Allocating All Available Memory to VMs


Jan 1, 2010

My PVE box only has 8GB RAM, & I run 2 KVMs- one with 4GB, & the other with 3GB.

I'm wondering if I can allocate 4GB to the one which currently only has 3GB, and still have enough for the underlying host processes to run unencumbered.

I don't use ballooning, as it's been problematic in the past- in one case I had a Blue Screen, & another time I had a compiler unable to utilize the additional RAM as it became available. So I have a bad taste in my mouth from that & haven't used dynamically allocated RAM since then- a few years ago.

Would PVE know to prioritize its own processes if I allocate 4 & 4? Or should I leave it with 1GB available to PVE?


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