Mission
The TPC is a non-profit corporation founded to define transaction processing and database benchmarks and to disseminate objective, verifiable TPC performance data to the industry.
Scope
The term transaction is often applied to a wide variety of business and computer functions. Looked at as a computer function, a transaction could refer to a set of operations including disk read/writes, operating system calls, or some form of data transfer from one subsystem to another.
While TPC benchmarks certainly involve the measurement and evaluation of computer functions and operations, the TPC regards a transaction as it is commonly understood in the business world: a commercial exchange of goods, services, or money. A typical transaction, as defined by the TPC, would include the updating to a database system for such things as inventory control (goods), airline reservations (services), or banking (money).
In these environments, a number of customers or service representatives input and manage their transactions via a terminal or desktop computer connected to a database. Typically, the TPC produces benchmarks that measure transaction processing (TP) and database (DB) performance in terms of how many transactions a given system and database can perform per unit of time, e.g., transactions per second or transactions per minute.
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Linux kernel benchmarks[/COLOR]
To measure Linux kernel performance, five benchmarks were used: LMbench, AIM Benchmark Suite IX (AIM9), chat, dbench, and tbench. The LMbench benchmark times various Linux application programming interfaces (APIs), such as basic system calls, context switching latency, and memory bandwidth. The AIM9 benchmark provides measurements of user application workload. The chat benchmark is a client-server workload modeled after a chat room. The dbench benchmark is a file server workload, and tbench is a TCP workload. Chat, dbench, and tbench are multithreaded benchmarks, while the others are single-threaded benchmarks.
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Linux 内核基准测试程序
为测量 Linux 内核性能，使用了 5 个基准测试程序：LMbench、AIM Benchmark Suite IX（AIM9）、chat、dbench 和 tbench。LMbench 基准测试程序对各种 Linux 应用程序编程接口（API）（例如，基本系统调用、上下文切换延迟和内存带宽）进行计时。AIM9 基准测试程序提供对用户应用程序工作负载的测量。chat 基准测试程序是模仿聊天室的客户机／服务器工作负载。dbench 基准测试程序是文件服务器工作负载，tbench 是 TCP 工作负载。chat、dbench 和 tbench 是多线程基准测试程序，而其它的则是单线程基准测试程序。
from: ibm
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