Disable parallelization on telemetry_unittests & set the number of shards to 2 (linux)

Disable parallelization on telemetry_unittests & set the number of shards to 2 (linux)

It's a known problem that launching browsers in parallel on Linux will cause the
test to hang due to deadlock (
https://github.com/catapult-project/catapult/issues/3074#issuecomment-266562500),
and since each hang test takes 1 min timeout, so we disable telemetry
parallelization & shards it on 2 machines to reduce the overall wait time.

BUG=676742
Review-Url: https://codereview.chromium.org/2653163002
Cr-Commit-Position: refs/heads/master@{#445998}
Committed: https://chromium.googlesource.com/chromium/src/+/027b82c601d86240ce7cdfe1f08b2f73eebbe840

[nednguyen, 2017-01-25 01:01:20]

nednguyen@google.com changed reviewers:
+ dpranke@chromium.org, jam@chromium.org

[nednguyen, 2017-01-25 01:01:30]

The CQ bit was checked by nednguyen@google.com to run a CQ dry run

[commit-bot: I haz the power, 2017-01-25 01:03:10]

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

[nednguyen, 2017-01-25 01:13:08]

Description was changed from

==========
Disable parallelization on telemetry_unittests & set the number of shards to 2

It's a known problem that launching browsers in parallel on Linux will cause the
test to hang due to deadlock (
https://github.com/catapult-project/catapult/issues/3074#issuecomment-266562500),
and since each hang test takes 1 min timeout, so we disable telemetry
parallelization & shards it on 2 machines to reduce the overall wait time.

BUG=676742
==========

to

==========
Disable parallelization on telemetry_unittests & set the number of shards to 2
(linux)

It's a known problem that launching browsers in parallel on Linux will cause the
test to hang due to deadlock (
https://github.com/catapult-project/catapult/issues/3074#issuecomment-266562500),
and since each hang test takes 1 min timeout, so we disable telemetry
parallelization & shards it on 2 machines to reduce the overall wait time.

BUG=676742
==========

[nednguyen, 2017-01-25 01:50:54]

On 2017/01/25 01:01:20, nednguyen wrote:

The tests are much more stable now on Linux:
Shard #0:
https://chromium-swarm.appspot.com/task?id=33ec10fc4f026510&refresh=10&show_r...
(532 tests run in 509.1s, 1 test needs to be retried)
Shard #1:
https://chromium-swarm.appspot.com/task?id=33ec10fd55cfec10&refresh=10&show_r...
(530 tests run in 705.5s, 1 test needs to be retried)

[commit-bot: I haz the power, 2017-01-25 02:17:37]

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

[commit-bot: I haz the power, 2017-01-25 02:17:38]

Dry run: This issue passed the CQ dry run.

[Dirk Pranke, 2017-01-25 02:46:56]

lgtm

[nednguyen, 2017-01-25 11:54:25]

The CQ bit was checked by nednguyen@google.com

[commit-bot: I haz the power, 2017-01-25 11:54:37]

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, 2017-01-25 11:58:28]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485345265388790, "parent_rev":
"68693ab02e29631f4b484299fab89a66c768b01f", "commit_rev":
"027b82c601d86240ce7cdfe1f08b2f73eebbe840"}

[commit-bot: I haz the power, 2017-01-25 11:59:06]

Description was changed from

==========
Disable parallelization on telemetry_unittests & set the number of shards to 2
(linux)

It's a known problem that launching browsers in parallel on Linux will cause the
test to hang due to deadlock (
https://github.com/catapult-project/catapult/issues/3074#issuecomment-266562500),
and since each hang test takes 1 min timeout, so we disable telemetry
parallelization & shards it on 2 machines to reduce the overall wait time.

BUG=676742
==========

to

==========
Disable parallelization on telemetry_unittests & set the number of shards to 2
(linux)

It's a known problem that launching browsers in parallel on Linux will cause the
test to hang due to deadlock (
https://github.com/catapult-project/catapult/issues/3074#issuecomment-266562500),
and since each hang test takes 1 min timeout, so we disable telemetry
parallelization & shards it on 2 machines to reduce the overall wait time.

BUG=676742

Review-Url: https://codereview.chromium.org/2653163002
Cr-Commit-Position: refs/heads/master@{#445998}
Committed:
https://chromium.googlesource.com/chromium/src/+/027b82c601d86240ce7cdfe1f08b...
==========

[commit-bot: I haz the power, 2017-01-25 11:59:06]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/027b82c601d86240ce7cdfe1f08b...

[jam, 2017-01-25 17:05:49]

If it's taking 700s in one shard, that's too long. We aim to make each shard
take 5 minutes. Can you use 4 shards instead?