Update of /project/elephant/cvsroot/elephant In directory clnet:/tmp/cvs-serv4997

Modified Files: TODO config.sexp Log Message: Export bdb performance tweaks; lots more documentation; new ops for libberkeley-db

--- /project/elephant/cvsroot/elephant/TODO 2007/04/19 22:25:50 1.80 +++ /project/elephant/cvsroot/elephant/TODO 2007/04/25 02:27:56 1.81 @@ -28,7 +28,6 @@ - More notes about transaction performance - Serious discussion of threading implications - Add notes about with/ensure-transaction usage (abort & commit behavior on exit) - - Add notes about optimize-storage - Add notes about deadlock-detect - Add notes about checkpoint (null in SQL?)

--- /project/elephant/cvsroot/elephant/config.sexp 2007/04/19 05:51:33 1.10 +++ /project/elephant/cvsroot/elephant/config.sexp 2007/04/25 02:27:56 1.11 @@ -4,6 +4,7 @@ (:berkeley-db-lib . "/opt/local/lib/db45/libdb-4.5.dylib") (:berkeley-db-deadlock . "/opt/local/bin/db45_deadlock") (:pthread-lib . nil) + (:berkeley-db-cachesize . 20971520) (:clsql-lib . nil) (:compiler . :gcc))

@@ -46,4 +47,21 @@ ;; :compiler options are ;; :gcc (default: for unix platforms with /usr/bin/gcc) ;; :cygwin (for windows platforms with cygwin/gcc) -;; :msvc (unsupported) \ No newline at end of file +;; :msvc (unsupported) +;; +;; Additional supported parameters include: +;; +;; +;; :berkeley-db-cachesize - an integer indicating the number of bytes +;; for the page cache, default 10MB which is +;; about enough storage for 10k-30k indexed +;; persistent objects +;; +;; :map-using-degree2 - Boolean parameter that indicates whether map +;; operations lock down the btree for the entire +;; transaction or whether they allow other +;; transactions to add/delete/modify values +;; before the map operation is completed. The +;; map operation remains stable and any writes +;; are kept transactional, see user manual as +;; well as berkeley DB docs for more details