[Bro] Memory leak output
liburdi.joshua at gmail.com
Mon Feb 2 13:25:32 PST 2015
That's odd, I am using the configuration referenced on the Finding
Memory Leaks page: ./configure --enable-debug --enable-perftools
I tried your configuration as well and receive the same results
(gperftools reports memory leaks but can't find thread stacks,
valgrind finds no memory leaks whatsoever). There must be something
wrong with one of my installations.
On Mon, Feb 2, 2015 at 12:41 PM, Siwek, Jon <jsiwek at illinois.edu> wrote:
>> On Feb 2, 2015, at 2:07 PM, Josh Liburdi <liburdi.joshua at gmail.com> wrote:
>> I also ran all packages (standard 2.3.2, 2.3.2 with my analyzer, and
>> git/master) through valgrind and that found zero leaks in all runs. Do
>> you have an opinion on which tool (perftools or valgrind) is more
>> "accurate" with regard to reporting leaks? I'm not sure why perftools
>> is not finding thread stacks (unless they simply don't exist and the
>> reported leaks are false positives) ...
> How did you configure/build Bro? My leak check configuration is
> ./configure --enable-debug --enable-perftools-debug
> Regarding accuracy, I haven’t noticed much difference between valgrind and gperftools. Sometimes I prefer valgrind just to also check for other memory errors (e.g. invalid read/write, using uninitialized). AddressSanitizer is also a nice tool.
> However, unless you’re using a suppression file, valgrind should be reporting a lot of “leaks” in Bro’s initialization routines that aren’t really concerning. With gperftools, Bro has been instrumented to only check for leaks in the main I/O loop, so leaks it reports are usually always concerning.
> - Jon
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