[pve-devel] little iops with PVE kernel than vanilla 3.5

[Stefan Priebe - Profihost AG]

Am 22.07.2012 09:47, schrieb Martin Maurer:
>>>
>>> Give all details (Hardware, Software, used benchmark command) and I will
>> try to reproduce it in the lab.
>>
>> thanks
>>
>> Storagesystem:
>> Raid 0 of 16 Intel 520 series SSD
>> exported via LIO iSCSI
>> 10GBE Network
>> Debian Squeeze
>> Kernel 3.5-rc7
>> Single Xeon E5 1620
>>
>> Proxmoxsystem:
>> Proxmox 2.1 from iso with latest git packages open-iscsi 2.0-873 with 4 sessions
>> and multipath Dual Xeon E5-2640 LVM on top of iscsi block device
>>
>> disks set to noop scheduler.
>>
>> Benchmark command:
>> fio --filename=$DISK --direct=1 --rw=randwrite --bs=4k --size=200G
>> --numjobs=50 --runtime=90 --group_reporting --name=file1
>>
>> Anything else you need?
>
> Yes, I would like to have such a hardware (storagesystem and 10gbit network) in our test lab. Currently our test lab can´t compete with yours.

Any information/tests i can provide? I really would like to use the 
official PVE kernel but with half the iops...

Greets
Stefan