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fengzipei's Github gists is deprecated. For further notes, please go to https://fengzipei.github.io/

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zlib usage

以下是zlib的官方示例，这里对代码进行一些说明。

/* zpipe.c: example of proper use of zlib's inflate() and deflate()
   Not copyrighted -- provided to the public domain
   Version 1.4  11 December 2005  Mark Adler */

/* Version history:

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Configure transparent proxy for router in IPv6 only network

Environment:

Router: ASUS ac66u_b1

OS: asus merlin 384.3

Shadowsocks: shadowsocks-libev 3.1(can support udp relay)

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Use docker behind proxy

When I run docker run hello-world, I get error message "docker: Error response from daemon: Get https://registry-1.docker.io/v2/: x509: certificate has expired or is not yet valid.". Here is the solution to this problem.

1. Create a systemd drop-in directory for the docker service:

   $ mkdir -p /etc/systemd/system/docker.service.d

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Enable bbr on Ubuntu 16.04

1. Make sure kernel version is 4.9 or newer:

   uname -r

   Install Hardware Enablement Stack (HWE) to update kernel automaticly:

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Run crail on Ubuntu 16.04

1. Set HugePages_Total by:

   sudo bash -c "echo 81920 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages"

   Verify it by cat /proc/meminfo.

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Compile Hadoop-2.8 on Ubuntu 16.04

1. Install some dependencies:

   sudo apt -y install gcc*
   sudo apt -y install cmake
   sudo apt -y install glibc-headers
   sudo apt -y install gcc-c++
   sudo apt -y install zip-devel

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Configure fio to support hdfs

1. Configure some environments:

   1. $JAVA_HOME:

      export JAVA_HOME="/usr/lib/jvm/java-8-openjdk-amd64/"

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搭建 Hadoop 集群过程记录

开发环境：Ubuntu 16.04 server

Hadoop 版本：Apache Hadoop 3.0.0-alpha4

openjdk 版本：1.8.0_131

单节点模式（Local Mode）

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EAX - Accumulator Register
EBX - Base Register
ECX - Counter Register
EDX - Data Register
ESI - Source Index
EDI - Destination Index
EBP - Base Pointer
ESP - Stack Pointer