cardiff: Fixing checking string

We were spoking about CPU perf while we spoke about memory perf... Bad
typo.
cardiff: Adding SUMMARY log level

Adding a SUMMARY log level that could be used to generates a synthetic
output
cardiff: Adding summary reporting

This loglevel make a synthetic summary that is quickly parseable by a
human.

A typical usage & output looks like:

./cardiff.py -p 'sample/*.hw_' -l SUMMARY
[...]

Group 0 : Checking logical disks perf
standalone_randwrite_4k_IOps    : SUMMARY :   1 consistent hosts with   696.50 IOps as average value and     0.00 standard deviation
standalone_randread_4k_IOps     : SUMMARY :   1 consistent hosts with   403.00 IOps as average value and     0.00 standard deviation
standalone_read_1M_IOps         : SUMMARY :   1 consistent hosts with   188.00 IOps as average value and     0.00 standard deviation
standalone_write_1M_IOps        : SUMMARY :   1 consistent hosts with    10.00 IOps as average value and     0.00 standard deviation
simultaneous_randwrite_4k_IOps  : SUMMARY :   1 consistent hosts with   642.00 IOps as average value and     0.00 standard deviation
simultaneous_randread_4k_IOps   : SUMMARY :   1 consistent hosts with   427.50 IOps as average value and     0.00 standard deviation
simultaneous_read_1M_IOps       : SUMMARY :   1 consistent hosts with   187.50 IOps as average value and     0.00 standard deviation
simultaneous_write_1M_IOps      : SUMMARY :   1 consistent hosts with    81.50 IOps as average value and     0.00 standard deviation

Group 1 : Checking logical disks perf
standalone_randwrite_4k_IOps    : SUMMARY :  14 consistent hosts with   660.00 IOps as average value and    25.74 standard deviation
standalone_randwrite_4k_IOps    : SUMMARY :   1 curious    hosts with  1038.00 IOps as average value and     0.00 standard deviation
standalone_randwrite_4k_IOps    : SUMMARY :  14 unstable   hosts with   660.00 IOps as average value and    25.74 standard deviation
standalone_randread_4k_IOps     : SUMMARY :  15 consistent hosts with   303.80 IOps as average value and     4.85 standard deviation
standalone_read_1M_IOps         : SUMMARY :  15 consistent hosts with   183.03 IOps as average value and     2.90 standard deviation
standalone_write_1M_IOps        : SUMMARY :  14 consistent hosts with     7.57 IOps as average value and     0.37 standard deviation
standalone_write_1M_IOps        : SUMMARY :   1 curious    hosts with     6.50 IOps as average value and     0.00 standard deviation
standalone_write_1M_IOps        : SUMMARY :  15 unstable   hosts with     7.50 IOps as average value and     0.45 standard deviation
simultaneous_randwrite_4k_IOps  : SUMMARY :  30 unstable   hosts with   865.83 IOps as average value and   243.24 standard deviation
simultaneous_randread_4k_IOps   : SUMMARY :  15 consistent hosts with   326.17 IOps as average value and     5.60 standard deviation
simultaneous_read_1M_IOps       : SUMMARY :  15 consistent hosts with   184.50 IOps as average value and     1.43 standard deviation
simultaneous_write_1M_IOps      : SUMMARY :  30 unstable   hosts with    41.63 IOps as average value and     9.09 standard deviation

Group 2 : Checking logical disks perf
standalone_randwrite_4k_IOps    : SUMMARY :   3 consistent hosts with   727.67 IOps as average value and     1.55 standard deviation
standalone_randread_4k_IOps     : SUMMARY :   3 consistent hosts with   402.67 IOps as average value and     3.42 standard deviation
standalone_read_1M_IOps         : SUMMARY :   3 consistent hosts with   188.50 IOps as average value and     2.48 standard deviation
standalone_write_1M_IOps        : SUMMARY :   3 consistent hosts with     9.00 IOps as average value and     0.00 standard deviation
simultaneous_randwrite_4k_IOps  : SUMMARY :   3 consistent hosts with   657.83 IOps as average value and    12.14 standard deviation
simultaneous_randread_4k_IOps   : SUMMARY :   3 consistent hosts with   451.33 IOps as average value and     6.24 standard deviation
simultaneous_read_1M_IOps       : SUMMARY :   3 consistent hosts with   189.17 IOps as average value and     2.32 standard deviation
simultaneous_write_1M_IOps      : SUMMARY :   6 unstable   hosts with    78.83 IOps as average value and     8.72 standard deviation

