Use more conservative average promotion ratio for initial heap size.

Use more conservative average promotion ratio for initial heap size.

BUG=

Committed: https://crrev.com/35b88a352d74d36a78b85f90cf11fb6898e47085
Cr-Commit-Position: refs/heads/master@{#26238}

[jochen (gone - plz use gerrit), 2015-01-23 08:20:19]

jochen@chromium.org changed reviewers:
+ jochen@chromium.org

[jochen (gone - plz use gerrit), 2015-01-23 08:20:19]

the actual change is that you start with a initial old gen at the max size
(instead of 1/2 max size), and you only start recording the survival rate after
one gc, right?

[Hannes Payer (out of office), 2015-01-23 08:25:30]

On 2015/01/23 08:20:19, jochen (slow) wrote:
> the actual change is that you start with a initial old gen at the max size
> (instead of 1/2 max size), and you only start recording the survival rate
after
> one gc, right?

The actual change is that I am using now the promotion ratio, which is less
aggressive.

[jochen (gone - plz use gerrit), 2015-01-23 08:26:57]

lgtm

[Hannes Payer (out of office), 2015-01-23 09:13:13]

The CQ bit was checked by hpayer@chromium.org

[commit-bot: I haz the power, 2015-01-23 09:14:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/849693004/40001

[commit-bot: I haz the power, 2015-01-23 09:15:30]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-01-23 09:15:41]

Patchset 3 (id:??) landed as
https://crrev.com/35b88a352d74d36a78b85f90cf11fb6898e47085
Cr-Commit-Position: refs/heads/master@{#26238}