NIC 日志中的 Rx 错误

Question

信息：：

我的刀片机箱中有 6 台 HP ProLiant BL460c G7 服务器。安装了 RHEL6.2 64 位。每台刀片服务器 NIC1 都在使用中，机箱 LAN 电缆仅与交换机连接。交换机配置为自动协商模式。

问题：：

当 TCP 网络负载中等时，所有服务器都会出现数百个 RX 错误。六台服务器中有两台是生产服务器（主备模式），并且 Rx 错误流量最大。

我在相同的生产服务器上运行 org 网站（非商业项目）。通常，站点会有 <500 个集中建立会话，在高峰时段会达到 > 500，我观察到 ESTABLISH 会话<100，然后 RX 错误中没有动静，我正在分享活动生产服务器的详细信息

下面是在我的服务器上设置的用于扩展 TCP 缓冲区值的内核参数：

[root@ ~]# sysctl -p
net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
net.ipv4.ip_local_port_range = 10000 65500
fs.aio-max-nr = 1048576
fs.file-max = 100000
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.core.rmem_default = 16777216
net.core.wmem_default = 16777216
net.core.optmem_max = 40960
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216
net.core.netdev_max_backlog = 50000
net.ipv4.tcp_max_syn_backlog = 32768
net.core.somaxconn = 2048
net.ipv4.tcp_max_tw_buckets = 2000000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_fin_timeout = 20
net.ipv4.tcp_slow_start_after_idle = 0
net.ipv4.udp_rmem_min = 8192
net.ipv4.udp_wmem_min = 8192
net.ipv4.conf.all.send_redirects = 0

net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_keepalive_time = 600
net.ipv4.tcp_keepalive_intvl = 60
net.ipv4.tcp_keepalive_probes = 3
SYSTEM Detail is here ::
[root@ ~]# uname -a
Linux mohit 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64 x86_64 x86_64 GNU/Linux
[root@ ~]# netstat -i
Kernel Interface table
Iface       MTU Met    RX-OK RX-ERR RX-DRP RX-OVR    TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0       1500   0 43061491   2394      0      0 39363458      0      0      0 BMRU
lo        16436   0 12792095      0      0      0 12792095      0      0      0 LRU
You have mail in /var/spool/mail/root
[root@ ~]# ethtool eth0
Settings for eth0:
        Supported ports: [ TP ]
        Supported link modes:   1000baseT/Full
                                10000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes:  1000baseT/Full
                                10000baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: No
        Speed: 1000Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: on
        MDI-X: Unknown
        Supports Wake-on: g
        Wake-on: d
        Link detected: yes

[root@ ~]# ethtool -S eth0|grep error
     rx_errors: 2394
     tx_errors: 0
     rx_crc_errors: 0
     rx_alignment_symbol_errors: 0
     rx_in_range_errors: 0
     rx_out_range_errors: 0
     rx_address_match_errors: 6932