qemu-kvm swapping even though vm.swappiness = 0

on a 64gb ram node with 1gb swap i have swappiness=0
but still i see qemu-kvm swapping and when the swap fills (the kernel?) kills the pids

|  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM TIME+  SWAP COMMAND
 7394 qemu      20   0 1447m 734m 5024 S  0.7  1.1  6:20.96  28m qemu-kvm
 8028 qemu      20   0 1438m 725m 4984 S  0.3  1.1  6:30.10  26m qemu-kvm
12901 qemu      20   0 1430m 717m 4984 S  0.3  1.1  9:09.98  24m qemu-kvm
 4873 qemu      20   0 1443m 723m 4984 S  0.3  1.1  6:25.04  23m qemu-kvm
13449 qemu      20   0 1431m 719m 5012 S  0.3  1.1  7:06.87  22m qemu-kvm
14323 qemu      20   0 1423m 713m 4984 S  0.3  1.1  7:09.72  22m qemu-kvm
 5928 qemu      20   0 1425m 729m 4984 S  0.3  1.1  8:49.56  22m qemu-kvm
 4566 qemu      20   0 1427m 718m 5024 S  0.7  1.1  6:18.85  21m qemu-kvm
10016 qemu      20   0 1440m 734m 4984 S  0.3  1.1  8:47.30  20m qemu-kvm
 5472 qemu      20   0 1448m 738m 4968 S  0.0  1.1  6:09.98  20m qemu-kvm
11653 qemu      20   0 1441m 736m 4984 S  0.7  1.1  7:01.75  19m qemu-kvm
11294 qemu      20   0 1418m 696m 5020 S  0.3  1.1  6:44.25  19m qemu-kvm

that's a top Op[enter]

[root@node ~]# sysctl vm.swappiness
vm.swappiness = 0

[root@node ~]# free -m
total used free shared buffers cached

Mem:         64394      35944      28450          0 9531       6564
-/+ buffers/cache:      19848      44545

Swap: 1021 575 446

:(
sad panda.
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