1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
Tue Feb 8 09:57:17 2005 Google Inc. <opensource@google.com>
* 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.
Tue May 31 08:14:38 2005 Google Inc. <opensource@google.com>
* 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)
Fri Jun 24 18:02:26 2005 Google Inc. <opensource@google.com>
* google-perftools: version 0.3 release
* Add missing errno include for one of the unittests (csilvers)
* Reduce tcmalloc startup memory from 5M to 256K (sanjay)
* Add support for mallopt() and mallinfo (sanjay)
* Improve stacktrace's performance on some 64-bit systems (etune)
* Improve the stacktrace unittest (etune)
Wed Oct 26 15:19:16 2005 Google Inc. <opensource@google.com>
* google-perftools: version 0.4 release
* Decrease fragmentation in tcmalloc (lefevere)
* Support for ARM in some of the thread-specific code (markus)
* Turn off heap-checker for statically-linked binaries, which
cause error leak reports now (etune)
* Many pprof improvements, including a command-line interface (jeff)
* CPU profiling now automatically affects all threads in linux 2.6.
(Kernel bugs break CPU profiling and threads in linux 2.4 a bit.)
ProfilerEnable() and ProfilerDisable() are deprecated. (sanjay)
* tcmalloc now correctly intercepts memalign (m3b, maxim)
* Syntax fix: added missing va_end()s. Helps non-gcc compiling (etune)
* Fixed a few coredumper bugs: race condition after PTRACE_DETACH,
ignore non-aligned stackframe pointers (markus, menage)
* 64-bit cleanup, especially for spinlock code (etune) and mmap (sanjay)
* Better support for finding threads in linux (markus)
* tcmalloc now tracks those stack traces that allocate memory (sanjay)
* Work around a weird setspecific problem (sanjay)
* Fix tcmalloc overflow problems when an alloc is close to 2G/4G (sanjay)
Mon Nov 14 17:28:59 2005 Google Inc. <opensource@google.com>
* google-perftools: version 0.5 release
* Add va_start/va_end calls around vsnprintf() (csilvers)
* Write our own __syscall_return(), since it's not defined
consistently on all 64-bit linux distros (markus)
Fri Jan 27 14:04:27 2006 Google Inc. <opensource@google.com>
* google-perftools: version 0.6 release
* More sophisticated stacktrace usage, possibly using libunwind (aruns)
* Update pprof to handle 64-bit profiles (dehnert)
* Fix GetStackTrace to correctly return top stackframe (sanjay)
* Add ANSI compliance for new and new[], including new_handler (jkearney)
* More accuracy by reading ELF files directly rather than objdump (mec)
* Add readline support for pprof (addi)
* Add #includes for PPC (csilvers)
* New PC-detection routine for ibook powerpc (asbestoshead)
* Vastly improved tcmalloc unittest (csilvers)
* Move documentation from /usr/doc to /usr/share/doc
Thu Apr 13 20:59:09 2006 Google Inc. <opensource@google.com>
* google-perftools: version 0.7 release
* Major rewrite of thread introspection for new kernels (markus)
* Major rewrite of heap-checker to use new thread tools (maxim)
* Add proper support for following data in thread registers (maxim)
* Syscall support for older kernels, including _syscall6 (markus)
* Support PIC mode (markus, mbland, iant)
* Better support for running in non-threaded contexts (csilvers)
Wed Jun 14 15:11:14 2006 Google Inc. <opensource@google.com>
* google-perftools: version 0.8 release
* Experimental support for remote profiling added to pprof (many)
* Fixed race condition in ProfileData::FlushTable (etune)
* Better support for weird /proc maps (maxim, mec)
* Fix heap-checker interaction with gdb (markus)
* Better 64-bit support in pprof (aruns)
* Reduce scavenging cost in tcmalloc by capping NumMoveSize (sanjay)
* Cast syscall(SYS_mmap); works on more 64-bit systems now (menage)
* Document the text output of pprof! (csilvers)
* Better compiler support for no-THREADS and for old compilers (csilvers)
* Make libunwind the default stack unwinder for x86-64 (aruns)
* Somehow the COPYING file got erased. Regenerate it (csilvers)
Fri Apr 13 14:50:51 2007 Google Inc. <opensource@google.com>
* 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
|
