Hi, I'm going to receive a new small laptop with a 500 GB 5400 RPM mechanical "ole' rust" HD, and I plan ton install BTRFS on it. It will have a kernel 3.13 for now, until 3.14 gets released. However I'm still concerned with chronic BTRFS dreadful performance and still find that BRTFS degrades much over time even with periodic defrag and "best practices" etc. So I'd like to start with the best possible options and have a few questions : - Is it still recommended to mkfs with a nodesize or leafsize different (bigger) than the default ? I wouldn't like to lose too much disk space anyway (1/2 nodesize per file on average ?), as it will be limited... - Is it recommended to alter the FS to have "skinny extents" ? I've done this on all of my BTRFS machines without problem, still the kernel spits a notice at mount time, and I'm worrying kind of "Why is the kernel warning me I have skinny extents ? Is it bad ? Is it something I should avoid ?" - Are there other optimization tricks I should perform at mkfs time because thay can't be changed later on ? - Are there other btrfstune or mount options I should pass before starting to populate the FS with a system and data ? - Generally speaking, does LZO compression improve or degrade performance ? I'm not able to figure it out clearly. TIA for the insight. -- Swâmi Petaramesh <swami@petaramesh.org> http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html