[Gluster-users] gluster write performance

[Roman]

Hey guys, never mind. its MC copy slow. using other methods or even native
cp does it with right speed. sorry.

2015-07-18 23:26 GMT+03:00 Mathieu Chateau <mathieu.chateau at lotp.fr>:

> These numbers are not helpfull without context :
>
>    - Raid level
>    - Number of disks
>    - nature & size of files
>
> What do you get for this sample?
> dd if=/dev/zero of=sample.txt bs=50M count=1
>
> Test it accross differents cases to get a baseline:
>
>    - Local disk on client
>    - Locak disk on each brick
>    - through gluster from client
>
> Once you have your baseline, you can start to tune system and see changes
> based on it.
>
>
> Cordialement,
> Mathieu CHATEAU
> http://www.lotp.fr
>
> 2015-07-18 22:11 GMT+02:00 Roman <romeo.r at gmail.com>:
>
>> But when I'm inside of VM, I'm getting 50-53 MB/s for replica and 120 MB
>> for distributed volumes...
>> whats the logic? that slow write speed directly to mounted gfs volume
>> slows down backup and restore process of VMs by VE.
>>
>> 2015-07-18 22:47 GMT+03:00 Roman <romeo.r at gmail.com>:
>>
>>> Hi,
>>>
>>> Looked a lot from forums, but didn't find much..
>>> So I've got glusterfs 3.6.4
>>> 1 Gbps network
>>> replicate and distributed volumes
>>>
>>> so when i read from any of them, I get maxed-out network performance
>>> (around 80-120 MB/sec)
>>> If i write to distributed volume, I get 16 MB/sec
>>> If i write to replicated volume, I get around half of it (which is
>>> logical) 8-10MB/sec
>>>
>>> i use XFS (with all set recommended options) and EXT4 for gluster. no
>>> difference.
>>> Disks are in HW RAID5 for Distributed volume and RAID0 for Replicated
>>> volume
>>>
>>> volume options:
>>>
>>> performance.write-behind: off
>>> server.allow-insecure: on
>>> cluster.server-quorum-type: server
>>> cluster.quorum-type: auto
>>> network.remote-dio: enable
>>> cluster.eager-lock: enable
>>> performance.stat-prefetch: off
>>> performance.io-cache: off
>>> performance.read-ahead: off
>>> performance.quick-read: off
>>>
>>> Am I missing something?
>>>
>>> --
>>> Best regards,
>>> Roman.
>>>
>>
>>
>>
>> --
>> Best regards,
>> Roman.
>>
>> _______________________________________________
>> Gluster-users mailing list
>> Gluster-users at gluster.org
>> http://www.gluster.org/mailman/listinfo/gluster-users
>>
>
>


-- 
Best regards,
Roman.
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