A couple of questions on understanding go pprof's memory profile...
When I list a certain function (with --alloc_objects), I see an allocation
number associated with an import line mysteriously. I am pretty certain I
can rule out any source line offset. For example,
(pprof) list foo
Total: 534804146
ROUTINE ======================== (snip)
24057960 27540717 (flat, cum) 5.15% of Total
. . 1:package protocol
. . 2:
. . 3:import (
12092676 12092676 4: "bytes"
. . 5: "fmt"
. . 6: "net/url"
. . 7: "strconv"
. . 8: "strings"
. . 9: "time"
. . 10: "unicode"
. . 11:)
Any idea how to interpret this?
In addition, is there a way to drill down further into exactly what type of
memory allocation is contributing to the allocation when I list a function?
The tree/web/pdf view doesn't break down further function names (only shows
the boxes with what I believe is the individual allocation size). I'm kind
of guessing from the line of code on what it is, but it'd be great if there
is a way to track down exactly what type of memory allocation it is (string
copy, map growth, byte allocation, etc.). For example,
(pprof) list add
Total: 534804146
ROUTINE ======================== (snip)
17248777 17248777 (flat, cum) 3.23% of Total
. . 220: l *logger
. . 221:}
. . 222:
. . 223:func (l *logger) add(data
map[string]interface{}) {
. . 224: if id := l.Id(); id != "" {
17248777 17248777 225: data[ID] = id
. . 226: }
. . 227:}
. . 228:
where id is a string.
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