Group 0 : Checking CPU perf
bogomips                        : SUMMARY :   1 consistent hosts with  3999.92    as average value and     0.00 standard deviation
loops_per_sec                   : SUMMARY :   1 consistent hosts with   453.28    as average value and     0.00 standard deviation
CPU Efficiency                  : SUMMARY :   1 consistent hosts with    75.83 %  as average value and     0.00 standard deviation

Group 1 : Checking CPU perf
bogomips                        : SUMMARY :  15 consistent hosts with  4000.23    as average value and     0.53 standard deviation
loops_per_sec                   : SUMMARY :  13 consistent hosts with   453.42    as average value and     0.35 standard deviation
loops_per_sec                   : SUMMARY :   2 curious    hosts with   454.69    as average value and     0.03 standard deviation
CPU Efficiency                  : SUMMARY :  15 consistent hosts with    75.72 %  as average value and     0.29 standard deviation

Group 2 : Checking CPU perf
bogomips                        : SUMMARY :   3 consistent hosts with  3999.95    as average value and     0.01 standard deviation
loops_per_sec                   : SUMMARY :   3 consistent hosts with   453.80    as average value and     0.41 standard deviation
CPU Efficiency                  : SUMMARY :   3 consistent hosts with    75.73 %  as average value and     0.35 standard deviation

Group 0 : Checking Memory perf
1K                              : SUMMARY :   1 consistent hosts with  1738.72 MB/s as average value and     0.00 standard deviation
1K Thread effi.                 : SUMMARY :   1 consistent hosts with     2.49 MB/s as average value and     0.00 standard deviation
1K Forked Effi.                 : SUMMARY :   1 consistent hosts with    69.60 MB/s as average value and     0.00 standard deviation

4K                              : SUMMARY :   1 consistent hosts with  5696.44 MB/s as average value and     0.00 standard deviation
4K Thread effi.                 : SUMMARY :   1 consistent hosts with     2.58 MB/s as average value and     0.00 standard deviation
4K Forked Effi.                 : SUMMARY :   1 consistent hosts with    47.34 MB/s as average value and     0.00 standard deviation

1M                              : SUMMARY :   1 consistent hosts with  8906.97 MB/s as average value and     0.00 standard deviation
1M Thread effi.                 : SUMMARY :   1 consistent hosts with    10.27 MB/s as average value and     0.00 standard deviation
1M Forked Effi.                 : SUMMARY :   1 consistent hosts with    40.84 MB/s as average value and     0.00 standard deviation

16M                             : SUMMARY :   1 consistent hosts with  8685.59 MB/s as average value and     0.00 standard deviation
16M Thread effi.                : SUMMARY :   1 consistent hosts with    32.98 MB/s as average value and     0.00 standard deviation
16M Forked Effi.                : SUMMARY :   1 consistent hosts with     3.47 MB/s as average value and     0.00 standard deviation

128M                            : SUMMARY :   1 consistent hosts with  4885.78 MB/s as average value and     0.00 standard deviation
128M Thread effi.               : SUMMARY :   1 consistent hosts with    22.15 MB/s as average value and     0.00 standard deviation
128M Forked Effi.               : SUMMARY :   1 consistent hosts with     6.23 MB/s as average value and     0.00 standard deviation

1G                              : SUMMARY :   1 consistent hosts with  4870.91 MB/s as average value and     0.00 standard deviation

2G                              : SUMMARY :   1 consistent hosts with  4863.25 MB/s as average value and     0.00 standard deviation

Group 1 : Checking Memory perf
1K                              : SUMMARY :  15 curious    hosts with  1727.28 MB/s as average value and    11.52 standard deviation
1K Thread effi.                 : SUMMARY :  15 consistent hosts with     2.53 MB/s as average value and     0.04 standard deviation
1K Forked Effi.                 : SUMMARY :  15 consistent hosts with    67.81 MB/s as average value and     0.53 standard deviation

