On Wed, Dec 08, 2021 at 06:12:43PM +0100, Julian Andres Klode wrote: > Question: Does zstd --adapt adapt to memory available?
"memory available" is very difficult to actually determine: - is it physical memory on the machine? - is it physical memory reported as "free" in /proc/meminfo? - is it physical memory reported as "available" in /proc/meminfo? - do you count memory used for buffers and caches as free? - do you count memory available via swap as free? - are there rlimits in place on the process that limit how much it can allocate? - are there cgroup controls in place on the process that limit how much it can allocate? - is this process the only meaningful process at the time? or are there other processes on the system that are more important? I haven't actually looked to see if zstd tries to figure out how much memory is free -- maybe it does, maybe it doesn't -- but I'd be worried that relying upon it to do the right thing wouldn't work well for the general case. Thanks
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