lowercases / tcprstat Goto Github PK

I want to see headers every once in a while. It also seems odd to me to have two separate options for headers. I would suggest to have a single option that specifies how many iterations should pass before headers reprint: 0 means they never reprint, 1 means they print only once, and means every N iterations. It should default to 1.

I'm seeing spikes, like this:

[root@db1 percona]# rtime -p 3306 -t 1 -n 0
timestamp       count   sum     max     min     avg     med     stddev  90_max  90_avg  90_std  99_max  99_avg  99_std
1275532020      1390    1001093 116098  6       720     60      4765    377     83      78      19496   338     1646
1275532021      1857    1093877 62758   1       589     63      3688    378     85      77      13154   263     1143
1275532022      1600    971538  18446744073709551615    1       607     66      3717    377     88      78      16207   322     1414
1275532023      1829    1047450 73746   6       572     65      3735    356     82      74      13291   256     1056
1275532024      1514    883978  79794   5       583     66      3951    322     84      73      13065   229     1050
1275532025      1680    615411  77581   0       366     65      2909    307     78      65      5452    127     289
1275532026      1741    751224  88968   2       431     65      3460    330     81      69      10474   151     492
1275532027      1900    1092936 87621   1       575     67      3714    347     86      75      13787   273     1141

I just noticed that the headers say 90_avg, 90_max, etc. Unless that is a typo we should change it to 95th and 99th percentile... 90th percentile isn't really that meaningful.