Lines Matching refs:overhead

3 The overhead can be shown in two columns as 'Children' and 'Self' when
4 perf collects callchains.  The 'self' overhead is simply calculated by
7 'self' overhead values should be 100%.
9 The 'children' overhead is calculated by adding all period values of
10 the child functions so that it can show the total overhead of the
15 It might be confusing that the sum of all the 'children' overhead
17 'self' overhead of its child functions.  But with this enabled, users
18 can find which function has the most overhead even if samples are
45 in the usual (self-overhead-only) output of perf report:
64 When the --children option is enabled, the 'self' overhead values of
66 calculate the 'children' overhead.  In this case the report could be
95 In the above output, the 'self' overhead of 'foo' (60%) was add to the
96 'children' overhead of 'bar', 'main' and '\_\_libc_start_main'.
97 Likewise, the 'self' overhead of 'bar' (40%) was added to the
98 'children' overhead of 'main' and '\_\_libc_start_main'.
101 same (100%) 'children' overhead (even though they have zero 'self'
102 overhead) and they are the parents of 'foo' and 'bar'.
104 Since v3.16 the 'children' overhead is shown by default and the output
105 is sorted by its values. The 'children' overhead is disabled by