>> We are iterating over all nodes in nr_free_zone_pages(). Because the >> fallback zonelists contain all nodes in the system, and we walk all >> the zonelists, we're counting memory multiple times (once for each >> node). This caused us to make a size estimate of 32GB for an 8GB >> AMD64 box, which makes all the dirty ratio calculations, etc incorrect. >> >> There's still a further bug to fix from e820 holes causing overestimation >> as well, but this fix is separate, and good as is, and fixes one class >> of problems. Problem found by Badari, and tested by Ram Pai - thanks! > > Alas my non-NUMA EMT64 box still gets it wrong. > > nr_free_pagecache_pages() is still returning 1572864 on a 4G box.
Yeah, it will do - is the e820 bug I mentioned above. Patch is half-written, will finish it off ASAP, but I'll be out today ;-( M. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
