我们的Centos6 x64_64系统的Xen宿主内核出现了一些日志，相应状况有网络丢包的现象发生。nf_conntrack: table full, dropping packet. nf_conntrack: table full, dropping packet. nf_conntrack: table full, dropping packet. nf_conntrack: table full, dropping packet. nf_conntrack: table full, dropping packet. nf_conntrack: table full, dropping packet. nf_conntrack: table full, dropping packet. nf_conntrack: table full, dro ---->>阅读完整内容

Xen有些时候一些GUEST OS系统正常运行中但是网络断了，直接重启后网络又恢复了。 从dmesg里面查看相应的信息发现出现了Too many fragsvif vif-162-0: vifXEN_NAME.0: Too many frags vif vif-162-0: vifXEN_NAME.0: fatal error; disabling devicegoogle了一下从一些mail list里面找到了解决办法，就是关闭tx和tso以及gso.先查看网卡ethtool -k 网卡运行命令会得到以下返回数据(一些机器返回的结果可能会有出入)[root@node75 ~]# ethtool -k eth0 Features for eth0: rx-checksumming: on tx-checksumming: on tx-checksum-i ---->>阅读完整内容

服务器top进程上进程看到kipmi0经常占用很高的CPU甚至是100%看看专业的说法： kipmi is supposed to run with low priority. When you say it consumes 70-90% of the CPUs, is that constant (does it still consume the processor when they are other tasks in the process queue that should have a larger slice of the CPU time) or the 70%/90% comes when the machine is idle? A second issue to investigate is whether you have pendin ---->>阅读完整内容