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Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 28 |
1 files changed, 28 insertions, 0 deletions
@@ -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 |