From: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
To: Mel Gorman <mgorman@techsingularity.net>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>, Rik van Riel <riel@surriel.com>,
Vlastimil Babka <vbabka@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>,
Minchan Kim <minchan@kernel.org>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
LKML <linux-kernel@vger.kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
linuxppc-dev@lists.ozlabs.org,
Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>,
Hari Bathini <hbathini@linux.vnet.ibm.com>
Subject: Re: [PATCH 07/34] mm, vmscan: make kswapd reclaim in terms of nodes
Date: Tue, 30 Aug 2016 19:55:08 +0530 [thread overview]
Message-ID: <20160830142508.GA10514@linux.vnet.ibm.com> (raw)
In-Reply-To: <20160830120728.GV8119@techsingularity.net>
> >
> > This patch seems to hurt FA_DUMP functionality. This behaviour is not
> > seen on v4.7 but only after this patch.
> >
> > So when a kernel on a multinode machine with memblock_reserve() such
> > that most of the nodes have zero available memory, kswapd seems to be
> > consuming 100% of the time.
> >
>
> Why is FA_DUMP specifically the trigger? If the nodes have zero available
> memory then is the zone_populated() check failing when FA_DUMP is enabled? If
> so, that would both allow kswapd to wake and stay awake.
>
The trigger is memblock_reserve() for the complete node memory. And
this is exactly what FA_DUMP does. Here again the node has memory but
its all reserved so there is no free memory in the node.
Did you mean populated_zone() when you said zone_populated or have I
mistaken? populated_zone() does return 1 since it checks for
zone->present_pages.
Here is revelant log from the dmesg log at boot
ppc64_pft_size = 0x26
phys_mem_size = 0x1e4600000000
dcache_bsize = 0x80
icache_bsize = 0x80
cpu_features = 0x27fc7aec18500249
possible = 0x3fffffff18500649
always = 0x0000000018100040
cpu_user_features = 0xdc0065c2 0xef000000
mmu_features = 0x7c000001
firmware_features = 0x00000003c45bfc57
htab_hash_mask = 0x7fffffff
-----------------------------------------------------
Node 0 Memory: 0x0-0x1fb50000000
Node 1 Memory: 0x1fb50000000-0x3fa90000000
Node 2 Memory: 0x3fa90000000-0x5f9b0000000
Node 3 Memory: 0x5f9b0000000-0x76850000000
Node 4 Memory: 0x76850000000-0x95020000000
Node 5 Memory: 0x95020000000-0xb37f0000000
Node 6 Memory: 0xb37f0000000-0xd1fc0000000
Node 7 Memory: 0xd1fc0000000-0xf0790000000
Node 8 Memory: 0xf0790000000-0x10ef60000000
Node 9 Memory: 0x10ef60000000-0x12d730000000
Node 10 Memory: 0x12d730000000-0x14bf00000000
Node 11 Memory: 0x14bf00000000-0x16a6d0000000
Node 12 Memory: 0x16a6d0000000-0x188ea0000000
Node 13 Memory: 0x188ea0000000-0x1a7660000000
Node 14 Memory: 0x1a7660000000-0x1c5e30000000
Node 15 Memory: 0x1c5e30000000-0x1e4600000000
numa: Initmem setup node 0 [mem 0x00000000-0x1fb4fffffff]
numa: NODE_DATA [mem 0x1837fe23680-0x1837fe2d37f]
numa: Initmem setup node 1 [mem 0x1fb50000000-0x3fa8fffffff]
numa: NODE_DATA [mem 0x1837fa19980-0x1837fa2367f]
numa: NODE_DATA(1) on node 0
numa: Initmem setup node 2 [mem 0x3fa90000000-0x5f9afffffff]
numa: NODE_DATA [mem 0x1837f60fc80-0x1837f61997f]
numa: NODE_DATA(2) on node 0
