diff options
| -rw-r--r-- | NEWS | 61 | ||||
| -rw-r--r-- | README | 2 | ||||
| -rw-r--r-- | build_posix/aclocal/version-set.m4 | 2 | ||||
| -rw-r--r-- | src/docs/top/main.dox | 6 |
4 files changed, 66 insertions, 5 deletions
@@ -1,3 +1,64 @@ +WiredTiger release 1.6.6, 2013-11-19 +------------------------------------ + +The WiredTiger 1.6.6 release is a bugfix and performance tuning release. + +This release of WiredTiger contains a database format change. Database files +from previous releases will need to be upgraded. + +A special note: the WiredTiger code base is now being regularly reviewed +using the Coverity Static Analysis Verification Engine. We'd like to +thank Coverity for their on-going support of Open Source projects like +WiredTiger! + +Significant changes include: + +* Performance changes include: limiting operations done inside update + serialization primitives, removing unnecessary memory barriers, replacing + spinlocks with atomic instructions, padding structures to avoid false + cache sharing, switching from per-file mutexes to per-page mutexes, + pre-allocating structures to avoid memory allocation while holding + mutexes, and using adaptive mutexes where available. + [#707, #718, #719] + +* A number of LSM stability and performance improvements: changes include + better merge algorithms, reduced locking, and higher concurrency. + +* A number of table compaction performance improvements, including changes + allowing compaction to no longer read unnecessary file blocks into the + cache, requires fewer passes over the file and support concurrent + checkpoints and eviction. This change required an underlying file + format change, see the upgrading documentation for details. + [#756, #761] + +* WiredTiger statistics have been significantly improved: + + Statistics logging has been changed to aggregate information from all + open handles. [#709, #717] + + For performance reasons, statistics are now disabled by default, see + the upgrading documentation for details. [#715] + + Statistics configuration has been changed so the connection and cursor + configuration are consistent, with matching changes to the "wt stat" + command-line utility; see the upgrading documentation for details. + +* Update WT_EVENT_HANDLER interface to contain a new "handle close" + interface and to pass a WT_SESSION handle into all callbacks, see the + upgrading documentation for details. [#649] + + Add timestamp, process ID and thread ID to messages generated via + WT_EVENT_HANDLER interface. [#753] + +* WiredTiger eviction improvements, supporting larger data-to-cache size + ratios. [#754] + +* Various fixes for handling overflow records. [#726, #743] + +* Overflow records are no longer tracked during bulk-loads, significantly + increasing bulk-load performance for some data sets. + + WiredTiger release 1.6.5, 2013-10-09 ------------------------------------ @@ -1,4 +1,4 @@ -WiredTiger 1.6.6: (October 9, 2013) +WiredTiger 1.6.6: (November 19, 2013) This is version 1.6.6 of WiredTiger. diff --git a/build_posix/aclocal/version-set.m4 b/build_posix/aclocal/version-set.m4 index 2e4e05c5bc4..b32a67878bd 100644 --- a/build_posix/aclocal/version-set.m4 +++ b/build_posix/aclocal/version-set.m4 @@ -3,7 +3,7 @@ dnl build by dist/s_version VERSION_MAJOR=1 VERSION_MINOR=6 VERSION_PATCH=6 -VERSION_STRING='"WiredTiger 1.6.6: (October 9, 2013)"' +VERSION_STRING='"WiredTiger 1.6.6: (November 19, 2013)"' AC_SUBST(VERSION_MAJOR) AC_SUBST(VERSION_MINOR) diff --git a/src/docs/top/main.dox b/src/docs/top/main.dox index 3c6590150f0..63877c9e9c6 100644 --- a/src/docs/top/main.dox +++ b/src/docs/top/main.dox @@ -6,9 +6,9 @@ WiredTiger is an high performance, scalable, production quality, NoSQL, @section releases Releases <table> -@row{<b>WiredTiger 1.6.5</b> (current), - <a href="releases/wiredtiger-1.6.5.tar.bz2"><b>[Release package]</b></a>, - <a href="1.6.5/index.html"><b>[Documentation]</b></a>} +@row{<b>WiredTiger 1.6.6</b> (current), + <a href="releases/wiredtiger-1.6.6.tar.bz2"><b>[Release package]</b></a>, + <a href="1.6.6/index.html"><b>[Documentation]</b></a>} @row{<b>WiredTiger 1.5.3</b> (previous), <a href="releases/wiredtiger-1.5.3.tar.bz2"><b>[Release package]</b></a>, <a href="1.5.3/index.html"><b>[Documentation]</b></a>} |