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Heart.X.Raid:
//非递归后序遍历二叉树
void aftorder_t ...
树的遍历 -
zhangjunji111:
airlink 写道建议你再加个0来循环。
我的测试结果是10 ...
Spring的获取Bean的性能测试。 -
airlink:
建议你再加个0来循环。我的测试结果是10倍以上的差距。spri ...
Spring的获取Bean的性能测试。 -
rmn190:
结果中哪一个是C++的,哪一个Java的呢? 楼主最好用一个t ...
简单的c++排序跟java的性能比较。仅仅学习。 -
moshalanye:
每个对象都有一个隐含锁静态对象属于Class对象,非晶态对象属 ...
Java里面的同步跟oracle的锁的联想
测试结果的说明:参考文章:http://www.phpchina.com/html/73/5173-4461.html
测试web工程见附件。
用Ibatis中的SqlMapClientDaoSupport获取数据的数据。
数据库表:
DROP TABLE IF EXISTS `product`;
CREATE TABLE `product` (
`P_ID` varchar(45) NOT NULL,
`P_NAME` varchar(45) NOT NULL,
PRIMARY KEY (`P_ID`)
) ENGINE=InnoDB DEFAULT CHARSET=gb2312;
--
-- Dumping data for table `product`
--
/*!40000 ALTER TABLE `product` DISABLE KEYS */;
LOCK TABLES `product` WRITE;
INSERT INTO `product` VALUES ('T00001','宝马汽车'),('T00002','丰田汽车'),('T00003','本田汽车'),('T00004','戴尔电脑'),('T00005','联想'),('T00006','硝酸钾'),('T00007','固体胶');
UNLOCK TABLES;
E:\Program Files\Apache Software Foundation\Apache2.2\bin>ab -n 100 -c 50 http://127.0.0.1:8080/TestWeb/
-n requests Number of requests to perform
-c concurrency Number of multiple requests to make
This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright 2006 The Apache Software Foundation, http://www.apache.org/
Benchmarking 127.0.0.1 (be patient).....done
Server Software: Apache-Coyote/1.1
Server Hostname: 127.0.0.1
Server Port: 8080
Document Path: /TestWeb/
Document Length: 634 bytes
Concurrency Level: 50
Time taken for tests: 0.515625 seconds
Complete requests: 100
Failed requests: 0
Write errors: 0
Total transferred: 86900 bytes
HTML transferred: 63400 bytes
Requests per second: 193.94 [#/sec] (mean)
Time per request: 257.813 [ms] (mean)
Time per request: 5.156 [ms] (mean, across all concurrent requests)
Transfer rate: 162.91 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 3 6.7 0 15
Processing: 0 192 78.1 234 266
Waiting: 0 130 74.6 125 265
Total: 0 196 77.7 234 281
Percentage of the requests served within a certain time (ms)
50% 234
66% 250
75% 250
80% 250
90% 265
95% 265
98% 281
99% 281
100% 281 (longest request)
ab [ -
A
auth-username:
password ] [ -
c
concurrency ] [ -
C
cookie-name=
value ] [ -
d ] [ -
e
csv-file ] [ -
g
gnuplot-file ] [ -
h ] [ -
H
custom-header ] [ -
i ] [ -
k ] [ -
n
requests ] [ -
p
POST-file ] [ -
P
proxy-auth-username:
password ] [ -
q ] [ -
s ] [ -
S ] [ -
t
timelimit ] [ -
T
content-type ] [ -
v
verbosity] [ -
V ] [ -
w ] [ -
x
<table>-attributes ] [ -
X
proxy[:
port] ] [ -
y
<tr>-attributes ] [ -
z
<td>-attributes ] [http://]
hostname[:
port]/
path
-A
auth-username:
password
Supply BASIC Authentication credentials to the server. The username and password are separated by a single :
and sent on the wire base64 encoded. The string is sent regardless of whether the server needs it (i.e., has sent an 401 authentication needed).
-c
concurrency
Number of multiple requests to perform at a time. Default is one request at a time.
-C
cookie-name=
value
Add a Cookie:
line to the request. The argument is typically in the form of a name=
value pair. This field is repeatable.
-d
Do not display the "percentage served within XX [ms] table". (legacy support).
-e
csv-file
Write a Comma separated value (CSV) file which contains for each percentage (from 1% to 100%) the time (in milliseconds) it took to serve that percentage of the requests. This is usually more useful than the 'gnuplot' file; as the results are already 'binned'.
-g
gnuplot-file
Write all measured values out as a 'gnuplot' or TSV (Tab separate values) file. This file can easily be imported into packages like Gnuplot, IDL, Mathematica, Igor or even Excel. The labels are on the first line of the file.
-h
Display usage information.
-H
custom-header
Append extra headers to the request. The argument is typically in the form of a valid header line, containing a colon-separated field-value pair (i.e., "Accept-Encoding: zip/zop;8bit"
).
-i
Do HEAD
requests instead of GET
.
-k
Enable the HTTP KeepAlive feature, i.e., perform multiple requests within one HTTP session. Default is no KeepAlive.