4K                              : SUMMARY :  15 consistent hosts with  5695.45 MB/s as average value and     9.45 standard deviation
4K Thread effi.                 : SUMMARY :  15 consistent hosts with     2.78 MB/s as average value and     0.04 standard deviation
4K Forked Effi.                 : SUMMARY :  15 consistent hosts with    47.23 MB/s as average value and     0.18 standard deviation

1M                              : SUMMARY :  15 consistent hosts with  8894.62 MB/s as average value and     1.38 standard deviation
1M Thread effi.                 : SUMMARY :  15 consistent hosts with    22.53 MB/s as average value and     0.36 standard deviation
1M Forked Effi.                 : SUMMARY :  15 consistent hosts with    40.99 MB/s as average value and     0.08 standard deviation

16M                             : SUMMARY :  15 consistent hosts with  8717.86 MB/s as average value and    19.18 standard deviation
16M Thread effi.                : SUMMARY :  15 consistent hosts with    34.02 MB/s as average value and     1.16 standard deviation
16M Forked Effi.                : SUMMARY :  15 consistent hosts with    12.44 MB/s as average value and     0.12 standard deviation

128M                            : SUMMARY :  15 consistent hosts with  7594.97 MB/s as average value and     4.76 standard deviation
128M Thread effi.               : SUMMARY :  15 consistent hosts with    22.28 MB/s as average value and     1.95 standard deviation
128M Forked Effi.               : SUMMARY :  15 consistent hosts with    14.37 MB/s as average value and     0.19 standard deviation

1G                              : SUMMARY :  15 consistent hosts with  7615.97 MB/s as average value and     8.38 standard deviation
1G Thread effi.                 : SUMMARY :  15 unstable   hosts with    17.32 MB/s as average value and     2.57 standard deviation
1G Forked Effi.                 : SUMMARY :  15 consistent hosts with    14.26 MB/s as average value and     0.10 standard deviation

2G                              : SUMMARY :  15 consistent hosts with  7614.04 MB/s as average value and     4.30 standard deviation
2G Thread effi.                 : SUMMARY :  15 unstable   hosts with    15.59 MB/s as average value and     1.69 standard deviation
2G Forked Effi.                 : SUMMARY :  15 consistent hosts with    14.24 MB/s as average value and     0.01 standard deviation

Group 2 : Checking Memory perf
1K                              : SUMMARY :   3 curious    hosts with  1719.04 MB/s as average value and     6.52 standard deviation
1K Thread effi.                 : SUMMARY :   3 consistent hosts with     2.49 MB/s as average value and     0.02 standard deviation
1K Forked Effi.                 : SUMMARY :   3 consistent hosts with    69.79 MB/s as average value and     0.48 standard deviation

4K                              : SUMMARY :   3 consistent hosts with  5713.28 MB/s as average value and     1.72 standard deviation
4K Thread effi.                 : SUMMARY :   3 consistent hosts with     2.60 MB/s as average value and     0.02 standard deviation
4K Forked Effi.                 : SUMMARY :   3 consistent hosts with    47.20 MB/s as average value and     0.15 standard deviation

1M                              : SUMMARY :   3 consistent hosts with  8905.61 MB/s as average value and     0.57 standard deviation
1M Thread effi.                 : SUMMARY :   3 consistent hosts with    10.25 MB/s as average value and     0.35 standard deviation
1M Forked Effi.                 : SUMMARY :   3 consistent hosts with    40.77 MB/s as average value and     0.09 standard deviation

16M                             : SUMMARY :   3 consistent hosts with  8671.78 MB/s as average value and    55.61 standard deviation
16M Thread effi.                : SUMMARY :   3 consistent hosts with    31.30 MB/s as average value and     1.29 standard deviation
16M Forked Effi.                : SUMMARY :   3 consistent hosts with     3.48 MB/s as average value and     0.02 standard deviation

128M                            : SUMMARY :   3 consistent hosts with  4901.83 MB/s as average value and     9.21 standard deviation
128M Thread effi.               : SUMMARY :   3 consistent hosts with    22.01 MB/s as average value and     1.76 standard deviation
128M Forked Effi.               : SUMMARY :   3 consistent hosts with     6.21 MB/s as average value and     0.01 standard deviation

