* google-perftools: version 0.90 release
* (As the version-number jump hints, this is a major new release:
almost every piece of functionality was rewritten. I can't do
justice to all the changes, but will concentrate on highlights.)
*** USER-VISIBLE CHANGES:
* Ability to "release" unused memory added to tcmalloc
* Exposed more tweaking knobs via environment variables (see docs)
* pprof tries harder to map addresses to functions
* tcmalloc_minimal compiles and runs on FreeBSD 6.0 and Solaris 10
*** INTERNAL CHANGES:
* Much better 64-bit support
* Better multiple-processor support (e.g. multicore contention tweaks)
* Support for recent kernel ABI changes (e.g. new arg to mremap)
* Addition of spinlocks to tcmalloc to reduce contention cost
* Speed up tcmalloc by using __thread on systems that support TLS
* Total redesign of heap-checker to improve liveness checking
* More portable stack-frame analysis -- no more hard-coded constants!
* Disentangled heap-profiler code and heap-checker code
* Several new unittests to test, e.g., thread-contention costs
* Lots of small (but important!) bug fixes: e.g., fixing GetPC on amd64
*** KNOWN PROBLEMS:
* CPU-profiling may crash on x86_64 (64-bit) systems. See the README
* Profiling/heap-checking may deadlock on x86_64 systems. See README
git-svn-id: http://gperftools.googlecode.com/svn/trunk@28 6b5cf1ce-ec42-a296-1ba9-69fdba395a50
* google-perftools: version 0.2 release
* Use mmap2() instead of mmap(), to map more memory (menage)
* Do correct pthread-local checking in heap-checker! (maxim)
* Avoid overflow on 64-bit machines in pprof (sanjay)
* Add a few more GetPC() functions, including for AMD (csilvers)
* Better method for overriding pthread functions (menage)
* (Hacky) fix to avoid overwriting profile files after fork() (csilvers)
* Crashing bugfix involving dumping heaps on small-stack threads (tudor)
* Allow library versions with letters at the end (csilvers)
* Config fixes for systems that don't define PATH_MAX (csilvers)
* Confix fixes so we no longer need config.h after install (csilvers)
* Fix to pprof to correctly read very big cpu profiles (csilvers)
* Fix to pprof to deal with new commandline flags in modern gv's
* Better error reporting when we can't access /proc/maps (etune)
* Get rid of the libc-preallocate code (which could crash on some
systems); no longer needed with local-threads fix (csilvers)
git-svn-id: http://gperftools.googlecode.com/svn/trunk@11 6b5cf1ce-ec42-a296-1ba9-69fdba395a50
* google-perftools: initial release:
The google-perftools package contains some utilities to improve
and analyze the performance of C++ programs. This includes an
optimized thread-caching malloc() and cpu and heap profiling
utilities.
git-svn-id: http://gperftools.googlecode.com/svn/trunk@9 6b5cf1ce-ec42-a296-1ba9-69fdba395a50