numa: Initmem setup node 3 [mem 0x5f9b0000000-0x7684fffffff]
numa: NODE_DATA [mem 0x1837f205f80-0x1837f20fc7f]
numa: NODE_DATA(3) on node 0
numa: Initmem setup node 4 [mem 0x76850000000-0x9501fffffff]
numa: NODE_DATA [mem 0x1837ef1c280-0x1837ef25f7f]
numa: NODE_DATA(4) on node 0
numa: Initmem setup node 5 [mem 0x95020000000-0xb37efffffff]
numa: NODE_DATA [mem 0x1837eb42580-0x1837eb4c27f]
numa: NODE_DATA(5) on node 0
numa: Initmem setup node 6 [mem 0xb37f0000000-0xd1fbfffffff]
numa: NODE_DATA [mem 0x1837e778880-0x1837e78257f]
numa: NODE_DATA(6) on node 0
numa: Initmem setup node 7 [mem 0xd1fc0000000-0xf078fffffff]
numa: NODE_DATA [mem 0x1837e39eb80-0x1837e3a887f]
numa: NODE_DATA(7) on node 0
numa: Initmem setup node 8 [mem 0xf0790000000-0x10ef5fffffff]
numa: NODE_DATA [mem 0x1837dfc4e80-0x1837dfceb7f]
numa: NODE_DATA(8) on node 0
numa: Initmem setup node 9 [mem 0x10ef60000000-0x12d72fffffff]
numa: NODE_DATA [mem 0x1837dbeb180-0x1837dbf4e7f]
numa: NODE_DATA(9) on node 0
numa: Initmem setup node 10 [mem 0x12d730000000-0x14beffffffff]
numa: NODE_DATA [mem 0x1837d811480-0x1837d81b17f]
numa: NODE_DATA(10) on node 0
numa: Initmem setup node 11 [mem 0x14bf00000000-0x16a6cfffffff]
numa: NODE_DATA [mem 0x1837d437780-0x1837d44147f]
numa: NODE_DATA(11) on node 0
numa: Initmem setup node 12 [mem 0x16a6d0000000-0x188e9fffffff]
numa: NODE_DATA [mem 0x1837d05da80-0x1837d06777f]
numa: NODE_DATA(12) on node 0
numa: Initmem setup node 13 [mem 0x188ea0000000-0x1a765fffffff]
numa: NODE_DATA [mem 0x1837cc83d80-0x1837cc8da7f]
numa: NODE_DATA(13) on node 0
numa: Initmem setup node 14 [mem 0x1a7660000000-0x1c5e2fffffff]
numa: NODE_DATA [mem 0x1837c8aa080-0x1837c8b3d7f]
numa: NODE_DATA(14) on node 0
numa: Initmem setup node 15 [mem 0x1c5e30000000-0x1e45ffffffff]
numa: NODE_DATA [mem 0x1837c4d0380-0x1837c4da07f]
numa: NODE_DATA(15) on node 0
Section 99194 and 99199 (node 0) have a circular dependency on usemap and pgdat allocations
node 1 must be removed before remove section 99193
node 1 must be removed before remove section 99194
node 2 must be removed before remove section 99193
node 4 must be removed before remove section 99193
node 8 must be removed before remove section 99193
node 13 must be removed before remove section 99193
PCI host bridge /pci@800000020000032 ranges:
MEM 0x00003fd480000000..0x00003fd4feffffff -> 0x0000000080000000
MEM 0x0000329000000000..0x0000329fffffffff -> 0x0003d29000000000
PCI host bridge /pci@800000020000164 ranges:
MEM 0x00003fc2e0000000..0x00003fc2efffffff -> 0x00000000e0000000
MEM 0x0000305800000000..0x0000305bffffffff -> 0x0003d05800000000
PPC64 nvram contains 15360 bytes
Top of RAM: 0x1e4600000000, Total RAM: 0x1e4600000000
Memory hole size: 0MB
Zone ranges:
DMA [mem 0x0000000000000000-0x00001e45ffffffff]
DMA32 empty
Normal empty
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000000000000-0x000001fb4fffffff]
node 1: [mem 0x000001fb50000000-0x000003fa8fffffff]
node 2: [mem 0x000003fa90000000-0x000005f9afffffff]
node 3: [mem 0x000005f9b0000000-0x000007684fffffff]
node 4: [mem 0x0000076850000000-0x000009501fffffff]
node 5: [mem 0x0000095020000000-0x00000b37efffffff]
node 6: [mem 0x00000b37f0000000-0x00000d1fbfffffff]
node 7: [mem 0x00000d1fc0000000-0x00000f078fffffff]
