Messages in this thread | | | Date | Sun, 5 Jul 2009 19:05:48 +0800 | From | Wu Fengguang <> | Subject | Re: [PATCH 1/5] add per-zone statistics to show_free_areas() |
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On Sun, Jul 05, 2009 at 05:23:35PM +0800, KOSAKI Motohiro wrote: > Subject: [PATCH] add per-zone statistics to show_free_areas() > > Currently, show_free_area() mainly display system memory usage. but it > doesn't display per-zone memory usage information. > > However, if DMA zone OOM occur, Administrator definitely need to know > per-zone memory usage information.
DMA zone is normally lowmem-reserved. But I think the numbers still make sense for DMA32.
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
> > > Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> > --- > mm/page_alloc.c | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > > Index: b/mm/page_alloc.c > =================================================================== > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -2151,6 +2151,16 @@ void show_free_areas(void) > " inactive_file:%lukB" > " unevictable:%lukB" > " present:%lukB" > + " mlocked:%lukB" > + " dirty:%lukB" > + " writeback:%lukB" > + " mapped:%lukB" > + " slab_reclaimable:%lukB" > + " slab_unreclaimable:%lukB" > + " pagetables:%lukB" > + " unstable:%lukB" > + " bounce:%lukB" > + " writeback_tmp:%lukB" > " pages_scanned:%lu" > " all_unreclaimable? %s" > "\n", > @@ -2165,6 +2175,16 @@ void show_free_areas(void) > K(zone_page_state(zone, NR_INACTIVE_FILE)), > K(zone_page_state(zone, NR_UNEVICTABLE)), > K(zone->present_pages), > + K(zone_page_state(zone, NR_MLOCK)), > + K(zone_page_state(zone, NR_FILE_DIRTY)), > + K(zone_page_state(zone, NR_WRITEBACK)), > + K(zone_page_state(zone, NR_FILE_MAPPED)), > + K(zone_page_state(zone, NR_SLAB_RECLAIMABLE)), > + K(zone_page_state(zone, NR_SLAB_UNRECLAIMABLE)), > + K(zone_page_state(zone, NR_PAGETABLE)), > + K(zone_page_state(zone, NR_UNSTABLE_NFS)), > + K(zone_page_state(zone, NR_BOUNCE)), > + K(zone_page_state(zone, NR_WRITEBACK_TEMP)), > zone->pages_scanned, > (zone_is_all_unreclaimable(zone) ? "yes" : "no") > ); >
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