ab是apache自帶的一個(gè)很好用的壓力測(cè)試工具，當(dāng)安裝完apache的時(shí)候，就可以在bin下面找到ab

參數(shù)說(shuō)明及示例

我們可以模擬100個(gè)并發(fā)用戶，對(duì)一個(gè)頁(yè)面發(fā)送1000個(gè)請(qǐng)求

輸入命令：ab -n1000 -c100 //www.companysz.com/

其中-n代表請(qǐng)求數(shù)，-c代表并發(fā)數(shù)

返回結(jié)果:

##首先是apache的版本信息 This is ApacheBench, Version 2.3 <Revision:655654> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.xxx.xxx/ Licensed to The Apache Software Foundation, http://www.apache.org/Benchmarking xxx.xxx.com (be patient)Server Software:    Apache/2.2.19  ##apache版本 Server Hostname:    vm1.xxx.com  ##請(qǐng)求的機(jī)子 Server Port:      80 ##請(qǐng)求端口Document Path:     /xxx.html Document Length:    25 bytes ##頁(yè)面長(zhǎng)度Concurrency Level:   100 ##并發(fā)數(shù) Time taken for tests:  0.273 seconds ##共使用了多少時(shí)間 Complete requests:   1000  ##請(qǐng)求數(shù) Failed requests:    0  ##失敗請(qǐng)求 Write errors:      0  Total transferred:   275000 bytes ##總共傳輸字節(jié)數(shù)，包含http的頭信息等 HTML transferred:    25000 bytes ##html字節(jié)數(shù)，實(shí)際的頁(yè)面?zhèn)鬟f字節(jié)數(shù) Requests per second:  3661.60 [#/sec] (mean) ##每秒多少請(qǐng)求，這個(gè)是非常重要的參數(shù)數(shù)值，服務(wù)器的吞吐量 Time per request:    27.310 [ms] (mean) ##用戶平均請(qǐng)求等待時(shí)間 Time per request:    0.273 [ms] (mean, across all concurrent requests) ##服務(wù)器平均處理時(shí)間，也就是服務(wù)器吞吐量的倒數(shù) Transfer rate:     983.34 [Kbytes/sec] received ##每秒獲取的數(shù)據(jù)長(zhǎng)度Connection Times (ms)        min mean[+/-sd] median  max Connect:    0  1  2.3   0   16 Processing:   6  25  3.2   25   32 Waiting:    5  24  3.2   25   32 Total:     6  25  4.0   25   48Percentage of the requests served within a certain time (ms)  50%   25 ## 50%的請(qǐng)求在25ms內(nèi)返回  66%   26 ## 60%的請(qǐng)求在26ms內(nèi)返回  75%   26  80%   26  90%   27  95%   31  98%   38  99%   43 100%   48 (longest request)

apache的ab工具也算是一種ddos攻擊工具