From a9ee94466e90cfdb8b8e47c2da2f8f99da15daa5 Mon Sep 17 00:00:00 2001
From: Rene Fichtmueller <renefichtmueller@MacBook-Pro-von-Rene.local>
Date: Sat, 28 Mar 2026 15:16:42 +1300
Subject: [PATCH] perf: reduce audit concurrency to 3 to avoid PDB hammering

---
 audit/audit.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/audit/audit.py b/audit/audit.py
index b4f1abd..9d17f3e 100644
--- a/audit/audit.py
+++ b/audit/audit.py
@@ -51,7 +51,8 @@ RIPE_BASE      = "https://stat.ripe.net/data"
 BATCH_SIZE     = 100
 TIMEOUT_PC     = 90    # large networks (Cloudflare, Amazon) can take 60–80s
 TIMEOUT_AUTH   = 30
-CONCURRENCY    = 4     # parallel PeerCortex requests
+CONCURRENCY    = 3     # parallel PeerCortex requests — keep low to avoid PDB hammering
+                       # (each PC lookup triggers 3+ PDB calls internally)
 
 # Tolerance for prefix/neighbour counts (BGP timing differences are normal)
 PREFIX_TOL_PCT = 0.05   # 5%