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

[Steven S. <st...@nc...>]

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?

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
>>>>>
>>>>>
>>>>
>>>
>>>
>>
>
>

-- 
Steven Shiau <steven _at_ nchc org tw> <steven _at_ stevenshiau org>
National Center for High-performance Computing, Taiwan.
http://www.nchc.org.tw
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