1G                              : SUMMARY :   3 consistent hosts with  4875.24 MB/s as average value and     2.66 standard deviation

2G                              : SUMMARY :   3 consistent hosts with  4867.72 MB/s as average value and     2.64 standard deviation

Group 0 : Checking logical disks perf
standalone_randwrite_4k_IOps    : SUMMARY :   1 consistent hosts with   696.50 IOps as average value and     0.00 standard deviation
standalone_randread_4k_IOps     : SUMMARY :   1 consistent hosts with   403.00 IOps as average value and     0.00 standard deviation
standalone_read_1M_IOps         : SUMMARY :   1 consistent hosts with   188.00 IOps as average value and     0.00 standard deviation
standalone_write_1M_IOps        : SUMMARY :   1 consistent hosts with    10.00 IOps as average value and     0.00 standard deviation
simultaneous_randwrite_4k_IOps  : SUMMARY :   1 consistent hosts with   642.00 IOps as average value and     0.00 standard deviation
simultaneous_randread_4k_IOps   : SUMMARY :   1 consistent hosts with   427.50 IOps as average value and     0.00 standard deviation
simultaneous_read_1M_IOps       : SUMMARY :   1 consistent hosts with   187.50 IOps as average value and     0.00 standard deviation
simultaneous_write_1M_IOps      : SUMMARY :   1 consistent hosts with    81.50 IOps as average value and     0.00 standard deviation

Group 1 : Checking logical disks perf
standalone_randwrite_4k_IOps    : SUMMARY :  14 consistent hosts with   660.00 IOps as average value and    25.74 standard deviation
standalone_randwrite_4k_IOps    : SUMMARY :   1 curious    hosts with  1038.00 IOps as average value and     0.00 standard deviation
standalone_randwrite_4k_IOps    : SUMMARY :  14 unstable   hosts with   660.00 IOps as average value and    25.74 standard deviation
standalone_randread_4k_IOps     : SUMMARY :  15 consistent hosts with   303.80 IOps as average value and     4.85 standard deviation
standalone_read_1M_IOps         : SUMMARY :  15 consistent hosts with   183.03 IOps as average value and     2.90 standard deviation
standalone_write_1M_IOps        : SUMMARY :  14 consistent hosts with     7.57 IOps as average value and     0.37 standard deviation
standalone_write_1M_IOps        : SUMMARY :   1 curious    hosts with     6.50 IOps as average value and     0.00 standard deviation
standalone_write_1M_IOps        : SUMMARY :  15 unstable   hosts with     7.50 IOps as average value and     0.45 standard deviation
simultaneous_randwrite_4k_IOps  : SUMMARY :  30 unstable   hosts with   865.83 IOps as average value and   243.24 standard deviation
simultaneous_randread_4k_IOps   : SUMMARY :  15 consistent hosts with   326.17 IOps as average value and     5.60 standard deviation
simultaneous_read_1M_IOps       : SUMMARY :  15 consistent hosts with   184.50 IOps as average value and     1.43 standard deviation
simultaneous_write_1M_IOps      : SUMMARY :  30 unstable   hosts with    41.63 IOps as average value and     9.09 standard deviation

Group 2 : Checking logical disks perf
standalone_randwrite_4k_IOps    : SUMMARY :   3 consistent hosts with   727.67 IOps as average value and     1.55 standard deviation
standalone_randread_4k_IOps     : SUMMARY :   3 consistent hosts with   402.67 IOps as average value and     3.42 standard deviation
standalone_read_1M_IOps         : SUMMARY :   3 consistent hosts with   188.50 IOps as average value and     2.48 standard deviation
standalone_write_1M_IOps        : SUMMARY :   3 consistent hosts with     9.00 IOps as average value and     0.00 standard deviation
simultaneous_randwrite_4k_IOps  : SUMMARY :   3 consistent hosts with   657.83 IOps as average value and    12.14 standard deviation
simultaneous_randread_4k_IOps   : SUMMARY :   3 consistent hosts with   451.33 IOps as average value and     6.24 standard deviation
simultaneous_read_1M_IOps       : SUMMARY :   3 consistent hosts with   189.17 IOps as average value and     2.32 standard deviation
simultaneous_write_1M_IOps      : SUMMARY :   6 unstable   hosts with    78.83 IOps as average value and     8.72 standard deviation

