On Mon, 2007-03-05 at 22:18 +0800, qwe wrote: > The "free pool" in YAFFS is larger ,but YAFFS select the block for use is > the first find empty block ,if it is more random i think the performace > more well ,am I right? Qwe, Let me see if I understand your question, because it is not clear now. The next Write by YAFFS goes into the next unused block it finds. You think the performance will be better if IT is more random and ask if you are right. You do not say what IT is. Do you mean if the next block to write in is selected randomly rather than being the next block available ? You do not say what measure of performance will be better if this is done. Can you tell us ? If you can write the question again it will be easier to answer. Thanks LvS -- Laurie van Someren Aleph One Ltd Old Courthouse Bottisham CAMBRIDGE CB25 9BA UK t: +44 (0)1 223 811 679 www.aleph1.co.uk -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.