Patches to divert PHP8 Excimer profiles to separate ArcLamp sinks (TT385199)

0001-Route-PHP8-Excimer-profiles-to-separate-ArcLamp-sink.patch

# operations/mediawiki-config

From 17163a2df5ea1891ddf03b650791782e3be93ce1 Mon Sep 17 00:00:00 2001
From: Ori Livneh <ori.livneh@gmail.com>
Date: Thu, 6 Feb 2025 12:35:26 -0500
Subject: [PATCH 1/1] Route PHP8 Excimer profiles to separate ArcLamp sinks

---
 src/Profiler.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Profiler.php b/src/Profiler.php
index f5a8bf9913..eb5955dba1 100644
--- a/src/Profiler.php
+++ b/src/Profiler.php
@@ -235,6 +235,13 @@ class Profiler {
        if ( ClusterConfig::getInstance()->isK8s() ) {
            $redisChannel .= '-k8s';
        }
+       // Temporarily route PHP 8 profiles to a separate set of sinks
+       // (excimer-k8s-php8, excimer-k8s-php8-wall) during the migration to
+       // PHP 8, to facilitate comparison and diffing with PHP 7 profiles
+       // (TT385199).
+       if ( PHP_MAJOR_VERSION === 8 ) {
+           $redisChannel .= '-php8';
+       }
 
        // The period is 60s, so there's no point waiting for more samples to arrive
        // before the end of the request, they probably won't.
-- 
2.48.1.362

0001-Set-up-ArcLamp-pipeline-for-PHP8.patch

# operations/puppet

From a78cf309cc09eb6bd3af4950261eba36abcc3dab Mon Sep 17 00:00:00 2001
From: Ori Livneh <ori.livneh@gmail.com>
Date: Thu, 6 Feb 2025 12:28:49 -0500
Subject: [PATCH 1/1] Set up ArcLamp pipeline for PHP8

---
 modules/arclamp/manifests/init.pp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/arclamp/manifests/init.pp b/modules/arclamp/manifests/init.pp
index 9f635e5d58..57813a7f8a 100644
--- a/modules/arclamp/manifests/init.pp
+++ b/modules/arclamp/manifests/init.pp
@@ -181,5 +181,9 @@ class arclamp(
             description => 'PHP Excimer (k8s CPU)';
         'excimer-k8s-wall': # T288165
             description => 'PHP Excimer (k8s wall clock)';
+        'excimer-php8-k8s': # T385199
+            description => 'PHP Excimer (k8s, PHP8 CPU)';
+        'excimer-php8-k8s-wall': # T385199
+            description => 'PHP Excimer (k8s, PHP8 wall clock)';
     }
 }
-- 
2.48.1.362