From 3b4cbca22f473708063c157cc75a2ef411fe6480 Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <jak@debian.org>
Date: Sun, 3 Jan 2016 17:45:26 +0100
Subject: Increase APT::Cache-HashTableSize default to 50503

This drop the hash table utilization from a high 98%
to acceptable 74% on unstable, and the average bucket length
from 4.6 to 1.8.

This improves performance by about 5%, while increasing
the size of the cache by 0.2 out of 38MB, that is 0.5%.

48481 is a nice number
---
 apt-pkg/pkgcache.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'apt-pkg')

diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc
index 4d8b9bc41..3c7fac642 100644
--- a/apt-pkg/pkgcache.cc
+++ b/apt-pkg/pkgcache.cc
@@ -94,7 +94,7 @@ pkgCache::Header::Header()
    VerSysName = 0;
    Architecture = 0;
    SetArchitectures(0);
-   SetHashTableSize(_config->FindI("APT::Cache-HashTableSize", 15013));
+   SetHashTableSize(_config->FindI("APT::Cache-HashTableSize", 50503));
    memset(Pools,0,sizeof(Pools));
 
    CacheFileSize = 0;
-- 
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