Hi
I seem to have an issue where the upstream keepalives aren’t being
re-used
proxy_http_version 1.1;
upstream dev1 {
server 10.0.0.11 max_fails=0;
keepalive 1024;
}
location /
{
proxy_pass http://dev1;
proxy_set_header Connection “”;
}
On a separate server I run ‘ab -n 500 -c 500
http://10.0.0.10/test/blah.txt’ … a few times waiting say 10 seconds
between runs
on the main server I can do netstat between runs, here’s the results:
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
2
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
260
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
758
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
950
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
1308
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
1748
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
1992
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
2316
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
2767
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
3063
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
3392
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
3491
root@dev0:/root # netstat -n | grep “10.0.0.11.80” | grep “ESTAB” | wc
-l
3787
It shouldn’t ever need more than 500 connections to the upstream, but it
keeps making more? and doesn’t stick to the 1024 limit…
What’s going on?
nginx/1.4.1 / FreeBSD 9.1