Re: [MooseFS-users] [Moosefs-users] Got poor performance

[Yves <lfs...@yo...>]

Hi Aleksander,

for the moment I prefer to keep mfs 1.6.27, which is the latest stable
version of branch 1.6 (2.0 suppose migration and test again before
production I think ...)

My test are very simple tests done with basics tools :

This is my new test now :

2 same servers (6 core AMD FX-6300 3,5 Ghz / 8 Go RAM / sata disk 6Gbps
with no raid / gigabyte LAN CAT 6).

I know the benefice of Jumbo frames but it is not possible to apply in
my situation at the moment.

So when I transfert a file under SSH from server A to server B (A and B
are on RAID 1), 100 MB file (random content) :
Result : speed transfert = 100 MB/s

Now with MFS with goal = 2, the same file : 33 MB/s

So, it's better, few days ago, the speed was ... 10MB/s

I continue tests ...

Yves

Aleksander Wieliczko a écrit :
> Hi Yves
> We are very glad that You are using MooseFS distributed file system.
>
> First of all we strongly recommended to update your instance to MooseFS
> 2.0.40-1 version.
> We fixed some bugs and add many new algorithms. All this make MooseFS
> 2.0 faster and provide better stability to cluster.
>
> >From description it appears that your LAN connection is getting only 76%
> bandwidth of 1Gb LAN.
> Can you check if you have any errors, dropped frames in INC interface?
>
> MooseFS is much more sensitive on LAN problems than nc.
> MooseFS need to communicate not only to one computer, but to master,
> chunkservers and clients, so this operations generating much more TCP
> traffic than one to one connection.
>
> By the way.
> We have similar configuration (8GB RAM, SATA 7200 RPM HDD, 1Gb LAN) in
> our development environment and we getting results for GOAL2
> read: 80MB/s and write: 50MB/s
>
> Can you send some more informations about this tests, and what software
> are you using to measure the MooseFS speed.
>
> Best regards
> Aleksander Wieliczko
> Technical Support Engineer
> moosefs.com
>
> On 10/18/2014 12:22 PM, "Yves Réveillon - eurower.fr" wrote:
>   
>> Hi everybody,
>>
>> I got poor performance with MooseFS :s
>>
>> This is my test :
>>
>> 3 servers with on each :
>> - 6 core AMD FX-6300 3,5 Ghz
>> - 8 Go RAM
>> - sata disk 6Gbps with no raid
>> - gigabyte LAN
>>
>> The switch is a HP Gigabyte, with CAT 6
>>
>> 1 server is the mfsmaster
>> 3 servers are chunkservers
>>
>> Tests with a tmpfs randomly data of 1 Go :
>>
>> Bandwidth beetween 2 server with ncat : 780 Mbps
>> Bandwitdh to write to a single sata (RAID-less) : 2593 Mbps (324 MB/s)
>>
>> MooseFS 1.6.27 with 2x replication goal :
>> Bandwidth : 85 Mbps (10.6 MB/s).
>>
>> During test, RAM is good, no production on theses servers (no activity)
>> and CPU is enought (less than 20%)
>>
>> Network and HDD not seems to be a bottleneck, so do you have any idea of
>> why I have 10.6 MB/s and not 20 or 30 MB/s as announced ?
>>
>> Thanks you
>>
>> Yves
>>
>>
>>
>>
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>
>
> ------------------------------------------------------------------------------
> Comprehensive Server Monitoring with Site24x7.
> Monitor 10 servers for $9/Month.
> Get alerted through email, SMS, voice calls or mobile push notifications.
> Take corrective actions from your mobile device.
> http://p.sf.net/sfu/Zoho
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