作者:烧鸡太子爷
起源:恒生LIGHT云社区
简介往年公司开发者大会是线上的模式,依照常规,为了服务的保障,须要对整个零碎的性能做一个评估,长期抱佛脚,比拟罕用的工具有jmeter和Apache Bench,最终在两者之间抉择了Apache Bench(简称ab),也就针对ab工具做了一些总结。
AB简介关上官网能够看到上面一段话:
ab is a tool for benchmarking your Apache Hypertext Transfer Protocol (HTTP) server. It is designed to give you an impression of how your current Apache installation performs. This especially shows you how many requests per second your Apache installation is capable of serving.ApacheBench 是 Apache 服务器自带的一个web压力测试工具,简称ab。ab又是一个行工具,对发动负载的本机要求很低,依据ab 能够创立很多的并发拜访线程,模仿多个访问者同时对某一URL地址进行拜访,因而能够用来测试指标服务器的负载压力。总的来说ab工具玲珑简略,上手学习较快,能够提供须要的根本性能指标,然而没有图形化后果,不能监控。
jmeter和ab的比拟这个网上有很多的介绍,收集找了一位大神的总结(具体的不多说,大家能够自行百度)
1、jmeter是一次残缺的申请和返回, 而AB只是收回去申请,并不对返回做解决,只是申请发送胜利或者失败。 所以从准确性来说,Jmeter更精确,而AB速度更快,能够用起码的机器资源产生更多的拜访申请;
2、Jmeter自身反对断言、可变参数和CSV数据集的输出,能设定更加灵便多变的的测试场景,而AB则不反对(临时没想到);
3、Jmeter能够提供更加具体的统计后果数据,比方接口错误信息、单线程的申请工夫等,而AB则不反对;
4、Jmeter不反对准确工夫的压测,比方压测10分钟,然而AB反对;
5、Jmeter反对分布式的压测集群,且反对函数,AB不反对;
6、软件本身消耗资源:Jmeter因为比拟重,且统计了很多后果数据,比AB耗时消耗资源多,AB属于超轻量级,在开发测试过程中非常适宜做单接口压测。
因为本次只针对单个接口做测试,手上刚好有闲暇的linux机器,综合思考就抉择了AB,废话不多说,上面就进行AB的应用做一些解说。
AB的应用官网针对ab的应用做了很具体的介绍,咱们能够去查看官网地址:
https://httpd.apache.org/docs...
上面做了一些节抄,英文比较简单,就不做翻译了。
ab参数ab [ -A auth-username:password ] [ -b windowsize ] [ -B local-address ] [ -c concurrency ] [ -C cookie-name=value ] [ -d ] [ -e csv-file ] [ -E client-certificate file ] [ -f protocol ] [ -g gnuplot-file ] [ -h ] [ -H custom-header ] [ -i ] [ -k ][ -l ] [ -m HTTP-method ] [ -n requests ] [ -p POST-file ] [ -P proxy-auth-username:password ] [ -q ] [ -r ] [ -s timeout ] [ -S ] [ -t timelimit ] [ -T content-type ] [ -u PUT-file ] [ -v verbosity] [ -V ] [ -w ] [ -x <table>-attributes ] [ -X proxy[:port] ] [ -y <tr>-attributes ] [ -z <td>-attributes ] [ -Z ciphersuite ] [http[s]://]hostname[:port]/path参数阐明-A auth-username:passwordSupply 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).-b windowsizeSize of TCP send/receive buffer, in bytes.-B local-addressAddress to bind to when making outgoing connections.-c concurrencyNumber of multiple requests to perform at a time. Default is one request at a time.-C cookie-name=valueAdd a Cookie: line to the request. The argument is typically in the form of a name=value pair. This field is repeatable.-dDo not display the "percentage served within XX [ms] table". (legacy support).-e csv-fileWrite 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'.-E client-certificate-fileWhen connecting to an SSL website, use the provided client certificate in PEM format to authenticate with the server. The file is expected to contain the client certificate, followed by intermediate certificates, followed by the private key. Available in 2.4.36 and later.-f protocolSpecify SSL/TLS protocol (SSL2, SSL3, TLS1, TLS1.1, TLS1.2, or ALL). TLS1.1 and TLS1.2 support available in 2.4.4 and later.-g gnuplot-fileWrite 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.-hDisplay usage information.-H custom-headerAppend 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").-iDo HEAD requests instead of GET.-kEnable the HTTP KeepAlive feature, i.e., perform multiple requests within one HTTP session. Default is no KeepAlive.-lDo not report errors if the length of the responses is not constant. This can be useful for dynamic pages. Available in 2.4.7 and later.-m HTTP-methodCustom HTTP method for the requests. Available in 2.4.10 and later.-n requestsNumber 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-fileFile containing data to POST. Remember to also set -T.-P proxy-auth-username:passwordSupply 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).-qWhen 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.-rDon't exit on socket receive errors.-s timeoutMaximum number of seconds to wait before the socket times out. Default is 30 seconds. Available in 2.4.4 and later.-SDo 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 timelimitMaximum 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-typeContent-type header to use for POST/PUT data, eg. application/x-www-form-urlencoded. Default is text/plain.-u PUT-fileFile containing data to PUT. Remember to also set -T.-v verbositySet 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.-VDisplay version number and exit.-wPrint out results in HTML tables. Default table is two columns wide, with a white background.-x -attributesString to use as attributes for table. Attributes are inserted table here.-X proxy[:port]Use a proxy server for the requests.-y -attributesString to use as attributes for tr.-z -attributesString to use as attributes for tb-Z ciphersuiteSpecify SSL/TLS cipher suite (See openssl ciphers)参数阐明Server Software
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