Does LVM affect performance

[WipeOut]

Stratos Laspas wrote:
> στις 12/04/2007 05:24 μμ, O/H WipeOut έγραψε:
>> Hi,
>>
>> Pretty simple questions but probably not such a simple answer..
>>
>> Does using LVM affect disk and system performnace?
>>
>> There must be some overhead involved (memory, cpu or disk IO) in using
>> LVM but is that overhead measurable or is it insignificant if disk 
>> throughput is of significance??
>>
>> Would be interesting to hear your thoughts or from anyone who has tested
>> it..
>>
>> Thanks..
>>
>>
>>   
> Hi there,
> 
> I am using LVM over  two RAID1 pairs of disks, I have not noticed any
> particular performance hit. However, this is just my feeling, I have not
> run any specific tests.
> 

Thanks for the replies.. If I get a chance I will run a couple of tests 
and see if there is any noticeable difference..