#白牌交换机OEM合作考虑 是否有长期从事网络设备研发？ 成功的网络产品，部署规模。 分工方式：设计、代工 ？？ 需求、问题对接人员？ 出差问题？ 人员数量、稳定性？ 试生产规模？ 版本控制 bug管理 patch方式 产品交付 产品硬件specification BIOS手册 配置项default值，原因 微码版本 ME版本 CPU Errata (specification update) 内部测试测试项（软件、硬件）以及测试结果 与上游（CPU、MAC）厂商的更新机制（Errata、Bug notification）。 周期

This management engine is a processor connected to every peripheral in a system.The ME has complete access to all of a computer’s memory, network connections, and every peripheral connected to a computer.The ME runs when the computer is hibernating and can intercept TCP/IP traffic.Management Engine ...

NMI watchdog编辑 /boot/grub/menu.lst文件添加 nmi_watchdog=1 或 nmi_watchdog=2 到启动选项 检查是否激活了NMI watchdog grep NMI /proc/interrupts dmesg | grep -i IOAPIC 配置Linxu在接收到未知NMI时候调用panic routine sysctl kernel.unknown_nmi_panic

You may also want to look at Debian’s kdump-tools package to automate some of the necessary boot-time steps. The steps are roughly, sudo apt-get install kdump-tools Set USE_KDUMP=1 in /etc/default/kdump-tools Add crashkernel=128M to the kernel command-line given in bootloader configuration (e.g. /e ...

SSH共用同一个TCP会话 ~/.ssh/config Host * ControlMaster auto ControlPath ~/.ssh/master-%r@%h:%p

CentOS LLDP yum install lldpad lldpad -d for i in `ls /sys/class/net/ | grep "enp216s0f\|p2p"` ; do echo "enabling lldp for interface: $i" ; lldptool set-lldp -i $i adminStatus=rxtx ; lldptool -T -i $i -V sysName enableTx=yes; lldptool -T -i $i -V portDesc enableTx=yes ; ...

fwts硬件测试套件fwts是一个Linux的硬件测试套件，可以测试基本的Linux硬件。 安装编译依赖 sudo apt-get install autoconf automake build-essential libtool libjson0-dev pkg-config bison flex libglib2.0-dev libbsd-dev

Intel cstate可能导致性能下降cstate may use more time to resume, so it will downgrade the system performance. use script below to force c0 #!/usr/bin/env python import sys, time, struct def disable_cstates(): f = open("/dev/cpu_dma_latency", "wb") f.write(struct.pack("i", 0)) f.flush() wh ...

使用python paramiko ssh登录 #!/usr/bin/python import paramiko from time import sleep cnt = 1 while True: print "The ", cnt, " time reboot" ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect("10.97.25.44", 22, "admin", "admin", timeout=6 ...