【终端案例】潮州LTE-POST成功率低终端问题分析

潮州LTE-POST成功率低终端问题分析1问题现象统计潮州4月14日至4月17日终端维度的POST成功率，按如下规则筛选出符合条件的终端：用户数大于5；成功率低于90%；指标持续低超过3天。如下表所示：品牌终端4月14日4月15日4月16日4月17日用户数酷派 Ltd,Coolpad 870558.74%47.82%47.96%68.51%323联想A808t79.81%80.65%80.83%79.20%269酷派Coolpad 8720L41.58%48.65%56.70%45.63%1781由上表可知，以上3款终端POST成功率在统计周期持续比较差，可知存在问题，以下将对它们进行逐一分析，排查是否是终端自身原因导致指标差。2问题分析2.1酷派Ltd,Coolpad 8705统计Ltd,Coolpad 8705 4月15日（指标最差）用户维度的指标情况如下：IMSI 请求次数成功次数成功率失败占比460028768184272 142883032.12%11.29%460009380352730 125092391.91%9.90%460079147841355 117054573.90%9.08%460028149053663 11665224119.21%7.60%460028149123726 113481921.69%9.00%460020337423366 106786225.83%8.11%460029765920313 7887107613.64%5.50%460028149059026 754776510.14%5.47%460028768178428 5906126921.49%3.74%460000412522984 45923788.23%3.40%460020210540541 4483294265.63%1.24%460004260466582 426851111.97%3.03%460009370394249 372751413.79%2.59%460002041365480 337672421.45%2.14%460029195682987 318280925.42%1.91%业务量TOP15的uri_main维度的指标情况如下：uri_main请求次数成功次数成功率时延失败占比11661642013.60%307.33190.72%119431060988.85%1666.0941.08%9182873695.14%295.16380.36%6461641999.41%207.57290.03%6026600799.68%237.07490.02%2933291899.49%211.26350.01%2899287399.14%309.84320.02%542811182865.03%468.87670.79%2533230390.92%308.85170.19%2510230991.99%306.33640.16%2376235899.28%1329.3860.01%2313223696.67%7438.9820.06%2058191893.20%538.11890.11%1803149783.03%494.07280.25%1743131475.39%266.62020.35%业务量TOP15的dest_ip维度的指标情况如下：dest_ip请求次数成功次数成功率失败占比72176816563460.318797.22%82252525170.99680.01%183.232.4796540.06%08211921110.99620.01%70205320470.99710.00%0178517760.9950.01%3119811900.99330.01%731043104310.00%19068120.89620.08%68907960.89440.08%58898080.90890.07%298797090.80660.14%908698680.99880.00%78277150.86460.09%38217600.92690.05%由上3表可知，Coolpad 8705失败在用户维度上无集中性，uri_main集中在“”，dest_ip集中在ip：72。进一步统计“”（72）全网的成功率，发现指标也是极其低，且在终端上也无集中性，怀疑网关（72）对域名“”进行了策略设置，导致其POST成功率偏差。可见，Ltd,Coolpad 8705POST成功率偏低为用户访问“”失败导致，初步怀疑网关（72）可能对该网址进行了策略设置，整体成功率都偏差。2.2联想 A808t统计A808t 4月14日（指标最差）用户维度的指标情况如下：IMSI 请求次数成功次数成功率失败占比460020287772514 3651206256.59%8.43%460028149147145 2564241194.03%0.81%460021137482730 2542236793.12%0.93%460028768165838 2345183578.29%2.70%460028768165861 1977179390.74%0.98%460002041382522 186886446.31%5.32%460020337539182 1696163896.58%0.31%460028165235016 165558335.29%5.68%460001431794371 1643157695.92%0.36%460020337099548 163753932.93%5.82%460002041364092 1521142093.36%0.54%460002041328809 131364649.20%3.54%460002041381165 1230117095.12%0.32%460028149150860 1162102788.38%0.72%460001540370339 1151108494.18%0.36%业务量TOP15的uri_main维度的指标情况如下：uri_main请求次数成功次数成功率失败占比6688301645.28%19.47%96374302947.65%17.74%4777418787.65%3.13%4117260.70%21.69%3914369094.28%1.19%3372336399.73%0.05%2732270799.16%0.13%2214211395.48%0.54%2212217398.24%0.21%1943193299.43%0.06%1852184599.62%0.04%179345125.21%7.12%163854033.03%5.82%119760.50%6.32%1180116999.07%0.06%业务量TOP15的dest_ip维度的指标情况如下：dest_ip请求次数成功次数成功率失败占比72402492649765.90%72.92%22008196998.06%0.21%92001199199.50%0.05%821546154199.68%0.03%01347100.74%7.09%0118950.42%6.28%701134112999.56%0.03%90990399.45%0.03%90289999.67%0.02%886100.00%4.57%0879178799.49%0.02%066265899.40%0.02%358358199.66%0.01%457756998.61%0.04%156149688.41%0.34%由上3表可知，A808t失败在用户维度上无集中性，uri_main集中在“”和“”，dest_ip集中在ip：72。进一步对“”和“”进行终端维度发现并无集中度，dest_ip维度分析结果如下：uri_maindest_ip请求次数成功次数成功率7216228341221.25%9118641176399.17%9109261085799.38%1103991032399.31%8103661027599.15%673912.56%3392358.97%812121100.00%94100.00%uri_maindest_ip请求次数成功次数成功率01995910055.06%01897010235.40%723472882.68%641516.67%1500.00%6711100.00%由上表可知，当“”和“”对应网关：72时，POST指标也是极其低，怀疑网关（72）对域名“”和“”进行了有关设置，导致其POST成功率偏差。可见，A808tPOST成功率偏低为用户访问“”和“”失败导致，初步怀疑网关（72）可能对该网址进行了策略设置，整体成功率都偏差。2.3酷派Coolpad 8720L统计Coolpad 8720L 4月15日（指标最差）用户维度的指标情况如下：IMSI 请求次数成功次数成功率失败占比460002505103941 232994601.97%3.64%460000761736773 229138063.52%3.52%460028149037569 182671300.71%2.89%460009380359547 169536934.09%2.59%460020210540799 162155103.15%2.50%460007372169124 1618315909.83%2.33%460009380398374 161128615.35%2.43%460028149052774 140051110.79%2.21%460002041319357 13506700.53%2.14%460001530354141 134216855.10%2.03%460002801550172 127019437.42%1.87%460020210574619 126942291.80%1.99%460000105140991 12269960.78%1.94%460000105171073 120372391.99%1.88%460001001382596 118921691.42%1.87%业务量TOP15的uri_main维度的指标情况如下：uri_main请求次数成功次数成功率失败占比608501271214.46%92.67%295792628488.87%0.53%247412349594.99%0.20%244332430799.49%0.02%198211611581.30%0.59%188071869599.43%0.02%173761721799.16%0.03%45106614514.62%1.63%9385842989.82%0.15%7355672991.50%0.10%7241720099.43%0.01%6913688599.59%0.00%6409631998.60%0.01%6369620197.36%0.03%6323551487.21%0.13%业务量TOP15的dest_ip维度的指标情况如下：dest_ip请求次数成功次数成功率失败占比727984851910620.239496.82%01105390010.81430.33%3311018109590.9950.01%82966896200.99530.01%08886288190.99530.01%70698469510.99540.01%4545851730.04190.70%41447440260.90010.07%3351433700.9590.02%28346831150.89820.06%3316531360.99080.00%183.23