Dear Tony, > -----Original Message----- > From: Luck, Tony [mailto:tony.luck@xxxxxxxxx] > Sent: Friday, October 23, 2015 8:27 AM > To: Kamezawa, Hiroyuki/亀澤 寛之; Izumi, Taku/泉 拓; linux-kernel@xxxxxxxxxxxxxxx; linux-mm@xxxxxxxxx > Cc: qiuxishi@xxxxxxxxxx; mel@xxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx; Hansen, Dave; matt@xxxxxxxxxxxxxxxxxxx > Subject: RE: [PATCH] mm: Introduce kernelcore=reliable option > > > I think /proc/zoneinfo can show detailed numbers per zone. Do we need some for meminfo ? > > I wrote a little script (attached) to summarize /proc/zoneinfo ... on my system it says > > $ zoneinfo > Node Normal Movable DMA DMA32 > 0 0.00 103020.07 8.94 1554.46 > 1 9284.54 89870.43 > 2 9626.33 94050.09 > 3 9602.82 93650.04 > > Not sure why I have zero Normal memory free on node0. The sum of all those > free counts is 410667.72 MB ... which is close enough to the boot time message > showing the amount of mirror/total memory: > > [ 0.000000] efi: Memory: 80979/420096M mirrored memory > > but a fair amount of the 80G of mirrored memory seems to have been miscounted > as Movable instead of Normal. Perhaps this is because I have two blocks of mirrored > memory on each node and the movable zone code doesn't expect that? You were saying that OS view of memory of node is something like the following ? Node X: |MMMMMM------MMMMMM--------| (legend) M: mirrored -: not mirrrored If so, is this a real Box's configuration? Sorry, I haven't got a real Address Range Mirror capable boxes yet ... I thought mirroring range is concatenated at the first part of each node. Sincerely, Taku Izumi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>