From b4717b61631c4b64d7d6e35992ca86ef96af9a16 Mon Sep 17 00:00:00 2001
From: Jehan-Guillaume de Rorthais <ioguix@free.fr>
Date: Thu, 30 Jun 2022 19:52:18 +0200
Subject: [PATCH] Show autovac max_workers only on compatible versions

---
 check_pgactivity | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/check_pgactivity b/check_pgactivity
index 7d27da2..2a129aa 100755
--- a/check_pgactivity
+++ b/check_pgactivity
@@ -2153,7 +2153,9 @@ sub check_autovacuum {
 
     @perfdata = map { [ $_, $activity{$_}  ] } keys %activity;
     push @perfdata, [ 'oldest_autovacuum', $oldest, 's' ];
-    push @perfdata, [ 'max_workers', $max_workers ];
+    push @perfdata, [ 'max_workers', $max_workers ]
+        if $hosts[0]->{'version_num'} >= $PG_VERSION_83;
+
     push @msg, "Number of autovacuum: $numautovac";
     push @msg, "Oldest autovacuum: " . to_interval($oldest) if $oldest ne "NaN";