-n
requests
Number of requests to perform for the benchmarking session. The default is to just perform a single request which usually leads to non-representative benchmarking results.
-p
POST-file
File containing data to POST.
-P
proxy-auth-username:
password
Supply BASIC Authentication credentials to a proxy en-route. The username and password are separated by a single :
and sent on the wire base64 encoded. The string is sent regardless of whether the proxy needs it (i.e., has sent an 407 proxy authentication needed).
-q
When processing more than 150 requests, ab
outputs a progress count on stderr
every 10% or 100 requests or so. The -q
flag will suppress these messages.
-s
When compiled in (ab -h
will show you) use the SSL protected https
rather than the http
protocol. This feature is experimental and very rudimentary. You probably do not want to use it.
-S
Do not display the median and standard deviation values, nor display the warning/error messages when the average and median are more than one or two times the standard deviation apart. And default to the min/avg/max values. (legacy support).
-t
timelimit
Maximum number of seconds to spend for benchmarking. This implies a -n 50000
internally. Use this to benchmark the server within a fixed total amount of time. Per default there is no timelimit.
-T
content-type
Content-type header to use for POST data.
-v
verbosity
Set verbosity level - 4
and above prints information on headers, 3
and above prints response codes (404, 200, etc.), 2
and above prints warnings and info.
-V
Display version number and exit.
-w
Print out results in HTML tables. Default table is two columns wide, with a white background.
-x
<table>-attributes
String to use as attributes for <table>
. Attributes are inserted <table
here >
.
-X
proxy[:
port]
Use a proxy server for the requests.
-y
<tr>-attributes
String to use as attributes for <tr>
.
-z
<td>-attributes
String to use as attributes for <td>
.
相关链接
ab 是 Apache 的一个安装组件,所以需要下载 Apache 安装后才能使用,可以访问 Apache 的项目主页来下载 http://httpd.apache.org/download.cgi
ab 的更多信息可以参加 Apache 主页上的描述
http://httpd.apache.org/docs/2.0/programs/ab.html
评论
Requests per second: 3.09 [#/sec] (mean)
请问,每秒事务数是什么意思啊?
n 是请求的次数。。用并发50量,请求100次。。求测试结果。
暂时这么理解的。
还请再找更精确的。答案。
Requests per second: 3.09 [#/sec] (mean)
请问,每秒事务数是什么意思啊?
我没有用过ab和LR,但是对这个挺感兴趣的,请教下!
还有就是-c 50这个参数的意思是50个并发的连接吗?
那-n 100,又是什么意思??
谢谢
发表评论
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Java里面的同步跟oracle的锁的联想
2009-07-16 08:21 1120暂时不讨论。不明白 -
想做一个JMSServer,实现10000/s可以吗?
2009-07-02 17:51 974本贴已经删除,有很多东西需要学习。谢谢大大家给予的建议和批评啊 ... -
Spring的事务管理例子代码
2009-06-27 10:29 3369事务管理: 分global事务管理和local事务管理, ... -
Java String中的hashCode函数
2009-06-27 09:43 4222String 类中的hash函数如下: public ... -
java中HashCode的作用和Map的实现结构
2009-06-25 22:50 3828Map 是一种数据结构,用来实现key和value 的映射。通 ... -
使用Spring后会带来什么好处
2009-06-23 16:20 8881 为你的项目增加一个管家,你不必写很多的代码去实现一些框架已 ... -
jboss EJB
2009-06-15 14:39 746暂时不讨论。不明白 -
简单的归并排序算法例子
2009-06-14 21:36 1012import java.util.ArrayList;impo ... -
Jboss消息中间件跟IBM MQ的比较
2009-06-12 21:28 1556简单说几点. 1 jboss消息以java编写,嵌入到jbo ... -
Jboss message point to point
2009-06-12 21:17 846下面的例子程序是从Jbos ... -
Jboss SubscriberClient 主动式接受消息
2009-06-11 21:35 663下载jboss后面,按照默认启动就可以。 packag ... -
http报文
2009-06-11 21:09 2522HTTP报文是面向文本的,报文中的每一个字段都是一些ASCII ... -
面向对象的三个特征
2009-06-11 20:52 742面向对象的三个基本特征是:封装、继承、多态。 Th ... -
java的同样排序函数的执行效率
2009-06-11 20:50 1228package com.liuxt.sort; import ... -
java虚拟机规范 3.5 运行期数据区
2009-06-10 14:35 887http://java.sun.com/docs/books/ ... -
java SQL注入分析程序
2009-06-09 22:11 1889DROP TABLE IF EXISTS `user`;CRE ... -
java virtural machine data type
2009-06-08 16:35 646data ... -
parse xml file with dom and sax .
2009-06-07 13:47 824基于dom方式的dom4j和jdom以及JDK提供的dom方式 ... -
memcached 的linux配置
2009-06-03 22:45 647详细参选下面的连接: http://www.ccvita.co ... -
memcached 的java 客户端的简单测试代码
2009-06-03 22:42 1510import java.io.IOException; imp ...
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