Zfs being a Maine-coon
this post was submitted on 01 Nov 2024
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Fire up a couple VMs to snuggle with.
% free -h
total used free shared buff/cache available
Mem: 125Gi 15Gi 90Gi 523Mi 22Gi 110Gi
Swap: 63Gi 0B 63Gi
I'll use it eventually. Just gotta let the disk cache warm up.
63GiB swap, really...?
I have enough disk space.
Plus my /tmp is a ramdisk and sometimes I compile large things in there (Firefox) so it is nice to let it be flushed out to disk if there are more important uses for that RAM than holding a file that most likely won't be read again.
I see.. but you only use 15GiB.. Or are there days you actually use up the memory?
Yes. As this is a workstation the memory use is highly variable, >95% of the time I would probably barely notice having 32GiB. But other times it is a huge performance win to have that capacity available. Sometimes I am compiling lots of stuff and 32 compilers running + ample disk cache is very important. Other times I am processing lots of data and other times I am running a few VMs.
It is a bit of a luxury. I think if I was on a tighter budget I would have gone for 64GiB. However the price difference wasn't that much and at least a handful of times I have been quite happy to have that capacity available. And worst case I just have everything sitting in disk cache after a warm up which is a small performance win on every small task.
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