predictors: Add precision / recall histograms for speculative prefetch.

predictors: Add precision / recall histograms for speculative prefetch.

When the prefetch predictor is learning, log the ratios of resources
correctly predicted compared to the predicted and actual resources. This
is to assess the effectiveness of learning in the wild.

BUG=680049
Review-Url: https://codereview.chromium.org/2640343002
Cr-Commit-Position: refs/heads/master@{#445354}
Committed: https://chromium.googlesource.com/chromium/src/+/f5c04a333854a4e7f36dd9cdf8d8b2ac2b083672

[Benoit L, 2017-01-19 17:27:04]

The CQ bit was checked by lizeb@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-01-19 17:27:36]

Dry run: 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, 2017-01-19 18:46:52]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-01-19 18:46:53]

Dry run: This issue passed the CQ dry run.

[Benoit L, 2017-01-20 10:26:43]

lizeb@chromium.org changed reviewers:
+ mattcary@chromium.org

[mattcary, 2017-01-20 13:18:35]

lgtm

[Benoit L, 2017-01-20 13:35:57]

lizeb@chromium.org changed reviewers:
+ isherman@chromium.org

[Benoit L, 2017-01-20 13:35:58]

isherman: Please take a look at the metrics part of the change, thanks!

[Ilya Sherman, 2017-01-21 00:14:59]

metrics lgtm

[Benoit L, 2017-01-23 09:08:01]

The CQ bit was checked by lizeb@chromium.org

[commit-bot: I haz the power, 2017-01-23 09:08:17]

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, 2017-01-23 10:01:17]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-01-23 10:01:18]

Try jobs failed on following builders:
  ios-simulator on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/bui...)

[Benoit L, 2017-01-23 10:12:55]

The CQ bit was checked by lizeb@chromium.org

[commit-bot: I haz the power, 2017-01-23 10:13:14]

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, 2017-01-23 11:30:09]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485166375361140, "parent_rev":
"e82a42f8ef3d1334612794887f4263cb002a52c0", "commit_rev":
"f5c04a333854a4e7f36dd9cdf8d8b2ac2b083672"}

[commit-bot: I haz the power, 2017-01-23 11:30:42]

Description was changed from

==========
predictors: Add precision / recall histograms for speculative prefetch.

When the prefetch predictor is learning, log the ratios of resources
correctly predicted compared to the predicted and actual resources. This
is to assess the effectiveness of learning in the wild.

BUG=680049
==========

to

==========
predictors: Add precision / recall histograms for speculative prefetch.

When the prefetch predictor is learning, log the ratios of resources
correctly predicted compared to the predicted and actual resources. This
is to assess the effectiveness of learning in the wild.

BUG=680049

Review-Url: https://codereview.chromium.org/2640343002
Cr-Commit-Position: refs/heads/master@{#445354}
Committed:
https://chromium.googlesource.com/chromium/src/+/f5c04a333854a4e7f36dd9cdf8d8...
==========

[commit-bot: I haz the power, 2017-01-23 11:30:42]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/f5c04a333854a4e7f36dd9cdf8d8...