node 8: [mem 0x00000f0790000000-0x000010ef5fffffff]
node 9: [mem 0x000010ef60000000-0x000012d72fffffff]
node 10: [mem 0x000012d730000000-0x000014beffffffff]
node 11: [mem 0x000014bf00000000-0x000016a6cfffffff]
node 12: [mem 0x000016a6d0000000-0x0000188e9fffffff]
node 13: [mem 0x0000188ea0000000-0x00001a765fffffff]
node 14: [mem 0x00001a7660000000-0x00001c5e2fffffff]
node 15: [mem 0x00001c5e30000000-0x00001e45ffffffff]
Initmem setup node 0 [mem 0x0000000000000000-0x000001fb4fffffff]
On node 0 totalpages: 33247232
DMA zone: 32468 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 33247232 pages, LIFO batch:1
Initmem setup node 1 [mem 0x000001fb50000000-0x000003fa8fffffff]
On node 1 totalpages: 33505280
DMA zone: 32720 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 33505280 pages, LIFO batch:1
Initmem setup node 2 [mem 0x000003fa90000000-0x000005f9afffffff]
On node 2 totalpages: 33497088
DMA zone: 32712 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 33497088 pages, LIFO batch:1
Initmem setup node 3 [mem 0x000005f9b0000000-0x000007684fffffff]
On node 3 totalpages: 24027136
DMA zone: 23464 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 24027136 pages, LIFO batch:1
Initmem setup node 4 [mem 0x0000076850000000-0x000009501fffffff]
On node 4 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
Initmem setup node 5 [mem 0x0000095020000000-0x00000b37efffffff]
On node 5 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
Initmem setup node 6 [mem 0x00000b37f0000000-0x00000d1fbfffffff]
On node 6 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
Initmem setup node 7 [mem 0x00000d1fc0000000-0x00000f078fffffff]
On node 7 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
Initmem setup node 8 [mem 0x00000f0790000000-0x000010ef5fffffff]
On node 8 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
Initmem setup node 9 [mem 0x000010ef60000000-0x000012d72fffffff]
On node 9 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
Initmem setup node 10 [mem 0x000012d730000000-0x000014beffffffff]
On node 10 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
Initmem setup node 11 [mem 0x000014bf00000000-0x000016a6cfffffff]
On node 11 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
Initmem setup node 12 [mem 0x000016a6d0000000-0x0000188e9fffffff]
On node 12 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
Initmem setup node 13 [mem 0x0000188ea0000000-0x00001a765fffffff]
On node 13 totalpages: 31965184
DMA zone: 31216 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31965184 pages, LIFO batch:1
Initmem setup node 14 [mem 0x00001a7660000000-0x00001c5e2fffffff]
On node 14 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
Initmem setup node 15 [mem 0x00001c5e30000000-0x00001e45ffffffff]
On node 15 totalpages: 31969280
DMA zone: 31220 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 31969280 pages, LIFO batch:1
--
Thanks and Regards
Srikar Dronamraju
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-08-30 14:25 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-08 9:34 [PATCH 00/34] Move LRU page reclaim from zones to nodes v9 Mel Gorman
2016-07-08 9:34 ` [PATCH 01/34] mm, vmstat: add infrastructure for per-node vmstats Mel Gorman
