[owncloud-user] Which is the best server configuration for ownCloud?

Derek Broes derek at broes.net
Tue Feb 25 23:48:17 MET 2014


Me thinks this is going to be a big issue.

Derek Broes




On Tue, Feb 25, 2014 at 2:25 PM, Michael <mike at draftx.net> wrote:

> Could you do a 'free -h', my eyes don't read bytes :-)
>
> One limitation has been that you need more memory than the largest file
> you sync, so if you sync a 4 gb file, you will need 4gb ram as it all gets
> loaded into there. This may have been solved with chunked uploads a while
> back, could someone confirm/deny?
>
> Owncloud in my installation doesn't use a crazy amount of RAM.
>
> At the risk of sounding rude, here is an explanation of the output of free:
>
> http://serverfault.com/questions/85470/meaning-of-the-buffers-cache-line-in-the-output-of-free
> The output is often confusing to people who haven't used it much, as it
> looks like all RAM is used. If this isn't the case in your installation,
> please ignore and assume that this link is for someone else looking at the
> mailing list without this knowledge :-)
>
> Michael
>
>
> On Tue, Feb 25, 2014 at 2:27 PM, Pierre Malard <plm at teledetection.fr>wrote:
>
>> Le 25 févr. 2014 à 18:07, Nicolas Zedde <Nicolas.Zedde at plug-it.com> a
>> écrit :
>> > On 02/25/2014 4:52 PM, Pierre Malard wrote :
>> >> We have, since 2 years, an owncloud service on our institute network.
>> Now,
>> >> we want to generalize its usage but we have some interrogation about
>> the
>> >> best configuration.
>> >>
>> >> The system works on virtual XEN server with Debian Wheezy. The test
>> >> configuration is this:
>> >> - 2 CPU (i7)
>> >> - RAM : 4096 Mo
>> >> - Storage area: NFS mont on a low-cast SAN SATA.
>> >>
>> >> With about 5 or 6 users, the memory is alway to 90%. So what could be
>> this
>> >> charge with 150 or 300 users?
>> >>
>> >> is it because the IO access to NFS storage is too poor?
>> >
>> >
>> > Memory usage seems very high on your server compared to the number of
>> users.
>> > Actually, I checked on an OwnCloud server on my own with roughly the
>> same number of users and found 430MB for RAM Usage.
>> > Are you sure you're talking about used memory ? Debian uses cache
>> memory to 90% of the system memory but it's not really used and can be
>> allocated to applications.
>> > What does a 'top' command return in your case ? (you have to look at
>> the ' -/+ buffer/cache' line)
>>
>> That's ok, look the mem usage:
>> localu at nuage:~# free
>>              total       used       free     shared    buffers     cached
>> Mem:       4190044    3850664     339380          0     344996    1976800
>> -/+ buffers/cache:    1528868    2661176
>> Swap:      1048568       7260    1041308
>>
>> I have increase memory allocated to this virtual machine (first test with
>> 512 Mb) because we had a lot of strange error messages during
>> synchronizations (not enought space left, ...). As I saw the CPU usage were
>> also full, I decide to gave 2 CPU. Now, the CPU usage is normal.
>>
>> A explanation of memory usage with only 5 to 7 testings users could be
>> that we have 2 ownCloud services: one for production usage and one for
>> testing the new versions. The first one is on ownCloud v5.0.14a and the
>> second on on last v6.0.1.
>>
>> All ours user use this repository with all fonctionalities (data storage,
>> calandar, ...). The disk space allocated is from 500 Mb to 7 Gb per user.
>> Every connections are done on our LDAP service.
>>
>> When I'm take a look with "top", I can see that CPU usage is:
>> 1st : apache
>> 2nd : mysql
>> 3rd : fail2ban
>>
>> the memory usage top is:
>> 1st : clamd
>> 2nd : mysql
>> 3rd : apache
>>
>> If I talk about disk performance on my first mail, it's because the
>> synchronization can be very hard and our data storage is, actualy, on a low
>> Sata SAN. On the past, when we had only 1024 Mb of RAM, I have lots data
>> during synchronizations following errors. I don't want ours users have the
>> same problem.
>>
>> So, my question can be:
>> If we have a lot of real users (about 50 concurents access to 300 users)
>> which is the best configuration to our server?
>> - how many CPU dedicated?
>> - how many RAM?
>> - Sata disks or FC?
>>
>> If someone have experience...
>>
>> Regards
>>
>> --
>> Pierre Malard
>>
>>    << La liberté de la presse ne s'use que lorsqu'on ne s'en sert pas ! >>
>>                                                   Slogan du "Canard
>> enchaîné"
>>    |\      _,,,---,,_
>>    /,`.-'`'    -.  ;-;;,_
>>   |,4-  ) )-,_. ,\ (  `'-'
>>  '---''(_/--'  `-'\_)
>>
>> perl -e '$_=q#: 3|\ 5-,3-3,2-: 3/,`.'"'"'`'"'"' 5-.  ;-;;,-:  |,A-  )
>> )-,_. ,\ (  `'"'"'-'"'"': '"'"'-3'"'"'2(-/--'"'"'  `-'"'"'\-):
>> 22PLM::#;y#:#\n#;s#(\D)(\d+)#$1x$2#ge;print'
>> - --> Ce message n'engage que son auteur <--
>>
>>
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>
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