From: Aaron Lu <aaron.lu@intel.com>
To: Vlastimil Babka <vbabka@suse.cz>, linux-mm@kvack.org
Cc: Huang Ying <ying.huang@intel.com>,
Dave Hansen <dave.hansen@intel.com>,
Tim Chen <tim.c.chen@linux.intel.com>,
lkp@lists.01.org, Andrea Arcangeli <aarcange@redhat.com>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: hugepage compaction causes performance drop
Date: Fri, 20 Nov 2015 17:33:49 +0800 [thread overview]
Message-ID: <564EE8FD.7090702@intel.com> (raw)
In-Reply-To: <564EDFE5.5010709@intel.com>
[-- Attachment #1: Type: text/plain, Size: 835 bytes --]
On 11/20/2015 04:55 PM, Aaron Lu wrote:
> On 11/19/2015 09:29 PM, Vlastimil Babka wrote:
>> +CC Andrea, David, Joonsoo
>>
>> On 11/19/2015 10:29 AM, Aaron Lu wrote:
>>> The vmstat and perf-profile are also attached, please let me know if you
>>> need any more information, thanks.
>>
>> Output from vmstat (the tool) isn't much useful here, a periodic "cat
>> /proc/vmstat" would be much better.
>
> No problem.
>
>> The perf profiles are somewhat weirdly sorted by children cost (?), but
>> I noticed a very high cost (46%) in pageblock_pfn_to_page(). This could
>> be due to a very large but sparsely populated zone. Could you provide
>> /proc/zoneinfo?
>
> Is a one time /proc/zoneinfo enough or also a periodic one?
Please see attached, note that this is a new run so the perf profile is
a little different.
Thanks,
Aaron
[-- Attachment #2: zoneinfo --]
[-- Type: text/plain, Size: 36523 bytes --]
/proc/zoneinfo
Node 0, zone DMA
pages free 3950
min 2
low 2
high 3
scanned 0
spanned 4095
present 3994
managed 3973
nr_free_pages 3950
nr_alloc_batch 1
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nr_active_anon 0
nr_inactive_file 21
nr_active_file 1
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 0
nr_file_pages 22
nr_dirty 0
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 1
nr_page_table_pages 0
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_vmscan_immediate_reclaim 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
nr_dirtied 0
nr_written 0
nr_pages_scanned 0
numa_hit 23
numa_miss 0
numa_foreign 0
numa_interleave 0
numa_local 1
numa_other 22
workingset_refault 0
workingset_activate 0
workingset_nodereclaim 0
nr_anon_transparent_hugepages 0
nr_free_cma 0
protection: (0, 1873, 64327, 64327)
pagesets
cpu: 0
count: 0
high: 0
batch: 1
vm stats threshold: 14
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all_unreclaimable: 0
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Node 0, zone DMA32
pages free 62829
min 327
low 408
high 490
scanned 0
spanned 1044480
present 495951
managed 479559
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nr_alloc_batch 3
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nr_isolated_file 0
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nr_pages_scanned 0
numa_hit 416524
numa_miss 0
numa_foreign 0
numa_interleave 0
numa_local 414721
numa_other 1803
workingset_refault 0
workingset_activate 0
workingset_nodereclaim 0
nr_anon_transparent_hugepages 0
nr_free_cma 0
protection: (0, 0, 62453, 62453)
pagesets
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count: 33
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vm stats threshold: 70
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cpu: 71
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vm stats threshold: 125
all_unreclaimable: 0
start_pfn: 17301504
inactive_ratio: 24
[-- Attachment #3: proc-vmstat.gz --]
[-- Type: application/gzip, Size: 22205 bytes --]
[-- Attachment #4: perf-profile.xz --]
[-- Type: application/x-xz, Size: 116760 bytes --]
next prev parent reply other threads:[~2015-11-20 9:33 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-19 9:29 Aaron Lu
2015-11-19 13:29 ` Vlastimil Babka
2015-11-20 8:55 ` Aaron Lu
2015-11-20 9:33 ` Aaron Lu [this message]
2015-11-20 10:06 ` Vlastimil Babka
2015-11-23 8:16 ` Joonsoo Kim
2015-11-23 8:33 ` Aaron Lu
2015-11-23 9:24 ` Joonsoo Kim
2015-11-24 3:40 ` Aaron Lu
2015-11-24 4:55 ` Joonsoo Kim
2015-11-24 7:27 ` Aaron Lu
2015-11-24 8:29 ` Joonsoo Kim
2015-11-25 12:44 ` Vlastimil Babka
2015-11-26 5:47 ` Aaron Lu
2015-11-24 2:45 ` Joonsoo Kim
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