On Tue, Oct 30, 2012 at 6:04 AM, ching <lsching17@xxxxxxxxx> wrote: > Hi all, > > I am testing my btrfs root partition with "max_inline=0", and 64k leaf size for weeks and it seems that it is fine. > > > AFAIK btrfs inline small files into metadata by default, I am curious why? > > If there is only a few small files, then there will be neither effect nor benefit at all > If there is a lot of small files, then the size of metadata will be undesirable due to deduplication > > there are also some email threads related to problem of metadata inline (i don't know whether they are fixed in recent kernel): > http://www.mail-archive.com/linux-btrfs@xxxxxxxxxxxxxxx/msg16295.html > http://www.mail-archive.com/linux-btrfs@xxxxxxxxxxxxxxx/msg05265.html > > How about turning off inline so that btrfs works better "out of the box"? > > ching > I did some rough benchmarking around this a few weeks ago. I'll try to clean up my method and post the results. I was working with multiple copies and rsyncs of kernel sources, which have many candidate files for inlining. To my surprise, my btrfs benchmarks were always the same or faster when I let btrfs inline the files, even though metadata was much larger. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
