Raise FD limit on Mac for simple cache backend performance.

Raise FD limit on Mac for simple cache backend performance.

The simple cache can use too many FDs and crash systems with low FD
limits, like Macs. Longer term we should probably have ways to not
keep so many files open simultaneously, but the quick fix is to raise
the limit on Mac.

R=jkarlin@chromium.org,clamy@chromium.org
BUG=634413
Committed: https://crrev.com/a6fd373bc442e38505a782362514bd0ffbfeaf98
Cr-Commit-Position: refs/heads/master@{#423846}

[gavinp, 2016-10-06 15:57:48]

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

[commit-bot: I haz the power, 2016-10-06 15:58:06]

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

[gavinp, 2016-10-06 16:06:36]

Note that base::SetFdLimit() saturates, so there's no need to look at the soft
limits her to make sure this is having an effect.

clamy: PTAL
jkarlin: FYI

[commit-bot: I haz the power, 2016-10-06 17:18:19]

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

[commit-bot: I haz the power, 2016-10-06 17:18:19]

Dry run: This issue passed the CQ dry run.

[clamy, 2016-10-07 11:07:09]

Thanks! Lgtm.

[gavinp, 2016-10-07 13:33:04]

The CQ bit was checked by gavinp@chromium.org

[commit-bot: I haz the power, 2016-10-07 13:33:22]

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, 2016-10-07 13:39:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-07 13:41:41]

Description was changed from

==========
Raise FD limit on Mac for simple cache backend performance.

The simple cache can use too many FDs and crash systems with low FD
limits, like Macs. Longer term we should probably have ways to not
keep so many files open simultaneously, but the quick fix is to raise
the limit on Mac.

R=jkarlin@chromium.org,clamy@chromium.org
BUG=634413
==========

to

==========
Raise FD limit on Mac for simple cache backend performance.

The simple cache can use too many FDs and crash systems with low FD
limits, like Macs. Longer term we should probably have ways to not
keep so many files open simultaneously, but the quick fix is to raise
the limit on Mac.

R=jkarlin@chromium.org,clamy@chromium.org
BUG=634413

Committed: https://crrev.com/a6fd373bc442e38505a782362514bd0ffbfeaf98
Cr-Commit-Position: refs/heads/master@{#423846}
==========

[commit-bot: I haz the power, 2016-10-07 13:41:42]

Patchset 1 (id:??) landed as
https://crrev.com/a6fd373bc442e38505a782362514bd0ffbfeaf98
Cr-Commit-Position: refs/heads/master@{#423846}