使用wrk进行性能测试
1 wrk介紹
wrk是一款現代化的HTTP性能測試工具,即使運行在單核CPU上也能產生顯著的壓力。它融合了一種多線程設計,并使用了一些可擴展事件通知機制,例如epoll and kqueue。一個可選的LuaJIT腳本能產生HTTP請求,響應處理和自定義報告,更詳細的腳本內容可以參考scripts目錄下的一些例子。
2 wrk下載和安裝
先安裝git
cd /usr/local/src sudo yum install git -y下載wrk文件
git clone https://github.com/wg/wrk.git cd wrk make編譯成功后,目錄下就會有一個wrk文件。如果編譯過程中,出現如下錯誤:
若報錯gcc: Command not found,則需安裝gcc,參考wrk編譯報錯gcc: Command not found
若報錯fatal error: openssl/ssl.h: No such file or directory,則需要安裝openssl的庫。
sudo apt-get install libssl-dev或者
sudo yum install openssl-devel3 一個簡單的例子
wrk -t12 -c400 -d30s http://127.0.0.1:8080/index.html它將會產生如下測試,12個線程(threads),保持400個HTTP連接(connections)開啟,測試時間30秒(seconds)。
詳細的命令行參數如下:
-c, --connections(連接數): total number of HTTP connections to keep open with each thread handling N = connections/threads-d, --duration(測試持續時間): duration of the test, e.g. 2s, 2m, 2h-t, --threads(線程): total number of threads to use-s, --script(腳本): LuaJIT script, see SCRIPTING-H, --header(頭信息): HTTP header to add to request, e.g. "User-Agent: wrk"--latency(響應信息): print detailed latency statistics--timeout(超時時間): record a timeout if a response is not received within this amount of time.下面是輸出結果:
Running 30s test @ http://127.0.0.1:8080/index.html12 threads and 400 connectionsThread Stats Avg Stdev Max +/- StdevLatency 635.91us 0.89ms 12.92ms 93.69%Req/Sec 56.20k 8.07k 62.00k 86.54%22464657 requests in 30.00s, 17.76GB read Requests/sec: 748868.53 Transfer/sec: 606.33MB結果解讀如下:
Latency: 響應信息, 包括平均值, 標準偏差, 最大值, 正負一個標準差占比。
Req/Sec: 每個線程每秒鐘的完成的請求數,同樣有平均值,標準偏差,最大值,正負一個標準差占比。
30秒鐘總共完成請求數為22464657,讀取數據量為17.76GB。
線程總共平均每秒鐘處理748868.53個請求(QPS),每秒鐘讀取606.33MB數據量。
4 發送post請求例子
首先需要創建一個post.lua文件,內容如下:
wrk.method = "POST" wrk.headers["uid"] = "127.0.0.1" wrk.headers["Content-Type"] = "application/json" wrk.body ='{"uid":"127.0.0.1","Version":"1.0","devicetype":"web","port":"8080"}'測試執行命令如下:
./wrk --latency -t100 -c1500 -d120s --timeout=15s -s post.lua http://127.0.0.1:8080/index.html這個腳本加入了--lantency:輸出結果里可以看到響應時間分布情況,
Running 2m test @ http://127.0.0.1:8080/index.html100 threads and 1500 connectionsThread Stats Avg Stdev Max +/- StdevLatency 127.26ms 157.88ms 2.44s 87.94%Req/Sec 177.91 45.09 1.10k 69.97%Latency Distribution50% 66.05ms75% 143.57ms90% 325.41ms99% 760.20ms2138290 requests in 2.00m, 3.17GB read Requests/sec: 17804.57 Transfer/sec: 27.05MB5 帶隨機參數的get請求例子
如果想構造不同的get請求,請求帶隨機參數,則lua腳本如下:
request = function() num = math.random(1000,9999)path = "/test.html?t=" .. numreturn wrk.format("GET", path) end6 添加參數txt文件的get請求例子
如果要測試的url需要參數化,uids.txt文件內容如下:
100 101 102lua腳本如下:
urimap = {} counter = 0 function init(args)for line in io.lines("uids.txt") doprint(line)urimap[counter] = linecounter = counter + 1endcounter = 0 endrequest = function()local path ="/GetInfo.aspx?u=%s&m=1"parms = urimap[counter%(table.getn(urimap) + 1)]path = string.format(path,parms)counter = counter + 1return wrk.format(nil, path) end7 添加參數txt文件的post請求例子
lua腳本如下:
urimap = {} counter = 0 function init(args)for line in io.lines("uids.txt") dourimap[counter] = linecounter = counter + 1endcounter = 0 endrequest = function()local body1 = '{"uid":"100%s'local body2 = '","name":"1"}'parms = urimap[counter%(table.getn(urimap) + 1)]path = "/getinfo"method = "POST"wrk.headers["Content-Type"] = "application/json"body = string.format(body1,parms)..body2counter = counter + 1return wrk.format(method, path, wrk.headers, body) end如果要打印返回數據,可添加如下腳本:
a=1 function response(status, headers, body)if(a==1)thena=2print(body)end end8 提交不同表單內容例子
lua腳本如下:
wrk.method = "POST" wrk.body = "" wrk.headers["Content-Type"] = "application/x-www-form-urlencoded"-- 提交不同表單內容 local queries = {"version=1.0","version=2.0","version=3.0" } local i = 0 request = function()local body = wrk.format(nil, nil, nil, queries[i % #queries + 1])i = i + 1return body end9 訪問多個url例子
如果要隨機測試多個url,可參考wrk-scripts這個項目。
需要創建一個文件名為paths.txt,里面每行是一個要測試的url網址。lua腳本如下:
counter = 0-- Initialize the pseudo random number generator - http://lua-users.org/wiki/MathLibraryTutorial math.randomseed(os.time()) math.random(); math.random(); math.random()function file_exists(file)local f = io.open(file, "rb")if f then f:close() endreturn f ~= nil endfunction shuffle(paths)local j, klocal n = #pathsfor i = 1, n doj, k = math.random(n), math.random(n)paths[j], paths[k] = paths[k], paths[j]endreturn paths endfunction non_empty_lines_from(file)if not file_exists(file) then return {} endlines = {}for line in io.lines(file) doif not (line == '') thenlines[#lines + 1] = lineendendreturn shuffle(lines) endpaths = non_empty_lines_from("paths.txt")if #paths <= 0 thenprint("multiplepaths: No paths found. You have to create a file paths.txt with one path per line")os.exit() endprint("multiplepaths: Found " .. #paths .. " paths")request = function()path = paths[counter]counter = counter + 1if counter > #paths thencounter = 0endreturn wrk.format(nil, path) end?
轉載于:https://www.cnblogs.com/ycyzharry/p/8372168.html
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