3
votes
2answers
123 views

How can I keep important VMs in memory without disabling swap?

VM Host -> Xenon E5-2440 w/ 48G mem... Everything runs CentOS6.5 (2.6.32-431) I have 4 guest VMs running each w/ 2G of memory. Their disk images are local files. The host machine is also running a ...
0
votes
2answers
240 views

KVM under CentOS, swap exhausted, physical memory available

I've had a test CentOS KVM host running for about a week now with 3 CentOS guests. There's 12GB physical RAM with about 7.5GB actually allocated to VMs. These VMs aren't even being used yet as the ...
3
votes
1answer
1k views

Why does host swap out VMs when there are 16GB of buffer cache and swappiness = 0? [duplicate]

I have a desktop running Ubuntu Quantal using OpenStack Folsom on an Intel i5 with 32 GB RAM and 2 GB swap. I'm running 7 VMs each sized like a EC2 m1.small, so 1.7 GB RAM each. I'm using KVM. As I ...
1
vote
2answers
1k views

Should I use swap in KVM guest?

Now I'm trying to create KVM templates with CentOS and I'm not sure should I create swap partition on guest OS or not. In future it will be lot's of small VPS with 256-1024Mb RAM and if swap partition ...
3
votes
2answers
1k views

Why is my KVM, RHEL6.2 server swapping?

I have a RHEL6.2 server that I'm using to run KVM virtual machines. The server itself has 16 GB of RAM. I want to see the biggest VM I can run on it and not let the qemu-kvm process swap. The VM ...
2
votes
2answers
3k views

How much swap space for a 32GB ubuntu virtualization server?

I looked at many other questions on here regarding swap space, but none that I found really addressed my particular situation. I have an Ubuntu 9.10 64-bit server with 32GB of RAM running as a KVM ...