[PVE-User] Proxmox Ceph high memory usage
Ronny Aasen
ronny+pve-user at aasen.cx
Wed Jan 16 13:42:13 CET 2019
the memory consumption of the machine is an aggregate of multiple
consumers.
identify what is using memory try commands like
top -o VIRT and top -o RES
to reduce VM memory usage, you can move or stop virtual machines,
reconfigure them with less memory, or try to use KSM if you nave many
identical vm's https://en.wikipedia.org/wiki/Kernel_same-page_merging
to reduce ceoh osd memory consumption you can tweak the bluestore memory
cache
http://docs.ceph.com/docs/master/rados/configuration/bluestore-config-ref/#automatic-cache-sizing
; with only 16GB i think you need to try to reduce cache (and hence
performance) a bit here.
also ceph memory usage increase quite a bit when recovering and
backfilling, so when planning resource requirements, plan for the
recovery situation, and have some free overhead.
kind regards
Ronny Aasen
On 16.01.2019 13:28, Gilberto Nunes wrote:
> pve-ceph01:~# ceph status
> cluster:
> id: e67534b4-0a66-48db-ad6f-aa0868e962d8
> health: HEALTH_WARN
> nobackfill,norebalance,norecover,nodeep-scrub flag(s) set
> 394106/2589186 objects misplaced (15.221%)
> Degraded data redundancy: 124011/2589186 objects degraded
> (4.790%), 158 pgs degraded, 76 pgs undersized
>
> services:
> mon: 5 daemons, quorum
> pve-ceph01,pve-ceph02,pve-ceph03,pve-ceph04,pve-ceph05
> mgr: pve-ceph05(active), standbys: pve-ceph01, pve-ceph03, pve-ceph04,
> pve-ceph02
> osd: 21 osds: 21 up, 21 in; 230 remapped pgs
> flags nobackfill,norebalance,norecover,nodeep-scrub
>
> data:
> pools: 1 pools, 512 pgs
> objects: 863.06k objects, 3.17TiB
> usage: 9.73TiB used, 53.0TiB / 62.8TiB avail
> pgs: 124011/2589186 objects degraded (4.790%)
> 394106/2589186 objects misplaced (15.221%)
> 180 active+clean
> 76 active+remapped+backfill_wait
> 70 active+recovery_wait
> 63 active+undersized+degraded+remapped+backfill_wait
> 49 active+recovery_wait+degraded+remapped
> 32 active+recovery_wait+degraded
> 28 active+recovery_wait+remapped
> 12 active+recovery_wait+undersized+degraded+remapped
> 1 active+recovering+degraded+remapped
> 1 active+undersized+degraded+remapped+backfilling
>
> io:
> client: 694KiB/s rd, 172KiB/s wr, 118op/s rd, 38op/s wr
> recovery: 257KiB/s, 0objects/s
> ---
> Gilberto Nunes Ferreira
>
> (47) 3025-5907
> (47) 99676-7530 - Whatsapp / Telegram
>
> Skype: gilberto.nunes36
>
>
>
>
>
> Em qua, 16 de jan de 2019 às 10:23, Gilberto Nunes <
> gilberto.nunes32 at gmail.com> escreveu:
>
>> Hi...
>> I am using BlueStore.
>> pve-manager/5.3-7/e8ed1e22 (running kernel: 4.15.18-9-pve)
>> ceph 12.2.10-pve1
>>
>> Thanks
>> ---
>> Gilberto Nunes Ferreira
>>
>> (47) 3025-5907
>> (47) 99676-7530 - Whatsapp / Telegram
>>
>> Skype: gilberto.nunes36
>>
>>
>>
>>
>>
>> Em qua, 16 de jan de 2019 às 10:17, Eneko Lacunza <elacunza at binovo.es>
>> escreveu:
>>
>>> Hi Gilberto,
>>>
>>> Are you using Blustore? What version of Ceph?
>>>
>>> El 16/1/19 a las 13:11, Gilberto Nunes escribió:
>>>> Hi there
>>>>
>>>> Anybody else experiment hight memory usage in Proxmox CEPH Storage
>>> Server?
>>>> I have a 6 node PVE CEPH and after upgrade, I have noticed this high
>>> memory
>>>> usage...
>>>> All server has 16GB of ram. I know this is not recomended, but that
>>> what I
>>>> have at the moment.
>>>> In fact, just 3 servers ran with about 90% of memory usage.
>>>> All server is IBM x3200 m2 with SATA disks...
>>>> Here's ceph osd tree
>>>> ceph osd tree
>>>> ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
>>>> -1 38.50000 root default
>>>> -3 4.00000 host pve-ceph01
>>>> 0 hdd 1.00000 osd.0 up 1.00000 0
>>>> 1 hdd 1.00000 osd.1 up 1.00000 0
>>>> 2 hdd 1.00000 osd.2 up 1.00000 0
>>>> 3 hdd 1.00000 osd.3 up 1.00000 0
>>>> -5 8.00000 host pve-ceph02
>>>> 4 hdd 2.00000 osd.4 up 1.00000 1.00000
>>>> 5 hdd 2.00000 osd.5 up 1.00000 1.00000
>>>> 6 hdd 2.00000 osd.6 up 1.00000 1.00000
>>>> 7 hdd 2.00000 osd.7 up 1.00000 1.00000
>>>> -7 9.00000 host pve-ceph03
>>>> 8 hdd 3.00000 osd.8 up 1.00000 1.00000
>>>> 9 hdd 3.00000 osd.9 up 1.00000 1.00000
>>>> 10 hdd 3.00000 osd.10 up 1.00000 1.00000
>>>> -9 12.00000 host pve-ceph04
>>>> 11 hdd 3.00000 osd.11 up 1.00000 1.00000
>>>> 12 hdd 3.00000 osd.12 up 1.00000 1.00000
>>>> 13 hdd 3.00000 osd.13 up 1.00000 1.00000
>>>> 14 hdd 3.00000 osd.14 up 1.00000 1.00000
>>>> -11 1.00000 host pve-ceph05
>>>> 15 hdd 0.50000 osd.15 up 1.00000 0
>>>> 16 hdd 0.50000 osd.16 up 1.00000 0
>>>> -13 4.50000 host pve-ceph06
>>>> 17 hdd 1.00000 osd.17 up 1.00000 0
>>>> 18 hdd 1.00000 osd.18 up 1.00000 0
>>>> 20 hdd 1.00000 osd.20 up 1.00000 0
>>>> 21 hdd 1.50000 osd.21 up 1.00000 1.00000
>>>>
>>>> ---
>>>> Gilberto Nunes Ferreira
>>>>
>>>> (47) 3025-5907
>>>> (47) 99676-7530 - Whatsapp / Telegram
>>>>
>>>> Skype: gilberto.nunes36
>>>> _______________________________________________
>>>> pve-user mailing list
>>>> pve-user at pve.proxmox.com
>>>> https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>>>
>>>
>>> --
>>> Zuzendari Teknikoa / Director Técnico
>>> Binovo IT Human Project, S.L.
>>> Telf. 943569206
>>> Astigarraga bidea 2, 2º izq. oficina 11; 20180 Oiartzun (Gipuzkoa)
>>> www.binovo.es
>>>
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>>
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