Reduce noise in GC metrics.

Reduce noise in GC metrics.

This patch changes GC metrics to be global instead of per RAIL stage.
For motivation see the linked bug.

Thus the following four metrics:
- Response-v8-gc-full-mark-compactor_max
- Animation-v8-gc-full-mark-compactor_max
- Idle-v8-gc-full-mark-compactor_max
- Load-v8-gc-full-mark-compactor_max

will be combined into one metric:
- v8-gc-full-mark-compactor_max


Additionally GC metrics now ignore GC events forced by the runner
and report only the top GC phases, which reduces number of results.

BUG=catapult:#2444

Committed: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+/c3e989de9c0b009bbcfd27f3652e6b71fbb8ee6e

[ulan, 2016-06-30 16:56:48]

Description was changed from

==========
Tune gc metrics

BUG=catapult:#
==========

to

==========
Reduce noise in GC metrics.

This patch changes GC metrics to be global instead of per RAIL stage.
For motivation see the linked bug.

Thus the following four metrics:
- Response-v8-gc-full-mark-compactor_max
- Animation-v8-gc-full-mark-compactor_max
- Idle-v8-gc-full-mark-compactor_max
- Load-v8-gc-full-mark-compactor_max

will be combined into one metric:
- v8-gc-full-mark-compactor_max

BUG=catapult:2444
==========

[ulan, 2016-06-30 16:57:32]

Description was changed from

==========
Reduce noise in GC metrics.

This patch changes GC metrics to be global instead of per RAIL stage.
For motivation see the linked bug.

Thus the following four metrics:
- Response-v8-gc-full-mark-compactor_max
- Animation-v8-gc-full-mark-compactor_max
- Idle-v8-gc-full-mark-compactor_max
- Load-v8-gc-full-mark-compactor_max

will be combined into one metric:
- v8-gc-full-mark-compactor_max

BUG=catapult:2444
==========

to

==========
Reduce noise in GC metrics.

This patch changes GC metrics to be global instead of per RAIL stage.
For motivation see the linked bug.

Thus the following four metrics:
- Response-v8-gc-full-mark-compactor_max
- Animation-v8-gc-full-mark-compactor_max
- Idle-v8-gc-full-mark-compactor_max
- Load-v8-gc-full-mark-compactor_max

will be combined into one metric:
- v8-gc-full-mark-compactor_max

BUG=catapult:#2444
==========

[ulan, 2016-06-30 16:59:23]

Patchset #1 (id:1) has been deleted

[ulan, 2016-06-30 17:03:04]

Description was changed from

==========
Reduce noise in GC metrics.

This patch changes GC metrics to be global instead of per RAIL stage.
For motivation see the linked bug.

Thus the following four metrics:
- Response-v8-gc-full-mark-compactor_max
- Animation-v8-gc-full-mark-compactor_max
- Idle-v8-gc-full-mark-compactor_max
- Load-v8-gc-full-mark-compactor_max

will be combined into one metric:
- v8-gc-full-mark-compactor_max

BUG=catapult:#2444
==========

to

==========
Reduce noise in GC metrics.

This patch changes GC metrics to be global instead of per RAIL stage.
For motivation see the linked bug.

Thus the following four metrics:
- Response-v8-gc-full-mark-compactor_max
- Animation-v8-gc-full-mark-compactor_max
- Idle-v8-gc-full-mark-compactor_max
- Load-v8-gc-full-mark-compactor_max

will be combined into one metric:
- v8-gc-full-mark-compactor_max


Additionally GC metrics now ignore GC events forced by the runner
and report only the top GC phases, which reduces number of results.

BUG=catapult:#2444
==========

[ulan, 2016-06-30 17:09:51]

ulan@chromium.org changed reviewers:
+ eakuefner@chromium.org, hpayer@chromium.org

[ulan, 2016-06-30 17:09:52]

Hannes, ptal.

Ethan, feel free to check style and rubber-stamp.

[eakuefner, 2016-06-30 19:58:45]

lgtm from my perspective

[Hannes Payer (out of office), 2016-07-04 11:11:29]

lgtm

[ulan, 2016-07-04 16:49:01]

The CQ bit was checked by ulan@chromium.org

[ulan, 2016-07-04 16:49:01]

The patchset sent to the CQ was uploaded after l-g-t-m from
eakuefner@chromium.org, hpayer@chromium.org
Link to the patchset: https://codereview.chromium.org/2106743005/#ps60001
(title: "rebase")

[commit-bot: I haz the power, 2016-07-04 16:49:04]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-04 17:13:36]

Description was changed from

==========
Reduce noise in GC metrics.

This patch changes GC metrics to be global instead of per RAIL stage.
For motivation see the linked bug.

Thus the following four metrics:
- Response-v8-gc-full-mark-compactor_max
- Animation-v8-gc-full-mark-compactor_max
- Idle-v8-gc-full-mark-compactor_max
- Load-v8-gc-full-mark-compactor_max

will be combined into one metric:
- v8-gc-full-mark-compactor_max


Additionally GC metrics now ignore GC events forced by the runner
and report only the top GC phases, which reduces number of results.

BUG=catapult:#2444
==========

to

==========
Reduce noise in GC metrics.

This patch changes GC metrics to be global instead of per RAIL stage.
For motivation see the linked bug.

Thus the following four metrics:
- Response-v8-gc-full-mark-compactor_max
- Animation-v8-gc-full-mark-compactor_max
- Idle-v8-gc-full-mark-compactor_max
- Load-v8-gc-full-mark-compactor_max

will be combined into one metric:
- v8-gc-full-mark-compactor_max


Additionally GC metrics now ignore GC events forced by the runner
and report only the top GC phases, which reduces number of results.

BUG=catapult:#2444

Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...
==========

[commit-bot: I haz the power, 2016-07-04 17:13:37]

Committed patchset #3 (id:60001) as
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...