> I want to capture uncompressed video at 30 fps, so I need a good write > performance. What filesystem will give me the best performance, supposing > the filesystem will be empty and will write only one file? Write raw to the partition > performance? How would be the performance? Would Linux write 512 bytes at > a time or could I set it? If you are using O_DIRECT raw I/O its in multiples of 512 as you write it and DMA directly from user space. For non O_DIRECT its buffered up sanely In actual fact I suspect you are not going to be able to do it without a lot of RAM and pretty high end disk subsystems.
