Speaking of RAM and disks, does anyone know what happens if you structure LVM volume such that there is a RAM based tmpfs as a front cache? Consistency issues aside, could it increase performance? Suppose I have an application that behaves such that it has very IO heavy write buffer of around 100GB with 10x or so NVMe backed storage for more rarely used data. Would
you do something else? The main problem I have currently is that the NVMes overheat occasionally from high IOPS which adds a lot of latency variance.
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