Thu Aug 5 12:48:03 PDT 2010

	* google-perftools: version 1.6 release
	* Add tc_malloc_usable_size for compatibility with glibc (csilvers)
	* Override malloc_usable_size with tc_malloc_usable_size (csilvers)
	* Default to no automatic heap sampling in tcmalloc (csilvers)
	* Add -DTCMALLOC_LARGE_PAGES, a possibly faster tcmalloc (rus)
	* Make some functions extern "C" to avoid false ODR warnings (jyasskin)
	* pprof: Add SVG-based output (rsc)
	* pprof: Extend pprof --tools to allow per-tool configs (csilvers)
	* pprof: Improve support of 64-bit and big-endian profiles (csilvers)
	* pprof: Add interactive callgrind suport (weidenri...)
	* pprof: Improve address->function mapping a bit (dpeng)
	* Better detection of when we're running under valgrind (csilvers)
	* Better CPU-speed detection under valgrind (saito)
	* Use, and recommend, -fno-builtin-malloc when compiling (csilvers)
	* Avoid false-sharing of memory between caches (bmaurer)
	* BUGFIX: Fix heap sampling to use correct alloc size (bmauer)
	* BUGFIX: Avoid gcc 4.0.x bug by making hook-clearing atomic (csilvers)
	* BUGFIX: Avoid gcc 4.5.x optimization bug (csilvers)
	* BUGFIX: Work around deps-determining bug in libtool 1.5.26 (csilvers)
	* BUGFIX: Fixed test to use HAVE_PTHREAD, not HAVE_PTHREADS (csilvers)
	* BUGFIX: Fix tls callback behavior on windows when using wpo (wtc)
	* BUGFIX: properly align allocation sizes on Windows (antonm)
	* BUGFIX: Fix prototypes for tcmalloc/debugalloc wrt throw() (csilvers)
	* DOC: Updated heap-checker doc to match reality better (fischman)
	* DOC: Document ProfilerFlush, ProfilerStartWithOptions (csilvers)
	* DOC: Update docs for heap-profiler functions (csilvers)
	* DOC: Clean up documentation around tcmalloc.slack_bytes (fikes)
	* DOC: Renamed README.windows to README_windows.txt (csilvers)
	* DOC: Update the NEWS file to be non-empty (csilvers)
	* PORTING: Fix windows addr2line and nm with proper rc code (csilvers)
	* PORTING: Add CycleClock and atomicops support for arm 5 (sanek)
	* PORTING: Improve PC finding on cygwin and redhat 7 (csilvers)
	* PORTING: speed up function-patching under windows (csilvers)


git-svn-id: http://gperftools.googlecode.com/svn/trunk@97 6b5cf1ce-ec42-a296-1ba9-69fdba395a50

1 files changed, 28 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index 064bd4b..b868bf2 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,31 @@
+=== 5 August 2010 ===
+
+I've just released perftools 1.6
+
+This version also has a large number of minor changes, including
+support for `malloc_usable_size()` as a glibc-compatible alias to
+`malloc_size()`, the addition of SVG-based output to `pprof`, and
+experimental support for tcmalloc large pages, which may speed up
+tcmalloc at the cost of greater memory use.  To use tcmalloc large
+pages, see the
+[http://google-perftools.googlecode.com/svn/tags/perftools-1.5/INSTALL
+INSTALL file]; for all changes, see the
+[http://google-perftools.googlecode.com/svn/tags/perftools-1.5/ChangeLog
+ChangeLog].
+
+OS X NOTE: improvements in the profiler unittest have turned up an OS
+X issue: in multithreaded programs, it seems that OS X often delivers
+the profiling signal (from sigitimer()) to the main thread, even when
+it's sleeping, rather than spawned threads that are doing actual work.
+If anyone knows details of how OS X handles SIGPROF events (from
+setitimer) in threaded programs, and has insight into this problem,
+please send mail to google-perftools@googlegroups.com.
+
+To see if you're affected by this, look for profiling time that pprof
+attributes to ___semwait_signal.  This is work being done in other
+threads, that is being attributed to sleeping-time in the main thread.
+
+
 === 20 January 2010 ===
 
 I've just released perftools 1.5