响应时间解释

1、尊敬的商业总会、监理和评测单位:我方在商务平台项目“软件需求功能说明书”第88页“性能需求”中指出“查询返回速度在3秒内” 是指应用程序收到请求后的响应时间，而不是特指加上网络传输时间后的用户体验时间。而实际上用户体 验时间由应用程序响应时间、网络传输时间以及浏览器渲染时间等组成，后两者可以称为等待时间。鉴于 此，用户体验时间在很大程度上受到等待时间，特别是其中网络因素的影响。尤其当应用程序部署在互联 网环境中时，由于用户接入互联网机制的不同、接入ISP的不同以及服务器的ISP的不同等诸多的随机因 素，都有可能直接影响着网络传输的速度。概括说，由于用户本身所处的网络环境以及服务器本身所处的 网

2、络环境，直接影响着网络传输的速度。而它们最终影响了用户体验时间。下面做一个测试:C：Documents and Settingsqxpping 163 .comPinging 163.cam 01 with 32 bytes of data：Reply fromReply fromReply fromReply from01：01：01：01：bytes=32bytes=32bytes=32bytes=32time=44iis TTL=245time=95iis TTL=245time=167ms TTL=245time=213ms TTL=245Ping statistics for 01:

3、Packets: Sent = 4, Received = 4, Lost = 0 , Approximate round trip times in milli-seconds:Minimum = 44ms, Maximum = 213113, Auerage = 129ms可以看到，ping 163服务器时平均的响应时间是129ms，最大响应时间为213ms。下面是对的测试：C： Documents and Settingsqxpping chinaggcc _Pinging 211 uith 32 bytes of data：Replyfrom21：bytes=3

4、2time=456msTTL=57Replyfrom21：bytes=32time=269msTTL=57Replyfrom21：bytes=32time=368msTTL=57Replyfrom21：bytes=32time=163msTTL=57Ping statistics for 21:Packets: Sent = 4, Receiued = 4, Lost = 0 , Approximate round trip times in milli-seconds:Minimum = 163ms, Maximum =

5、 456ms, Auerage = 314ms平均响应时间是314ms，是163服务器的2.43倍，这是单纯的网络速度测试，由此可见网络因素对响应时 间的影响非常大。下面是对亚残官方网站服务器的测试：C：Documents and Settingsqxpping Pinging 3 viith 32 bytes of data：Repli/Repli/Repli/Repli/FromFromFromFrom3：3：3：3：bytes=32bytes=32bytes=32bytes=32time=141ms TTL=54 time=18nis TTL=54 time=153ms time=324

6、msTTL=54TTL=54Ping statistics For 3:,Packets: Sent = 4, Receiued = 4, Lost = 0 Approximate round trip times in milli-seconds:Minimum = 18ms, Maximum = 324ms, fiuerage = 159ms可以看到，它的平均响应时间只有159ms。 下面是又一次随机的商会服务器测试：C： Documents and Settingsqxpping -tPinging 8 with 32 bytes of dataReplijfrom8bytes32t i

7、me=1052iisTTL=56Replijfrom8bytes32t ime=1133iisTTL=56Replijfrom8bytes32t ime=1274iisTTL=56Replijfrom8bytes32t ime=1013iisTTL=56Replijfrom8bytes32t ime=1100iisTTL=56Replijfrom8bytes32t ime=685insTTL=56Replijfrom8bytes32t ime=886insTTL=56Replijfrom8bytes32t ime=1253iisTTL=56Replijfrom8bytes32t ime=105

8、7iisTTL=56Replijfrom8bytes32t ime=728insTTL=56Replijfrom8bytes32t ime=935insTTL=56Replijfrom8bytes32t ime=584insTTL=56Request timed out.Replijfrom8bytes32t ime=836insTTL=56Replijfrom8bytes32time=1073msTTL=56Replijfrom8bytes32t ime=1093iisTTL=56ReplFfrom8bytes32t ime=603insTTL=56ReplFfrom8bytes32t im

9、e=1158iisTTL=56ReplFfrom8bytes32t ime=615insTTL=56Request timed out.ReplFfrom8bytes32t ime=211insTTL=56ReplFfrom8bytes32t ime=122insTTL=56Repli/from8bytes32t ime=190insTTL=56Repli/from8bytes32time=32iis TTL=56Repli/from8bytes32t ime=287insTTL=56Ping statistics For 8：Packets: Sent = 25, Receiued = 23

10、, Lost = 2 , Approximate round trip times in milli-seconds:Minimum = 32ms, Maximum = 1274ms, fluerage = 779ms Control-C可以看到服务器极不稳定，不但平均响应时间达到779ms，而且有两次请求超时。卜面是对的又一次随机测试:Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21

11、Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21Replv from 21eplv from 21eplv from 21eplv from 21eplv from 21eplv from 21eplv from 21nepli/ from 21nepli/ from 21nepli/ from 21nepli/ from 21nepli/ from 21nepli/ from 21epli/ from 21e

12、pli/ from 21epli/ from 21epli/ from 21epli/ from 21epli/ from 21epli/ from 21epli/ from 21epli/ from 21heply from 21 bytes=32 time=253nis TTL=57 bytes=32 time=30ms TTL=57 bytes=32 time=321nis TTL=57 bytes=32 time=70ms TTL=57 bytes=32 time=llms TTL=57 bytes=32 time=249ms TTL=57 bytes=32 time=208ms TT

13、L=57 bytes=32 time=654nis TTL=57 bytes=32 time=1057ms TTL=57 bytes=32 time=544ms TTL=57 bytes=32 time=522nis TTL=57 bytes=32 time=581nis TTL=57 bytes=32 time=632nis TTL=57 bytes=32 time=664nis TTL=57 bytes=32 time=567nis TTL=57 bytes=32 time=1163ms TTL=57 bytes=32 time=1109ms TTL=57 bytes=32 time=52

14、1nis TTL=57 bytes=32 time=44ms TTL=57 bytes=32 time=8ms TTL=57 bytes=32 time=75ms TTL=57 bytes=32 time=491nis TTL=57 bytes=32 time=622nis TTL=57 bytes=32 time=644ms TTL=57 bytes=32 time=959nis TTL=57 bytes=32 time=837nis TTL=57 bytes=32 time=497nis TTL=57 bytes=32 time=250nis TTL=57 bytes=32 time=61

15、6nis TTL=57 bytes=32 time=419nis TTL=57 bytes=32 time=894nis TTL=57 bytes=32 time=540ms TTL=57 bytes=32 time=467nis TTL=57 bytes=32 time=173ms TTL=57 bytes=32 time=43ms TTL=57 bytes=32 time=581nis TTL=57 bytes=32 time=640ms TTL=57 bytes=32 time=613nis TTL=57 bytes=32 time=708ms TTL=57 bytes=32 time=687nis TTL=57 bytes=32 time=893nis TTL=57 bytes=32 time=360nis TTL=57Ping s