Siege是(shì)我所用(yòng)過的(de)一(yī)款不(bù)<→₹♥錯(cuò)的(de)網站(zhàn)壓力測試工(gōng)具，它可(k'©™↑ě)以非常容易地(dì)定制(zhì)并發訪問(wèn)人(rén)數±↑ σ(shù)以及并發時(shí)間(jiān)，安裝、使用(&£✘•yòng)也(yě)非常方便，當然它是(shì)在Linux環境下(xià≥♦←)使用(yòng)的(de)，下(xià)面來(lái)對♣®±ε(duì)它作(zuò)一(yī)個(gè)£↓₽♦介紹。
官方網址：http://www.joedog.org/
下(xià)載網址：ftp://ftp.joedog.org/pub/，進入到(dào)ftp://ftp.joedog.org/pub/siege/下(xià)載最新版：
siege-2.70.tar.gz。
安裝解壓：tar zxvf siege- φ2.70.tar.gz，進入到(dào)解壓後的(de)目錄：siege-≥α☆2.70，運行(xíng)命令：
./configure
make
make install
安裝完畢後如(rú)果有(yǒu)錯(cuò)誤，則按照(zhào↔≠€)提示信息處理(lǐ)即可(kě)
輸入：siege –help，如(rú)果安裝沒問(wèn)<✔≤題會(huì)出現(xiàn)以下(xià★≠)類似信息：
SIEGE 2.70
Usage: siege [options]
siege [options] URL
siege -g URL
Options:
-V, –version &n☆bsp; ♠™'& VERSION, prints '±♠the version number.
-h, –help &•&¶nbsp; π↓; &¥✔nbsp; HELP, prints this section.
-C, –config δ →✘; &nΩβ§<bsp; CONFIGURATION, show t♦←he current config.
-v, –verbose ₽δε→; &nbs βεp; VERBOSE, ←∏φprints notification to screen .
-g, –get → &↓→♦nbsp; × GET, p&₽™βull down HTTP headers and display ¶→γthe
transaction. Great for §λ application debugging.
-c, –concurrent=NUM&nγ±bsp; CONCURRENT users, &σdefault is 10
-i, –internet ₩☆©; &nbs&≠σ©p; INT∏™&ERNET user simulation, hits U÷'RLs randomly.
-b, –benchmark &nbs←★®p; B<≠ENCHMARK: no delays betw★φeen requests.
-t, –time=NUMm π₽ TI•↔♣MED testing where “m” is modifie$λr S, M, or H
ex: –time=1H, oneγ×£ hour test.
-r, –reps=NUM ♥×; ♦→♥→; REPS, number of times to run th≠π↔e test.
-f, –file=FILE &nbs •×p; ≈∑ FILE, select a specific URLS FILE.
-R, –rc=FILE >∑¶ &nbs≈₩λ±p; RC, ↔€α specify an siegerc fileλφ♥₹
-l, –log[=FILE] &nb sp; &n✘♥≠✔bsp; LOG to FILE. If FILE is not ∑∏₩×specified, the
default is used: PREFIX/var/si₩✔ ♥ege.log
-m, –mark=&rdqu® πo;text” &"≤ MARK, mark ↔σ≤the log file with a string.
-d, –delay=NUM &ε×®nbsp; Time λ↓DELAY, random delay befor∏≈$"e each requst
between 1 and NUM. (NO∏↕¶☆T COUNTED IN STATS)
-H, –header=”text”&nb≈"Ωsp; Add a heφ§ader to request (can be many)
-A, –user-agent€♣=”text” Sets User-Ag£★<ent in request
Copyright (C) 2010 by Jeffrey ↕∞Fulmer, et al.
This is free software; see th"♥ e source for copying conditions.
There is NO warranty; not even f∞πor MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.
