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| author | Lukas Larsson <[email protected]> | 2014-09-12 16:38:00 +0200 |
|---|---|---|
| committer | Lukas Larsson <[email protected]> | 2016-02-02 10:45:21 +0100 |
| commit | 664ed2a6fd2b324bb6b56db3d3eca853cfda8f61 (patch) | |
| tree | 286743a4b1f794948329961e7f5879b5f54f54a5 /erts/emulator/beam/atom.names | |
| parent | eea5f896780e07f7ca76685061d01e7be5a7abaa (diff) | |
| download | otp-664ed2a6fd2b324bb6b56db3d3eca853cfda8f61.tar.gz otp-664ed2a6fd2b324bb6b56db3d3eca853cfda8f61.tar.bz2 otp-664ed2a6fd2b324bb6b56db3d3eca853cfda8f61.zip | |
erts: Add microstate accounting
Microstate accounting is a way to track which state the
different threads within ERTS are in. The main usage area
is to pin point performance bottlenecks by checking which
states the threads are in and then from there figuring out
why and where to optimize.
Since checking whether microstate accounting is on or off is
relatively expensive if done in a short loop only a few of the
states are enabled by default and more states can be enabled
through configure.
I've done some benchmarking and the overhead with it turned off
is not noticible and with it on it is a fraction of a percent.
If you enable the extra states, depending on the benchmark,
the ovehead when turned off is about 1% and when turned on
somewhere inbetween 5-15%.
OTP-12345
Diffstat (limited to 'erts/emulator/beam/atom.names')
| -rw-r--r-- | erts/emulator/beam/atom.names | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names index 1629a92aa9..6fb08ee896 100644 --- a/erts/emulator/beam/atom.names +++ b/erts/emulator/beam/atom.names @@ -102,6 +102,7 @@ atom asynchronous atom atom atom atom_used atom attributes +atom await_microstate_accounting_modifications atom await_port_send_result atom await_proc_exit atom await_result @@ -172,6 +173,7 @@ atom const atom context_switches atom control atom copy +atom counters atom cpu atom cpu_timestamp atom cr @@ -269,6 +271,7 @@ atom get_tcw atom getenv atom gather_gc_info_result atom gather_io_bytes +atom gather_microstate_accounting_result atom gather_sched_wall_time_result atom getting_linked atom getting_unlinked @@ -360,6 +363,7 @@ atom merge_trap atom meta atom meta_match_spec atom micro_seconds +atom microstate_accounting atom milli_seconds atom min_heap_size atom min_bin_vheap_size |