And for such "small" writes, how interacts the buffer-cache? In the article it is said that the difference between write rates are because the latency of the drive, the speed of the drive and this kind of things. Buf for small writes the data writed shouldn't be writed on buffer-cache?, and because of that at memory speed? Perhaps I'm wrong, but I think that the difference between write rates might be related to the initialization of I/O functions. In any case, great article. »

I'm thinking about that for a while. It's a interesting research topic and perhaps a good starting point for a PhD thesis. I'm happy that I'm not alone in this madness, and that the head of more experienced people spin like mine when thinking about all this mess. »