[linux-lvm] LVM is low

[linux-lvm] LVM is low

[Grégory Duchatelet]

Hi list,

I install a server with LVM partitions with ReiserFS, server runs 
OpenLDAP, Tomcat5, Apache2, Samba, etc....

Comparing with native ReiserFS, LVM is really low .... how to tune it 
for best performance ?

Thanks

-- 
Gr�gory Duchatelet <gregory@adsis.fr>
Ing�nieur syst�mes & r�seaux
ADSiS - Technologies Open-Source
http://www.adsis.fr/ - <contact@adsis.fr>

Re: [linux-lvm] LVM is low

[Grégory Duchatelet]

Gr�gory Duchatelet a �crit :

> Hi list,
>
> I install a server with LVM partitions with ReiserFS, server runs 
> OpenLDAP, Tomcat5, Apache2, Samba, etc....
>
> Comparing with native ReiserFS, LVM is really low .... how to tune it 
> for best performance ?
>
> Thanks
>
please, help !

or any links to howtos or wiki or documentations ...

-- 
Gr�gory Duchatelet <gregory@adsis.fr>
Ing�nieur syst�mes & r�seaux
ADSiS - Technologies Open-Source
http://www.adsis.fr/ - <contact@adsis.fr>

Re: [linux-lvm] LVM is low

[Jonathan Sambrook]

Gr�gory Duchatelet wrote:
> Gr�gory Duchatelet a �crit :
> 
>> Hi list,
>>
>> I install a server with LVM partitions with ReiserFS, server runs
>> OpenLDAP, Tomcat5, Apache2, Samba, etc....
>>
>> Comparing with native ReiserFS, LVM is really low

Could you try explaining "really low" some more?

Regards,
Jonathan

>> .... how to tune it
>> for best performance ?
>>
>> Thanks
>>
> please, help !
> 
> or any links to howtos or wiki or documentations ...
> 

Re: [linux-lvm] LVM is low

[Grégory Duchatelet]

Jonathan Sambrook a �crit :

>Gr�gory Duchatelet wrote:
>  
>
>>Gr�gory Duchatelet a �crit :
>>
>>    
>>
>>>Hi list,
>>>
>>>I install a server with LVM partitions with ReiserFS, server runs
>>>OpenLDAP, Tomcat5, Apache2, Samba, etc....
>>>
>>>Comparing with native ReiserFS, LVM is really low
>>>      
>>>
>
>Could you try explaining "really low" some more?
>  
>
I copy lots of files with scp, from an old server to this new one with 
LVM. The system is unsuable during the copy, but not with a server with 
standards partitions...

-- 
Gr�gory Duchatelet <gregory@adsis.fr>

Re: [linux-lvm] LVM is low

[Alan Jurgensen]

Why dont you create a 'regular' reiserfs partition on the same server 
and re-try your transfer.

Comparing to another server isnt really fair; too many other factors: OS 
level, Network, Config, Server Load, Hardware, Disks, etc.

Scp isn't a good gauge of disk performance, as its bottlenecks are 
network and CPU (decryption). Why not try 'bonnie', a disk benchmarker.


>>
>> Could you try explaining "really low" some more?
>>  
>>
> I copy lots of files with scp, from an old server to this new one with 
> LVM. The system is unsuable during the copy, but not with a server 
> with standards partitions...
>

-- 

----------------------------------------------------------------------
Alan W. Jurgensen - Berbee Information Networks - jurgensen@berbee.com 

Re: [linux-lvm] LVM is low

[Grégory Duchatelet]

Alan Jurgensen a �crit :

> Why dont you create a 'regular' reiserfs partition on the same server 
> and re-try your transfer.
>
> Comparing to another server isnt really fair; too many other factors: 
> OS level, Network, Config, Server Load, Hardware, Disks, etc.
>
> Scp isn't a good gauge of disk performance, as its bottlenecks are 
> network and CPU (decryption). Why not try 'bonnie', a disk benchmarker.

This server has a regular reiserfs partition earlier, i just reinstall 
it with LVM, and now i didn't need benchmarkers to see that write access 
is really really low !! :-(

-- 
Gr�gory Duchatelet <gregory@adsis.fr>
Ing�nieur syst�mes & r�seaux
ADSiS - Technologies Open-Source
http://www.adsis.fr/ - <contact@adsis.fr>

Re: [linux-lvm] LVM is low

[Dan Stromberg]

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On Wed, 2005-06-22 at 15:51 +0200, Grégory Duchatelet wrote:
> Jonathan Sambrook a écrit :
> 
> >Grégory Duchatelet wrote:
> >  
> >
> >>Grégory Duchatelet a écrit :
> >>
> >>    
> >>
> >>>Hi list,
> >>>
> >>>I install a server with LVM partitions with ReiserFS, server runs
> >>>OpenLDAP, Tomcat5, Apache2, Samba, etc....
> >>>
> >>>Comparing with native ReiserFS, LVM is really low
> >>>      
> >>>
> >
> >Could you try explaining "really low" some more?
> >  
> >
> I copy lots of files with scp, from an old server to this new one with 
> LVM. The system is unsuable during the copy, but not with a server with 
> standards partitions...

http://dcs.nac.uci.edu/~strombrg/slowdown/


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