Re: [PATCH 01/16 v5] pramfs: documentation
From: Pavel Machek
Date: Mon Jan 03 2011 - 02:45:44 EST
> +But the disk-based fs over non-volatile RAM block driver approach has
> +some drawbacks:
> +1. Complexity of disk-based fs: disk-based filesystems such as ext2/ext3/ext4
> + were designed for optimum performance on spinning disk media, so they
> + implement features such as block groups, which attempts to group inode data
> + into a contiguous set of data blocks to minimize disk seeking when accessing
> + files. For RAM there is no such concern; a file's data blocks can be
Yes, and they are also used on 99% of machines out there -> well
Is there fsck for pramfs available, for example?
> + This increases the efficient use of space on the media, i.e. more
> + space is dedicated to actual file data storage and less to meta-data
> + needed to maintain that file data.
So... how big is overhead of pramfs compared to ext2?
Can pramfs handle powerdown at arbitrary time?
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/