Hi, On a 4gb 64 bit centos kvm guest per libvirt <memory>4194304</memory> <currentMemory>4194304</currentMemory> but in dmesg of the guest I find Memory: 4039712k/5242880k available (2592k kernel code, 154076k reserved, 1653k data, 224k init) Why is dmesg reporting 5g of ram ? Or am I reading wrong ? How much memory on the Host is necessary on the kvm host for this "4g" machine in the worst case (I try to not overcommit for now). I want to avoid the situation that this "4g" machine requires "5g". A 4gb 32 bit machine is reporting expected values Memory: 3102712k/4194304k available (2190k kernel code, 41592k reserved, 911k data, 228k init, 2228160k highmem) All of the above lead to the following more generic question: How many percent of the Host RAM may I safely give to guests (without overcommiting) ? -- Kind Regards, Markus Falb
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