Commit 6bb7033a authored by Stephen Roe's avatar Stephen Roe Committed by Commit Bot

Change the fuchsia_arm64 trybot from a 50% experiment to 100%.

Build times for the arm64 CQ 50% bot experiment over the last week
are similar to the existing x64 CQ trybot:

builder	fuchsia_arm64	fuchsia_x64
builds	549	1114
build_minutes_p50	27.18	29.33
build_minutes_p70	47.80	47.18
build_minutes_p90	58.42	57.23

Stability is good at 50%
https://ci.chromium.org/p/chromium/builders/try/fuchsia_arm64

Capacity is also good at 50%.  The average number of arm64 bots running
at one time at 50% CQ varies from 24 to 36 by day out of 240 bots.
Typical spikes are 50 to 60 bots active when a CL build is in progress
or 150 to 240 bots active when multiple CL builds overlap.

Bot usage percentages on a weekday are
p50  27 bots
p90  76 bots
p99 131 bots
out of 240 bots

There is more pending time info at
https://docs.google.com/spreadsheets/d/1yzHLqp7oNFXlKkRg3whoZ2QhAwC4DYN9pJz8PaXwRYA

There is more build time info at
https://docs.google.com/spreadsheets/d/1A1B6zgLw2VnBXD5IQXrPZGr5NavJrhjhj8JKeunSvno

There is more capacity and bot usage info at
https://docs.google.com/spreadsheets/d/15oFJzlDLbfLLnndaTSH2Vsi14QgfiWpIm1dbgn742mU

Bug: 1042511
Change-Id: I4fbb69b3c33f3b6ae172f64fb471f88748f591d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2288709Reviewed-by: default avatarStephen Martinis <martiniss@chromium.org>
Commit-Queue: Stephen Roe <steveroe@google.com>
Cr-Commit-Position: refs/heads/master@{#786548}
parent 2c242ae1
......@@ -493,7 +493,7 @@ config_groups {
}
builders {
name: "chromium/try/fuchsia_arm64"
experiment_percentage: 50
experiment_percentage: 100
}
builders {
name: "chromium/try/fuchsia_x64"
......
......@@ -338,7 +338,7 @@ as required builders.
* Experiment percentage: 50
* [fuchsia_arm64](https://ci.chromium.org/p/chromium/builders/try/fuchsia_arm64) ([definition](https://cs.chromium.org/search?q=package:%5Echromium$+file:/cq.star$+-file:/beta/+-file:/stable/+fuchsia_arm64)) ([matching builders](https://cs.chromium.org/search?q=+file:trybots.py+fuchsia_arm64))
* Experiment percentage: 50
* Experiment percentage: 100
* [ios-simulator-code-coverage](https://ci.chromium.org/p/chromium/builders/try/ios-simulator-code-coverage) ([definition](https://cs.chromium.org/search?q=package:%5Echromium$+file:/cq.star$+-file:/beta/+-file:/stable/+ios-simulator-code-coverage)) ([matching builders](https://cs.chromium.org/search?q=+file:trybots.py+ios-simulator-code-coverage))
* Experiment percentage: 3
......
......@@ -365,7 +365,7 @@ try_.chromium_linux_builder(
try_.chromium_linux_builder(
name = 'fuchsia_arm64',
tryjob = try_.job(
experiment_percentage=50,
experiment_percentage=100,
),
)
......
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