上(shàng)面也(yě)是(shì)運行(xíng)的(de) ∑×一(yī)些(xiē)參數(shù)，右邊是(shì)對(duì)一±"γ≥(yī)些(xiē)參數(shù)的(de)解釋說(shuō λ)明(míng)
比如(rú)：
–C ：查看(kàn)siege當前的(de)配置λ♠Ω₹信息
–V：版權說(shuō)明(★>± míng)信息
–c：并行(xíng)啓動（訪問(π↔×wèn)）用(yòng)戶數(shù)，默認是(shì)10
-t：壓力測試時(shí)間(jiān)，比如(rú±♦)-t5表示持續時(shí)間(jiān)是δ✔(shì)5分(fēn)鐘(zhōng)
-r：每個(gè)連接發出的(de)請(qǐng)求數(shù)量>≠，這(zhè)個(gè)與t有(yǒu)♥ ↓φ些(xiē)類似，所以設置了(le)這(z∞∏hè)個(gè)值就(jiù)不(bù)需要(yào)設置t了(le)♦φ♣，反之亦然。
-f：對(duì)應一(yī)個(gè)文(wén)件(jiàn)，這(zh∞€₹è)個(gè)文(wén)件(jiàn)裡(lǐ)每一(yī)行(₩ππxíng)為(wèi)一(yī)個(gè)URL鏈接，格式如(rú ≤¶)：
http://www.zihou.me
http://www.zihou.me/2010/12/16/2821/
http://www.zihou.me/201 ₽§σ0/12/14/2806/
好(hǎo)了(le)，主要(yào)的(de)一(yī)些(x÷↑€§iē)參數(shù)說(shuō)明(míng)就(≈∏ ÷jiù)介紹這(zhè)麽多(duō)，其餘的(de)可(kě)以參€±考上(shàng)面的(de)英文(wén)。
使用(yòng)：
1、 啓動100個(gè)用(yòng)戶（線程）在5分(f÷✔ēn)鐘(zhōng)內(nèi)對(d★↓>uì)某一(yī)頁面www.zihou.me進行(xíng)并 ≈發訪問(wèn)
siege http://www.zihou.me -c200 -tδ★'δ5
2、 對(duì)多(duō)個(gè)頁面進行(xíσδ♠ng)并發訪問(wèn)
新建一(yī)個(gè)文(wén)件(jiàn)urlφ✔s，裡(lǐ)面的(de)內(nèi)容為(wèi)（<↔隻是(shì)例子(zǐ)，任何url都(dōu)可(kě)以）：
http://www.zihou.me
http://www.zihou.me/2010/12/16/2821β↕/
http://www.zihou.me/2010/12/14/28$©✔06/
siege -f urls -c200 -t5
表示啓動200個(gè)用(yòng)戶在5分(fē¥φ☆n)鐘(zhōng)內(nèi)并發訪問(wè↑™©÷n)以上(shàng)的(de)url網址。
并發測試完畢後，會(huì)打印出一(yī)些(xiēεε)結果信息：
Lifting the server siege…&n♦§bsp; &nbsλ∏p; done.
Transactions: &nbsΩ'↕p; &nbs×<εp; &☆nbsp; &nb∑ $✘sp; 7555 hits
Availability: ←φ↔β &n€πbsp; <×↕ πφβ 99.47 %
Elapsed time: &nb₹☆§δsp; ×λ÷ &nb$β sp; 299.§•α♥92 secs
Data transferred: &σ☆±•nbsp; •∞™; ☆≥99.17 MB
Response time: &✔&↕✘nbsp; ♥& <∑¶>; 7.30₹♠ secs
Transaction rate:&nb¥♥sp; &nb•πsp; ≈Ω; &nbsσ♣p; 25.19 trans/sec
Throughput: ♣±<↔; &nbs₩'"p; &nb<≤sp; 0↓α£.33 MB/sec
Concurrency: &nb♦σsp; &nbs₩πp; &nbs•γ∞ p; 18 ↕≤3.84
Successful transactions: &nδ bsp; 7555
Failed transactions:&nbs↓∏ p; σβ; &nbs ₹p; 40
Longest transaction: ¶←λβ; &nbs¶¥p; 17.94
Shortest transaction:&n♥Ω₽bsp; &"£nbsp; 0.02
如(rú)果在并發的(de)過程中，被訪問(wè∏→n)的(de)頁面打開(kāi)出錯(cuò)或及其緩慢(≥α¶"màn)，表示在當前并發條件(jiàn)下(xià)β$，被訪問(wèn)網站(zhàn)是(shì)不(→&≈bù)能(néng)承受的(de)，也(₽✔€yě)就(jiù)是(shì)抗并發能(néng)力弱φΩ₹↕。
另外(wài)，在并發的(de)過程中最好(hǎo)÷₹φ∑通(tōng)過top命令來(lái)查看(kàn)CPU和(hé)Memor♦ y的(de)占用(yòng)情況。
