On Tue, Jan 16, 2018 at 7:47 AM, Neto pr <netoprbr9@xxxxxxxxx> wrote: > Hi all > > Sorry, but I'm not sure that this doubt is appropriate for this list, but I > do need to prepare the file system of an SSD disk in a way that pointed me > to, which would be a way optimized SSD > to work. I have a disk: SSD: Samsung 500 GB SATA III 6Gb/s - Model: 850 Evo > http://www.samsung.com/semiconductor/minisite/ssd/product/consumer/850evo/ > > One person on the list me said that should be partition aligned to 3072 not > default 2048, to start on erase block bounduary. And fs block should be 8kb. > > Can you give me a hint of what program I could do this. I have already used > fdisk but I do not know how to do this in Fdisk. I used Linux Debian > 8(Jessie) 64b with Ext4 File system. fdisk is pretty old and can't handle larger disks. You can get a fair bit of control over the process with parted, but it takes some getting used to. As far as I know, linux's ext4 has a maximum block size of 4k. I can't imagine alignment matters to SSDs and I would take any advice as such with a large grain of salt and then if I had questions about performance I'd test it to see. I'm willing to bet a couple bucks it makes ZERO difference. > > If you prefer, just reply to me, since the subject would not be about > postgresql itself. netoprbr9@xxxxxxxxx No this affects everybody who uses SSDs so let's keep it on list if we can.