2016-08-03 19:13 ` Reza Arbab
2016-07-08 9:34 ` [PATCH 02/34] mm, vmscan: move lru_lock to the node Mel Gorman
2016-07-12 11:06 ` Balbir Singh
2016-07-12 11:18 ` Mel Gorman
2016-07-13 5:50 ` Balbir Singh
2016-07-13 8:39 ` Vlastimil Babka
2016-07-08 9:34 ` [PATCH 03/34] mm, vmscan: move LRU lists to node Mel Gorman
2016-08-04 20:59 ` James Hogan
2016-08-05 8:41 ` Mel Gorman
2016-08-05 10:52 ` James Hogan
2016-08-05 11:55 ` Mel Gorman
2016-08-05 12:02 ` James Hogan
2016-07-08 9:34 ` [PATCH 04/34] mm, mmzone: clarify the usage of zone padding Mel Gorman
2016-07-12 13:49 ` Johannes Weiner
2016-07-08 9:34 ` [PATCH 05/34] mm, vmscan: begin reclaiming pages on a per-node basis Mel Gorman
2016-07-12 13:54 ` Johannes Weiner
2016-07-14 9:19 ` Vlastimil Babka
2016-07-08 9:34 ` [PATCH 06/34] mm, vmscan: have kswapd only scan based on the highest requested zone Mel Gorman
2016-07-12 14:05 ` Johannes Weiner
2016-07-13 8:37 ` Mel Gorman
2016-07-08 9:34 ` [PATCH 07/34] mm, vmscan: make kswapd reclaim in terms of nodes Mel Gorman
2016-08-29 9:38 ` Srikar Dronamraju
2016-08-30 12:07 ` Mel Gorman
2016-08-30 14:25 ` Srikar Dronamraju [this message]
2016-08-30 15:00 ` Mel Gorman
2016-08-31 6:09 ` Srikar Dronamraju
2016-08-31 8:49 ` Mel Gorman
2016-08-31 11:09 ` Michal Hocko
2016-08-31 12:46 ` Mel Gorman
2016-08-31 17:33 ` Srikar Dronamraju
2016-07-08 9:34 ` [PATCH 08/34] mm, vmscan: remove balance gap Mel Gorman
2016-07-12 14:06 ` Johannes Weiner
2016-07-08 9:34 ` [PATCH 09/34] mm, vmscan: simplify the logic deciding whether kswapd sleeps Mel Gorman
2016-07-08 9:34 ` [PATCH 10/34] mm, vmscan: by default have direct reclaim only shrink once per node Mel Gorman
2016-07-08 9:34 ` [PATCH 11/34] mm, vmscan: remove duplicate logic clearing node congestion and dirty state Mel Gorman
2016-07-12 14:22 ` Johannes Weiner
2016-07-13 8:40 ` Mel Gorman
2016-07-14 9:45 ` Vlastimil Babka
2016-07-08 9:34 ` [PATCH 12/34] mm: vmscan: do not reclaim from kswapd if there is any eligible zone Mel Gorman
2016-07-12 14:29 ` Johannes Weiner
2016-07-13 8:47 ` Mel Gorman
2016-07-13 12:28 ` Johannes Weiner
2016-07-08 9:34 ` [PATCH 13/34] mm, vmscan: make shrink_node decisions more node-centric Mel Gorman
2016-07-12 14:32 ` Johannes Weiner
2016-07-13 8:48 ` Mel Gorman
2016-07-08 9:34 ` [PATCH 14/34] mm, memcg: move memcg limit enforcement from zones to nodes Mel Gorman
2016-07-12 14:38 ` Johannes Weiner
2016-07-08 9:34 ` [PATCH 15/34] mm, workingset: make working set detection node-aware Mel Gorman
2016-07-08 9:34 ` [PATCH 16/34] mm, page_alloc: consider dirtyable memory in terms of nodes Mel Gorman
2016-07-08 9:34 ` [PATCH 17/34] mm: move page mapped accounting to the node Mel Gorman
2016-07-12 14:42 ` Johannes Weiner
2016-07-08 9:34 ` [PATCH 18/34] mm: rename NR_ANON_PAGES to NR_ANON_MAPPED Mel Gorman
2016-07-12 14:58 ` Johannes Weiner
2016-07-13 8:55 ` Mel Gorman
2016-07-13 13:04 ` Johannes Weiner
2016-07-13 13:37 ` Mel Gorman
2016-07-13 21:13 ` Andrew Morton
2016-07-15 10:46 ` Mel Gorman
2016-07-15 22:35 ` Andrew Morton
2016-07-18 13:34 ` Johannes Weiner
2016-07-14 1:27 ` Minchan Kim
2016-07-08 9:34 ` [PATCH 19/34] mm: move most file-based accounting to the node Mel Gorman
