do not see much > change in /proc/iomem output (below). Is that as should be?
Yeah, that all looks sane. Your increased memory is because your 64GB machine had some of its memory mapped _above_ the 64GB physical memory limit that PAE has. /proc/iomem is generally just a dump of what the hardware *is*, so it shouldn't change between kernels. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
