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Diffstat (limited to 'bdb/lock/Design')
| -rw-r--r-- | bdb/lock/Design | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/bdb/lock/Design b/bdb/lock/Design index ac8f0b02fbf..f0bb5c6e99c 100644 --- a/bdb/lock/Design +++ b/bdb/lock/Design @@ -1,7 +1,15 @@ -# $Id: Design,v 11.3 2000/02/19 20:58:03 bostic Exp $ +# $Id: Design,v 11.5 2002/02/01 19:07:18 bostic Exp $ Synchronization in the Locking Subsystem +This is a document that describes how we implemented fine-grain locking +in the lock manager (that is, locking on a hash bucket level instead of +locking the entire region). We found that the increase in concurrency +was not sufficient to warrant the increase in complexity or the additional +cost of performing each lock operation. Therefore, we don't use this +any more. Should we have to do fine-grain locking in a future release, +this would be a reasonable starting point. + =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 1. Data structures =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |