Re: [Clonezilla-live] on-the-fly performance

[Lukas G. <luk...@co...>]

On 12.04.2010 03:39, Steven Shiau wrote:
> 
> 
> On 2010/4/9 下午 03:50, Lukas Grässlin wrote:
>> On 31.03.2010 11:10, Steven Shiau wrote:
>>> Right now I do not have real machines which I can test. Therefore I can
>>> not give you the numbers.
>>> If anyone on this forum has such numbers to share, please share that.
>>>
>>> BTW, there is a performance improvement in partclone 0.2.8, and it's now
>>> included in clonezilla live 20100330-karmic. Could you please give it a
>>> try? To see if any big difference.
>>> Please let us know the results if you try that.
>>
>> So, I tried the 20100330 clonezilla ISO and the results with the speed
>> are the same. I think the main reason for that bad speed is, that on the
>> client side (the vm, where the physical machine is migrated to) the
>> partclone.restore process procudes almost 100% CPU load. (It's s a vm
>> with two cores, but it only uses one).
>> I think that is the main bottleneck.
> What's the memory size you have on the vm?

1 GB, but I can't remember how much was used. I will do a retest.

> 
> Steven.
>>
>>>
>>> Regards,
>>> Steven.
>>>
>>> On 2010/3/29 下午 11:31, Lukas Grässlin wrote:
>>>> Both SATA Disks, the destination is a virtual machine but I did some
>>>> IO-Performance tests with dd on the virtual machine. It is definitely
>>>> able to write and read with more than 20MB/s. (I did dd if=/dev/sda
>>>> of=/dev/zero bs=100M count=10 etc.)
>>>>
>>>> The network can't really limit the speed, so I don't know what is
>>>> could be.
>>>>
>>>> What's your experience with the speed? Is it faster?
>>>>
>>>> I'll do some tests on my own with dd and netcat or so.
>>>>
>>>> ((sorry, forgot to click the reply-all button ;) ))
>>>>
>>>>
>>>> On 29.03.2010 16:26, Steven Shiau wrote:
>>>>> How about the speed when you save the image?
>>>>> What's the disk types in the source and destination machines? SATA?
>>>>> PATA? USB? Or?
>>>>>
>>>>> Steven.
>>>>>
>>>>> Lukas Grässlin wrote:
>>>>>> Hi,
>>>>>>
>>>>>> whats's you experience with the onthefly migration (that partclone
>>>>>> over
>>>>>> netcat thing) especially perfomance?
>>>>>>
>>>>>> I never get more than ~300MB/min (=~ 5MB/s) in a Gigabit network
>>>>>> which
>>>>>> is very dissappoiting. I already tried it without compression etc
>>>>>> but I
>>>>>> didn't get more speed. (Further the machines are fast enough to do it
>>>>>> faster than 5MB/s with compression).
>>>>>>
>>>>>> Is that a partclone issue? Have you any ideas?
>>>>>>
>>>>>> Regards,
>>>>>> Lukas
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>>
>>
>>
> 


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Lukas Grässlin

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