Blacksmith test

最近使用Blacksmith 对各种K,V数据库做了一些测试，从中了解了一些各种数据库的设计方式，比较各种数据库的性能

BlaskSmith是我们自己的产品，详细的产品信息可以在github上看到 https://github.com/lawrencewu/blacksmith

测试的数据库包括 bigmap， sessdb(https://github.com/lawrencewu/sessdb), leveldb(https://github.com/dain/leveldb)

berkeleyDB(http://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html)  java edition

mapdb http://www.mapdb.org

以下的内容讲述如何使用Blacksmith对各种k,v数据库做测试

准备工作

1. download the blacksmith from github, it's a maven project

the download address is https://github.com/lawrencewu/blacksmith

2. Install

$ unzip blacksmith.zip
$ cd blacksmith
$ mvn clean install

3. run the test

$ target/distribution/BlackSmith-1.0.0
$ bin/local.sh

4. run the high level test by trying

$ target/distribution/BlackSmith-1.0.0
$ bin/local.sh -c conf/local-benchmark-high-contention.xml

5. run the low level test by trying

$ target/distribution/BlackSmith-1.0.0
$ bin/local.sh -c conf/local-benchmark-low-contention.xml

6. after the above operation, we can get the report under the  reports folder.

i.e. the comparison between different databases.

How to add a plugin:

　　The tool's only useful when you add another plugin to test other k,v databases. This senario shows how to add a plugin

　　Step1:

　　　　Add a folder under the plugins folder, named it whatever you like  e.g.  test

Step2:

Implements the  DBWrapper interface

Step3:

Replace the property file with your wrapper

step4:

config the project pom.xml file， add this plugin to the  module section, and copy files to the destination location

you can try different test schema by changing the params in the StressTest tag.

Params specification:

　　1. numRequests

Total number of operation to be made against cache wrapper: reads + writes. Default is 50000.

2. numEntries

　　　　Number of keys on which all the GETs and PUTs are performed. Default is 100.