I have recently upgraded to Nginx-1.6.0 from 1.4.2 and I am seeing that Nginx is swapping a lot. I have tried reducing vm.swappiness=0 but has not worked. This continues to happen on multiple servers that are running Nginx-1.6.0:

s, 1:16, 2 users, load average: 1.38, 2.32, 4.32
Tasks: 467 total, 1 running, 466 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.2%us, 0.1%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 98993228k total, 59237804k used, 39755424k free, 1715940k buffers
Swap: 101056504k total, 17723588k used, 83332916k free, 16982492k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ SWAP COMMAND
9249 nobody 15 0 7921m 407m 72m S 0.0 0.4 1:21.90 7.3g nginx
14934 nobody 15 0 7909m 428m 52m S 0.0 0.4 3:05.12 7.3g nginx
14935 nobody 15 0 7909m 452m 74m S 0.0 0.5 3:04.70 7.3g nginx
29695 nobody 15 0 7890m 482m 100m S 0.0 0.5 3:54.83 7.2g nginx
17901 nobody 15 0 7884m 497m 98m S 0.0 0.5 3:41.51 7.2g nginx
12293 nobody 15 0 7887m 838m 31m S 0.0 0.9 4:23.38 6.9g nginx
27458 nobody 15 0 7884m 1.2g 77m S 0.0 1.2 4:23.78 6.5g nginx
26695 nobody 15 0 7917m 1.4g 29m S 0.0 1.5 0:49.17 6.4g nginx
21791 nobody 15 0 7915m 1.4g 79m S 0.0 1.5 2:05.57 6.3g nginx
6857 nobody 15 0 7886m 1.4g 125m S 0.0 1.5 3:20.58 6.3g nginx
2120 nobody 15 0 7909m 1.5g 158m S 0.0 1.6 3:28.69 6.3g nginx
2112 nobody 15 0 7909m 1.5g 179m S 0.0 1.6 3:31.30 6.2g nginx
1597 nobody 15 0 7884m 1.5g 56m S 0.0 1.6 4:24.95 6.2g nginx
16478 nobody 15 0 7917m 1.7g 158m S 0.0 1.8 1:12.24 6.1g nginx
3889 nobody 15 0 7884m 1.7g 35m S 0.0 1.8 4:18.66 6.0g nginx
17691 nobody 15 0 7906m 1.7g 88m S 0.0 1.8 3:24.67 6.0g nginx
3856 nobody 15 0 7915m 1.8g 29m S 0.0 1.9 2:00.30 6.0g nginx
16799 nobody 15 0 7884m 1.8g 46m S 0.0 1.9 3:35.74 5.9g nginx
29839 nobody 15 0 7887m 1.8g 85m S 0.0 2.0 3:52.09 5.9g nginx
20319 nobody 15 0 7890m 1.9g 27m S 0.0 2.0 3:16.10 5.8g nginx
670 nobody 15 0 7923m 2.0g 145m S 0.0 2.2 0:22.51 5.7g nginx
7933 nobody 15 0 7908m 2.1g 142m S 0.0 2.2 3:10.39 5.6g nginx
18860 nobody 15 0 7920m 2.2g 600 S 0.0 2.3 0:00.14 5.6g nginx