O que significa o segundo campo da saída de sadf?

Question

Quando você usa sadf para criar um relatório a partir do arquivo de dados de sysstat , as seguintes linhas serão mostradas:

ncm     3       2015-05-11 03:57:15 UTC all     %%user  0.08
ncm     3       2015-05-11 03:57:15 UTC all     %%nice  0.00
ncm     3       2015-05-11 03:57:15 UTC all     %%system        0.08
ncm     3       2015-05-11 03:57:15 UTC all     %%iowait        0.00
ncm     3       2015-05-11 03:57:15 UTC all     %%steal 0.00
ncm     3       2015-05-11 03:57:15 UTC all     %%idle  99.84

O que o segundo campo desta saída significa?

    

Answer 1

A segunda coluna ( 3 ) mostra o intervalo de medição em segundos.

% sar -u -o datafile 3 2
Linux 3.19.0-16-generic (mysecret)  11.05.2015  _x86_64_    (2 CPU)

12:01:20        CPU     %user     %nice   %system   %iowait    %steal     %idle
12:01:23        all      0,68      0,00      0,34      1,01      0,00     97,97
12:01:26        all      4,57      0,00      2,20      0,00      0,00     93,23
Average:        all      2,62      0,00      1,27      0,51      0,00     95,60

e esta é a sadf output:

% sadf datafile         
mysecret    3   2015-05-11 10:01:23 UTC all %%user  0,68
mysecret    3   2015-05-11 10:01:23 UTC all %%nice  0,00
mysecret    3   2015-05-11 10:01:23 UTC all %%system    0,34
mysecret    3   2015-05-11 10:01:23 UTC all %%iowait    1,01
mysecret    3   2015-05-11 10:01:23 UTC all %%steal 0,00
mysecret    3   2015-05-11 10:01:23 UTC all %%idle  97,97
mysecret    3   2015-05-11 10:01:26 UTC all %%user  4,57
mysecret    3   2015-05-11 10:01:26 UTC all %%nice  0,00
mysecret    3   2015-05-11 10:01:26 UTC all %%system    2,20
mysecret    3   2015-05-11 10:01:26 UTC all %%iowait    0,00
mysecret    3   2015-05-11 10:01:26 UTC all %%steal 0,00
mysecret    3   2015-05-11 10:01:26 UTC all %%idle  93,23

de man sar :

sar -o datafile interval count

    All data are captured in binary form and saved to a file (datafile).
    The data can then be selectively displayed with the sar command using the -f option. Set the interval and count parameters to select count records at interval  second  intervals.
    If  the  count  parameter is not set, all the records saved in the file will be selected.
    Collection of data in this manner is useful to characterize system usage over a period of time and determine peak usage hours.