Group 0 : Checking CPU perf
bogomips                        : SUMMARY :   1 consistent hosts with  3999.92    as average value and     0.00 standard deviation
loops_per_sec                   : SUMMARY :   1 consistent hosts with   453.28    as average value and     0.00 standard deviation
CPU Efficiency                  : SUMMARY :   1 consistent hosts with    75.83 %  as average value and     0.00 standard deviation

Group 1 : Checking CPU perf
bogomips                        : SUMMARY :  15 consistent hosts with  4000.23    as average value and     0.53 standard deviation
loops_per_sec                   : SUMMARY :  13 consistent hosts with   453.42    as average value and     0.35 standard deviation
loops_per_sec                   : SUMMARY :   2 curious    hosts with   454.69    as average value and     0.03 standard deviation
CPU Efficiency                  : SUMMARY :  15 consistent hosts with    75.72 %  as average value and     0.29 standard deviation

Group 2 : Checking CPU perf
bogomips                        : SUMMARY :   3 consistent hosts with  3999.95    as average value and     0.01 standard deviation
loops_per_sec                   : SUMMARY :   3 consistent hosts with   453.80    as average value and     0.41 standard deviation
CPU Efficiency                  : SUMMARY :   3 consistent hosts with    75.73 %  as average value and     0.35 standard deviation

Group 0 : Checking Memory perf
1K                              : SUMMARY :   1 consistent hosts with  1738.72 MB/s as average value and     0.00 standard deviation
1K Thread effi.                 : SUMMARY :   1 consistent hosts with     2.49 MB/s as average value and     0.00 standard deviation
1K Forked Effi.                 : SUMMARY :   1 consistent hosts with    69.60 MB/s as average value and     0.00 standard deviation

4K                              : SUMMARY :   1 consistent hosts with  5696.44 MB/s as average value and     0.00 standard deviation
4K Thread effi.                 : SUMMARY :   1 consistent hosts with     2.58 MB/s as average value and     0.00 standard deviation
4K Forked Effi.                 : SUMMARY :   1 consistent hosts with    47.34 MB/s as average value and     0.00 standard deviation

1M                              : SUMMARY :   1 consistent hosts with  8906.97 MB/s as average value and     0.00 standard deviation
1M Thread effi.                 : SUMMARY :   1 consistent hosts with    10.27 MB/s as average value and     0.00 standard deviation
1M Forked Effi.                 : SUMMARY :   1 consistent hosts with    40.84 MB/s as average value and     0.00 standard deviation

16M                             : SUMMARY :   1 consistent hosts with  8685.59 MB/s as average value and     0.00 standard deviation
16M Thread effi.                : SUMMARY :   1 consistent hosts with    32.98 MB/s as average value and     0.00 standard deviation
16M Forked Effi.                : SUMMARY :   1 consistent hosts with     3.47 MB/s as average value and     0.00 standard deviation

128M                            : SUMMARY :   1 consistent hosts with  4885.78 MB/s as average value and     0.00 standard deviation
128M Thread effi.               : SUMMARY :   1 consistent hosts with    22.15 MB/s as average value and     0.00 standard deviation
128M Forked Effi.               : SUMMARY :   1 consistent hosts with     6.23 MB/s as average value and     0.00 standard deviation

1G                              : SUMMARY :   1 consistent hosts with  4870.91 MB/s as average value and     0.00 standard deviation

2G                              : SUMMARY :   1 consistent hosts with  4863.25 MB/s as average value and     0.00 standard deviation

Group 1 : Checking Memory perf
1K                              : SUMMARY :  15 curious    hosts with  1727.28 MB/s as average value and    11.52 standard deviation
1K Thread effi.                 : SUMMARY :  15 consistent hosts with     2.53 MB/s as average value and     0.04 standard deviation
1K Forked Effi.                 : SUMMARY :  15 consistent hosts with    67.81 MB/s as average value and     0.53 standard deviation

4K                              : SUMMARY :  15 consistent hosts with  5695.45 MB/s as average value and     9.45 standard deviation
4K Thread effi.                 : SUMMARY :  15 consistent hosts with     2.78 MB/s as average value and     0.04 standard deviation
4K Forked Effi.                 : SUMMARY :  15 consistent hosts with    47.23 MB/s as average value and     0.18 standard deviation

