Система Debian GNU/Linux 6.0.2.1 wheezy
Система Linux foothold.ru 2.6.32-5-amd64 #1 SMP Tue Jun 14 09:42:28 UTC 2011 x86_64 GNU/Linux
Мой сервер foothold.ru
Днс провайдера 195.2.240.3
Сервер свой и стоит в том же Датацентре.
➜ ~ cat /etc/resolv.conf
nameserver 195.2.240.3
➜ ~ cat /etc/sysctl.conf
net.ipv4.ip_local_port_range=1024 65000
fs.file-max = 6553600
# General gigabit tuning:
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216
net.ipv4.tcp_syncookies = 1
# this gives the kernel more memory for tcp
# which you need with many (100k+) open socket connections
net.ipv4.tcp_mem = 50576 64768 98152
net.core.netdev_max_backlog = 10000
# I was also masquerading the port comet was on, you might not need this
#net.ipv4.netfilter.ip_conntrack_max = 1048576
#net.ipv4.netfilter.ip_conntrack_max=1548576
Проблема:
Пинг с foothold.ru:
➜ ~ ping 195.2.240.3
PING 195.2.240.3 (195.2.240.3) 56(84) bytes of data.
64 bytes from 195.2.240.3: icmp_req=1 ttl=62 time=32.8 ms
64 bytes from 195.2.240.3: icmp_req=2 ttl=62 time=43.3 ms
64 bytes from 195.2.240.3: icmp_req=3 ttl=62 time=41.3 ms
64 bytes from 195.2.240.3: icmp_req=4 ttl=62 time=34.6 ms
64 bytes from 195.2.240.3: icmp_req=5 ttl=62 time=23.9 ms
64 bytes from 195.2.240.3: icmp_req=6 ttl=62 time=37.4 ms
64 bytes from 195.2.240.3: icmp_req=7 ttl=62 time=56.5 ms
64 bytes from 195.2.240.3: icmp_req=8 ttl=62 time=19.4 ms
64 bytes from 195.2.240.3: icmp_req=9 ttl=62 time=19.9 ms
Пинг с другово сервера, который находится в другом датаценте
a9607088@msk-f148:~> ping 195.2.240.3
PING 195.2.240.3 (195.2.240.3) 56(84) bytes of data.
64 bytes from 195.2.240.3: icmp_seq=1 ttl=58 time=8.36 ms
64 bytes from 195.2.240.3: icmp_seq=2 ttl=58 time=8.24 ms
64 bytes from 195.2.240.3: icmp_seq=3 ttl=58 time=8.76 ms
64 bytes from 195.2.240.3: icmp_seq=4 ttl=58 time=9.45 ms
64 bytes from 195.2.240.3: icmp_seq=5 ttl=58 time=8.33 ms
На этой машине много привязано Ип адресов ( около 12000 ), но с тех серверов, с которых я переехал на новый сервер такой проблемы не было.
Установка своего сервера DNS не помогла.