[Gluster-users] slow write perf for disperse volume

[Pranith Kumar Karampuri]

+Ashish

Ashish,
       Could you help Ingard? Do let me know what you find.

On Mon, Apr 24, 2017 at 4:50 PM, Ingard Mevåg <ingard at jotta.no> wrote:

> Hi. I can't see a fuse thread at all. Please see attached screenshot of
> top process with threads. Keep in mind this is from inside the container.
>
> 2017-04-24 12:17 GMT+02:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:
>
>> We were able to saturate hardware with EC as well. Could you check 'top'
>> in threaded mode to see if fuse thread is saturated when you run dd?
>>
>> On Mon, Apr 24, 2017 at 3:27 PM, Ingard Mevåg <ingard at jotta.no> wrote:
>>
>>> Hi
>>> I've been playing with disperse volumes the past week, and so far i can
>>> not get more than 12MB/s when i do a write test. I've tried a distributed
>>> volume on the same bricks and gotten close to gigabit speeds. iperf
>>> confirms gigabit speeds to all three servers in the storage pool.
>>>
>>> The three storage servers have 10gig nics (connected to the same
>>> switch). The client is for a now a docker container in a 2nd DC (latency
>>> roughly 8-9 ms).
>>>
>>> dpkg -l|grep -i gluster
>>> ii  glusterfs-client               3.10.1-ubuntu1~xenial1          amd64
>>>        clustered file-system (client package)
>>> ii  glusterfs-common               3.10.1-ubuntu1~xenial1          amd64
>>>        GlusterFS common libraries and translator modules
>>> ii  glusterfs-server               3.10.1-ubuntu1~xenial1          amd64
>>>        clustered file-system (server package)
>>>
>>> $ gluster volume info
>>>
>>> Volume Name: DFS-ARCHIVE-001
>>> Type: Disperse
>>> Volume ID: 1497bc85-cb47-4123-8f91-a07f55c11dcc
>>> Status: Started
>>> Snapshot Count: 0
>>> Number of Bricks: 1 x (4 + 2) = 6
>>> Transport-type: tcp
>>> Bricks:
>>> Brick1: dna-001:/mnt/data01/brick
>>> Brick2: dna-001:/mnt/data02/brick
>>> Brick3: dna-002:/mnt/data01/brick
>>> Brick4: dna-002:/mnt/data02/brick
>>> Brick5: dna-003:/mnt/data01/brick
>>> Brick6: dna-003:/mnt/data02/brick
>>> Options Reconfigured:
>>> transport.address-family: inet
>>> nfs.disable: on
>>>
>>> Anyone know the reason for the slow speeds on disperse vs distribute?
>>>
>>> kind regards
>>> ingard
>>>
>>> _______________________________________________
>>> Gluster-users mailing list
>>> Gluster-users at gluster.org
>>> http://lists.gluster.org/mailman/listinfo/gluster-users
>>>
>>
>>
>>
>> --
>> Pranith
>>
>
>
>
> --
> Ingard Mevåg
> Driftssjef
> Jottacloud
>
> Mobil: +47 450 22 834
> E-post: ingard at jottacloud.com
> Webside: www.jottacloud.com
>



-- 
Pranith
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