2016-07-12 15:11 ` Johannes Weiner
2016-07-08 9:34 ` [PATCH 20/34] mm: move vmscan writes and file write " Mel Gorman
2016-07-12 15:15 ` Johannes Weiner
2016-07-08 9:34 ` [PATCH 21/34] mm, vmscan: only wakeup kswapd once per node for the requested classzone Mel Gorman
2016-07-12 17:18 ` Johannes Weiner
2016-07-08 9:34 ` [PATCH 22/34] mm, page_alloc: wake kswapd based on the highest eligible zone Mel Gorman
2016-07-12 17:24 ` Johannes Weiner
2016-07-14 10:05 ` Vlastimil Babka
2016-07-08 9:34 ` [PATCH 23/34] mm: convert zone_reclaim to node_reclaim Mel Gorman
2016-07-12 17:28 ` Johannes Weiner
2016-07-08 9:35 ` [PATCH 24/34] mm, vmscan: avoid passing in classzone_idx unnecessarily to shrink_node Mel Gorman
2016-07-12 17:31 ` Johannes Weiner
2016-07-14 10:09 ` Vlastimil Babka
2016-07-08 9:35 ` [PATCH 25/34] mm, vmscan: avoid passing in classzone_idx unnecessarily to compaction_ready Mel Gorman
2016-07-12 18:01 ` Johannes Weiner
2016-07-14 12:12 ` Vlastimil Babka
2016-07-08 9:35 ` [PATCH 26/34] mm, vmscan: avoid passing in remaining unnecessarily to prepare_kswapd_sleep Mel Gorman
2016-07-12 18:06 ` Johannes Weiner
2016-07-14 12:48 ` Vlastimil Babka
2016-07-08 9:35 ` [PATCH 27/34] mm, vmscan: Have kswapd reclaim from all zones if reclaiming and buffer_heads_over_limit Mel Gorman
2016-07-12 18:10 ` Johannes Weiner
2016-07-14 12:54 ` Vlastimil Babka
2016-07-08 9:35 ` [PATCH 28/34] mm, vmscan: add classzone information to tracepoints Mel Gorman
2016-07-12 18:13 ` Johannes Weiner
2016-07-08 9:35 ` [PATCH 29/34] mm, page_alloc: remove fair zone allocation policy Mel Gorman
2016-07-12 18:18 ` Johannes Weiner
2016-07-08 9:35 ` [PATCH 30/34] mm: page_alloc: cache the last node whose dirty limit is reached Mel Gorman
2016-07-12 18:43 ` Johannes Weiner
2016-07-08 9:35 ` [PATCH 31/34] mm: vmstat: replace __count_zone_vm_events with a zone id equivalent Mel Gorman
2016-07-12 19:10 ` Johannes Weiner
2016-07-08 9:35 ` [PATCH 32/34] mm: vmstat: account per-zone stalls and pages skipped during reclaim Mel Gorman
2016-07-12 19:06 ` Johannes Weiner
2016-07-08 9:35 ` [PATCH 33/34] mm, vmstat: print node-based stats in zoneinfo file Mel Gorman
2016-07-12 19:18 ` Johannes Weiner
2016-07-14 12:56 ` Vlastimil Babka
2016-07-08 9:35 ` [PATCH 34/34] mm, vmstat: remove zone and node double accounting by approximating retries Mel Gorman
2016-07-14 13:40 ` Vlastimil Babka
2016-07-15 7:48 ` Mel Gorman
2016-07-15 12:20 ` Vlastimil Babka
2016-08-19 13:12 ` [PATCH 00/34] Move LRU page reclaim from zones to nodes v9 Andrea Arcangeli
2016-08-19 13:23 ` Vlastimil Babka
2016-08-19 13:55 ` Andrea Arcangeli
2016-08-19 14:53 ` Mel Gorman
2016-08-19 15:32 ` Andrea Arcangeli
2016-08-19 15:55 ` Mel Gorman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160830142508.GA10514@linux.vnet.ibm.com \
--to=srikar@linux.vnet.ibm.com \
--cc=akpm@linux-foundation.org \
--cc=hannes@cmpxchg.org \
--cc=hbathini@linux.vnet.ibm.com \
--cc=iamjoonsoo.kim@lge.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mahesh@linux.vnet.ibm.com \
--cc=mgorman@techsingularity.net \
--cc=minchan@kernel.org \
--cc=mpe@ellerman.id.au \
--cc=riel@surriel.com \
--cc=vbabka@suse.cz \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).