超过2k连接的Ubuntunetworking性能

我正在使用超过3k线程的EC2 c3.8xlarge Ubuntu 14.04 LTS机器同时下载网页。

虽然这台机器应该具有10Gb的networking性能,但我无法达到10MB / s以上的性能。

有什么办法可以提高我的机器的networking速度吗?

我的/etc/sysctl.conf

net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_syncookies = 0 net.ipv4.ip_forward = 0 net.ipv6.conf.all.forwarding = 0 fs.file-max = 262144 net.ipv4.tcp_keepalive_time = 60 net.ipv4.tcp_fin_timeout = 30 net.ipv4.tcp_tw_reuse = 1 net.ipv4.conf.all.log_martians = 0 net.ipv4.ip_local_port_range = 1024 65000 net.core.somaxconn = 1024 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 net.ipv4.tcp_mem = 16777216 16777216 16777216 net.ipv4.tcp_max_orphans = 262144 net.core.netdev_max_backlog = 2000 net.ipv4.route.flush=1