1IO::Async::Metrics(3) User Contributed Perl DocumentationIO::Async::Metrics(3)
2
3
4

NAME

6       "IO::Async::Metrics" - report metrics about "IO::Async" to
7       "Metrics::Any"
8

DESCRIPTION

10       This module contains the implementation of metrics-reporting code from
11       "IO::Async" to provide information about its operation into
12       Metrics::Any.
13

METRICS

15       The following metrics are reported:
16
17   io_async_forks
18       A counter giving the number of times that fork(2) has been called by
19       the IO::Async::Loop.
20
21   io_async_notifiers
22       A gauge giving the number of IO::Async::Notifiers currently registered
23       with the Loop.
24
25   io_async_processing
26       A time distribution giving the amount of time spent processing IO
27       events. This time does not include the time spent blocking on the
28       underlying kernel system call to wait for IO events, but only the time
29       spent in userland afterwards to handle them.
30
31   io_async_resolver_lookups
32       A labelled counter giving the number of attempted lookups by the
33       IO::Async::Resolver.
34
35       This metric has one label, "type", containing the type of lookup; e.g.
36       "getaddrinfo".
37
38   io_async_resolver_failures
39       A labelled counter giving the number of Resolver lookups that failed.
40       This is labelled as for "io_async_resolver_lookups".
41
42   io_async_stream_read
43       A counter giving the number of bytes read by IO::Async::Stream
44       instances.  Note that for SSL connections, this will only be able to
45       count bytes of plaintext, not ciphertext, and thus will be a slight
46       under-estimate in this case.
47
48   io_async_stream_written
49       A counter giving the number of bytes written by Stream instances. Note
50       again for SSL connections this will only be able to count bytes of
51       plaintext.
52

AUTHOR

54       Paul Evans <leonerd@leonerd.org.uk>
55
56
57
58perl v5.36.0                      2023-01-20             IO::Async::Metrics(3)
Impressum