Hiya,

We're all learning!

Cheers,

Luis.




On 23 Jan 2009, at 08:25, Tiemo Hollmann TB wrote:

Just to give you a feedback of my further tests.

1. The main performance difference is between Notebooks (average: 2,4MB/s)
and Desktops (average: 4,2MB/s), because of HW differences.
2. The very slow performance of the MacBook was because of a CD burned on Win. When burning the same datas on the Mac, the performance was almost
exact the same between a comparable Win Notbook and MacBook
3. The chunk size for read/write has between 4096 bytes and 10MB almost no significant performance difference. Lower than 4096 bytes the performance decreased dramatically, with a chunk size of 512 bytes I had only 0,4MB/s.
Probably because her the performance part of my repeat loop comes into
account.

My conclusion is, I'll go with a chunk size of 4096 bytes and will tell my customers, that the installation of my 7GB will take between 30 and 90 min, depending on the performance of their machines. (I even had a betatester, where it took 140min on a 3 year old Win Notebook, but I hope it is a single
outlier)

Thanks Luis and Florian to point me to the right direction.
Tiemo


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