[PVE-User] RAID array performance measuring

Frederic Van Espen frederic.ve at gmail.com
Wed Aug 28 11:03:04 CEST 2013

On 08/28/2013 10:07 AM, Frederic Van Espen wrote:
> On 08/28/2013 09:34 AM, Frederic Van Espen wrote:
>> On 08/28/2013 09:13 AM, Dietmar Maurer wrote:
>>> yes, that can make a difference.
>> OK. Anyway, the new machine is also running on ext4. The number of
>> fsyncs/second is a lot higher there (different controller and disks
>> though)
>> In the meantime, I've also set up a testing machine with the same type
>> of controller, but this time with 4 146GB SAS disks in RAID10.
>> Results are similar to the other 2 machines:
>> FSYNCS/SECOND:     219.32
>> I've also tried upgrading the controller firmware to the latest version
>> on this one, but no change.
>> Also on an ext3 filesystem, performance is similar:
>> FSYNCS/SECOND:     220.11

Hmm on yet another machine, same controller, same disks, but this time 
RAID1, with ext3 on top of LVM:
FSYNCS/SECOND:     2308.78

This machine is running a standard debian squeeze however.

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