diff options
| author | Julian Andres Klode <jak@debian.org> | 2016-01-03 17:45:26 +0100 |
|---|---|---|
| committer | Julian Andres Klode <jak@debian.org> | 2016-01-03 17:56:49 +0100 |
| commit | 3b4cbca22f473708063c157cc75a2ef411fe6480 (patch) | |
| tree | 75d6ad52ad637c0a0d7993e6753f778e57ad1944 | |
| parent | 38a5b1ceeeca6ff530a2816a39bcd10d14c85d33 (diff) | |
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
| -rw-r--r-- | apt-pkg/pkgcache.cc | 2 |
1 files changed, 1 insertions, 1 deletions
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; |