1M                              : SUMMARY :  15 consistent hosts with  8894.62 MB/s as average value and     1.38 standard deviation
1M Thread effi.                 : SUMMARY :  15 consistent hosts with    22.53 MB/s as average value and     0.36 standard deviation
1M Forked Effi.                 : SUMMARY :  15 consistent hosts with    40.99 MB/s as average value and     0.08 standard deviation

16M                             : SUMMARY :  15 consistent hosts with  8717.86 MB/s as average value and    19.18 standard deviation
16M Thread effi.                : SUMMARY :  15 consistent hosts with    34.02 MB/s as average value and     1.16 standard deviation
16M Forked Effi.                : SUMMARY :  15 consistent hosts with    12.44 MB/s as average value and     0.12 standard deviation

128M                            : SUMMARY :  15 consistent hosts with  7594.97 MB/s as average value and     4.76 standard deviation
128M Thread effi.               : SUMMARY :  15 consistent hosts with    22.28 MB/s as average value and     1.95 standard deviation
128M Forked Effi.               : SUMMARY :  15 consistent hosts with    14.37 MB/s as average value and     0.19 standard deviation

1G                              : SUMMARY :  15 consistent hosts with  7615.97 MB/s as average value and     8.38 standard deviation
1G Thread effi.                 : SUMMARY :  15 unstable   hosts with    17.32 MB/s as average value and     2.57 standard deviation
1G Forked Effi.                 : SUMMARY :  15 consistent hosts with    14.26 MB/s as average value and     0.10 standard deviation

2G                              : SUMMARY :  15 consistent hosts with  7614.04 MB/s as average value and     4.30 standard deviation
2G Thread effi.                 : SUMMARY :  15 unstable   hosts with    15.59 MB/s as average value and     1.69 standard deviation
2G Forked Effi.                 : SUMMARY :  15 consistent hosts with    14.24 MB/s as average value and     0.01 standard deviation

Group 2 : Checking Memory perf
1K                              : SUMMARY :   3 curious    hosts with  1719.04 MB/s as average value and     6.52 standard deviation
1K Thread effi.                 : SUMMARY :   3 consistent hosts with     2.49 MB/s as average value and     0.02 standard deviation
1K Forked Effi.                 : SUMMARY :   3 consistent hosts with    69.79 MB/s as average value and     0.48 standard deviation

4K                              : SUMMARY :   3 consistent hosts with  5713.28 MB/s as average value and     1.72 standard deviation
4K Thread effi.                 : SUMMARY :   3 consistent hosts with     2.60 MB/s as average value and     0.02 standard deviation
4K Forked Effi.                 : SUMMARY :   3 consistent hosts with    47.20 MB/s as average value and     0.15 standard deviation

1M                              : SUMMARY :   3 consistent hosts with  8905.61 MB/s as average value and     0.57 standard deviation
1M Thread effi.                 : SUMMARY :   3 consistent hosts with    10.25 MB/s as average value and     0.35 standard deviation
1M Forked Effi.                 : SUMMARY :   3 consistent hosts with    40.77 MB/s as average value and     0.09 standard deviation

16M                             : SUMMARY :   3 consistent hosts with  8671.78 MB/s as average value and    55.61 standard deviation
16M Thread effi.                : SUMMARY :   3 consistent hosts with    31.30 MB/s as average value and     1.29 standard deviation
16M Forked Effi.                : SUMMARY :   3 consistent hosts with     3.48 MB/s as average value and     0.02 standard deviation

128M                            : SUMMARY :   3 consistent hosts with  4901.83 MB/s as average value and     9.21 standard deviation
128M Thread effi.               : SUMMARY :   3 consistent hosts with    22.01 MB/s as average value and     1.76 standard deviation
128M Forked Effi.               : SUMMARY :   3 consistent hosts with     6.21 MB/s as average value and     0.01 standard deviation

1G                              : SUMMARY :   3 consistent hosts with  4875.24 MB/s as average value and     2.66 standard deviation

2G                              : SUMMARY :   3 consistent hosts with  4867.72 MB/s as average value and     2.64 standard deviation