different centos version + different nginx version make different performance

Mon Nov 2 07:48:46 UTC 2015



hi all,    Sorry to bother you again, I find pictures cannt show clearly, so copy statistics below.  thanks again.
     I find a performace decreasing when I update centos5.4 to centos7.1 and the same time nginx-1.2.7 to nginx-1.8.0.     Exacted statistics as below:Tasks: 177 total,   3 running, 173 sleeping,   0 stopped,   1 zombieCpu0  :  3.7%us,  3.3%sy,  0.0%ni, 92.4%id,  0.0%wa,  0.0%hi,  0.7%si,  0.0%stCpu1  :  4.7%us,  3.7%sy,  0.0%ni, 91.0%id,  0.0%wa,  0.0%hi,  0.7%si,  0.0%stCpu2  :  3.6%us,  3.0%sy,  0.0%ni, 92.7%id,  0.0%wa,  0.0%hi,  0.7%si,  0.0%stCpu3  :  4.0%us,  3.0%sy,  0.0%ni, 92.7%id,  0.0%wa,  0.0%hi,  0.3%si,  0.0%stCpu4  :  3.7%us,  3.0%sy,  0.0%ni, 93.0%id,  0.0%wa,  0.0%hi,  0.3%si,  0.0%stCpu5  :  3.3%us,  2.6%sy,  0.0%ni, 93.4%id,  0.0%wa,  0.0%hi,  0.7%si,  0.0%stCpu6  :  3.3%us,  3.3%sy,  0.0%ni, 93.0%id,  0.0%wa,  0.0%hi,  0.3%si,  0.0%stCpu7  :  4.0%us,  2.7%sy,  0.0%ni, 92.7%id,  0.0%wa,  0.0%hi,  0.7%si,  0.0%stCpu8  :  4.0%us,  2.7%sy,  0.0%ni, 93.0%id,  0.0%wa,  0.0%hi,  0.3%si,  0.0%stCpu9  :  4.0%us,  3.7%sy,  0.0%ni, 91.3%id,  0.7%wa,  0.0%hi,  0.3%si,  0.0%stCpu10 :  2.7%us,  2.0%sy,  0.0%ni, 82.4%id,  0.0%wa,  0.7%hi, 12.3%si,  0.0%stCpu11 :  2.3%us,  2.3%sy,  0.0%ni, 64.7%id,  0.0%wa,  1.0%hi, 29.7%si,  0.0%stMem:  12273740k total,  9946612k used,  2327128k free,  5475768k buffersSwap:  8385920k total,        0k used,  8385920k free,  2030764k cached
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND26770 nobody    15   0 91076  32m 1196 S  9.0  0.3 997:15.34 proxy-nginx26769 nobody    15   0 91936  33m 1196 S  7.7  0.3   1043:52 proxy-nginx26778 nobody    15   0 91560  33m 1196 R  7.7  0.3 921:28.59 proxy-nginx26772 nobody    15   0 92164  33m 1196 S  7.3  0.3 920:47.31 proxy-nginx26773 nobody    15   0 91808  33m 1200 S  7.3  0.3 930:41.83 proxy-nginx26776 nobody    15   0 92332  33m 1196 S  7.3  0.3 934:57.61 proxy-nginx26777 nobody    15   0 92504  33m 1196 S  7.3  0.3 926:08.37 proxy-nginx26771 nobody    16   0 92176  33m 1196 S  7.0  0.3 955:29.21 proxy-nginx26775 nobody    15   0 91688  33m 1200 R  7.0  0.3 939:46.60 proxy-nginx26774 nobody    15   0 92044  33m 1196 S  6.3  0.3 842:52.49 proxy-nginx26780 nobody    15   0 90772  32m 1200 S  6.0  0.3 696:50.17 proxy-nginx26779 nobody    15   0 90380  31m 1196 S  5.7  0.3 832:16.64 proxy-nginx                          centos5.4 + nginx-1.2.7
