Le 17/07/2018 à 15:50, Robert Zenz a écrit : > On 17.07.2018 15:44, Nicolas Charles wrote: >> - Partitions is not correctly aligned on the SSD blocks > Does that really make a noticeable difference? If yes, have you got some further > reading material on that? I was pretty sure it was, but looking at the litterature, it's not that obvious. Especially https://blog.pgaddict.com/posts/postgresql-performance-on-ext4-and-xfs seems to mentions that it doesn't change a thing, while others stress out that it is mandatory ( https://www.alibabacloud.com/forum/read-415, https://www.thomas-krenn.com/en/wiki/Partition_Alignment ) Even on mecanical drives it's been reported to cause slowdown ( https://www.ibm.com/developerworks/library/l-linux-on-4kb-sector-disks/index.html ) Maybe the OS are more clever now, making it not so important as before ? Nicolas
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