diff options
| author | Ben Becker <ben.becker@10gen.com> | 2012-11-16 13:05:50 -0800 |
|---|---|---|
| committer | Ben Becker <ben.becker@10gen.com> | 2012-11-16 13:42:55 -0800 |
| commit | 6b5cf42aeebe056b8905ad82b79d0612e7d8d7c3 (patch) | |
| tree | 4abe5ba92bef80ebb30d131884279380a9728652 /src | |
| parent | 792e4ec3782ff1019067efeaa0432c951180b058 (diff) | |
| download | mongo-6b5cf42aeebe056b8905ad82b79d0612e7d8d7c3.tar.gz | |
SERVER-7159: make largest freelist bucket 16mb
Diffstat (limited to 'src')
| -rw-r--r-- | src/mongo/db/namespace_details.cpp | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/src/mongo/db/namespace_details.cpp b/src/mongo/db/namespace_details.cpp index bd38b666f3e..6175dbd3513 100644 --- a/src/mongo/db/namespace_details.cpp +++ b/src/mongo/db/namespace_details.cpp @@ -36,14 +36,16 @@ namespace mongo { BSONObj idKeyPattern = fromjson("{\"_id\":1}"); - /* deleted lists -- linked lists of deleted records -- are placed in 'buckets' of various sizes - so you can look for a deleterecord about the right size. + /* Deleted list buckets are used to quickly locate free space based on size. Each bucket + contains records up to that size. All records > 4mb are placed into the 16mb bucket. */ int bucketSizes[] = { - 32, 64, 128, 256, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, - 0x8000, 0x10000, 0x20000, 0x40000, 0x80000, 0x100000, 0x200000, - 0x400000, 0x800000 - }; + 0x20, 0x40, 0x80, 0x100, + 0x200, 0x400, 0x800, 0x1000, + 0x2000, 0x4000, 0x8000, 0x10000, + 0x20000, 0x40000, 0x80000, 0x100000, + 0x200000, 0x400000, 0x1000000, + }; NamespaceDetails::NamespaceDetails( const DiskLoc &loc, bool capped ) { /* be sure to initialize new fields here -- doesn't default to zeroes the way we use it */ |