Tasks: 276 total,   6 running, 268 sleeping,   2 stopped,   0 zombie%Cpu0  :  8.2 us,  8.9 sy,  0.0 ni, 73.4 id,  0.3 wa,  0.0 hi,  9.2 si,  0.0 st%Cpu1  :  7.9 us,  7.6 sy,  0.0 ni, 75.2 id,  0.0 wa,  0.0 hi,  9.3 si,  0.0 st%Cpu2  :  6.7 us,  8.1 sy,  0.0 ni, 77.4 id,  0.0 wa,  0.0 hi,  7.8 si,  0.0 st%Cpu3  :  7.4 us,  8.0 sy,  0.0 ni, 79.6 id,  0.0 wa,  0.0 hi,  5.0 si,  0.0 st%Cpu4  :  6.4 us,  7.1 sy,  0.0 ni, 78.8 id,  0.0 wa,  0.0 hi,  7.8 si,  0.0 st%Cpu5  :  7.0 us,  7.3 sy,  0.0 ni, 78.4 id,  0.0 wa,  0.0 hi,  7.3 si,  0.0 st%Cpu6  : 27.3 us,  8.7 sy,  0.0 ni, 59.3 id,  0.0 wa,  0.0 hi,  4.7 si,  0.0 st%Cpu7  :  8.3 us,  8.0 sy,  0.0 ni, 75.1 id,  0.0 wa,  0.0 hi,  8.7 si,  0.0 st%Cpu8  :  6.9 us,  8.6 sy,  0.0 ni, 78.7 id,  0.0 wa,  0.0 hi,  5.8 si,  0.0 st%Cpu9  : 15.4 us,  8.6 sy,  0.0 ni, 69.2 id,  0.0 wa,  0.0 hi,  6.8 si,  0.0 st%Cpu10 : 23.9 us,  8.8 sy,  0.0 ni, 64.0 id,  0.0 wa,  0.0 hi,  3.4 si,  0.0 st%Cpu11 : 40.5 us,  9.1 sy,  0.0 ni, 41.2 id,  0.0 wa,  0.0 hi,  9.1 si,  0.0 stKiB Mem : 12126740 total,   159380 free,   607028 used, 11360332 buff/cacheKiB Swap:  8388604 total,  8388604 free,        0 used. 10895304 avail Mem
  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND 6876 root      20   0    4604    864    496 R  85.4  0.0   0:52.28 gzip12806 nobody    20   0   61508  35056   1272 R  18.3  0.3 282:22.99 nginx12810 nobody    20   0   61044  34596   1272 S  17.6  0.3 292:06.85 nginx12799 nobody    20   0   60768  34240   1272 R  16.9  0.3 275:36.83 nginx12801 nobody    20   0   60764  34204   1272 S  15.6  0.3 277:38.95 nginx12802 nobody    20   0   61468  34964   1272 S  15.3  0.3 226:20.06 nginx12800 nobody    20   0   60716  34268   1272 R  14.6  0.3 276:13.54 nginx12805 nobody    20   0   61424  34976   1272 S  14.6  0.3 241:46.36 nginx12807 nobody    20   0   61128  34680   1272 S  14.6  0.3 245:35.70 nginx12808 nobody    20   0   60640  34096   1272 R  14.6  0.3 255:17.38 nginx12809 nobody    20   0   60716  34268   1272 S  14.6  0.3 244:02.67 nginx12803 nobody    20   0   61396  34908   1272 S  14.3  0.3 284:18.39 nginx12804 nobody    20   0   60568  34120   1272 S  14.0  0.3 282:03.64 nginx                                 centos7.1 + nginx-1.8.0         From the statistics, we can see that  updated environment cpu-load average is almostly doubled previous environment.         Of course the sysctl.conf and nginx-conf are not changed after updating environment. It confused me and I dont know why.        Anybody meet the problem? Please give me a help, thanks.


-----Regards,Xiaokai
 		 	   		  
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