Re: [dpdk-dev] [PATCH] test: fix hang on FreeBSD

[Radu Nicolau <radu.nicolau@intel.com>]

On 5/21/2018 2:28 PM, Burakov, Anatoly wrote:
> On 21-May-18 12:35 PM, Radu Nicolau wrote:
>> Fixes: af75078fece3 ("first public release")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
>> ---
>>   test/test/test_debug.c | 3 ++-
>>   1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/test/test/test_debug.c b/test/test/test_debug.c
>> index faf2cf5..56fadce 100644
>> --- a/test/test/test_debug.c
>> +++ b/test/test/test_debug.c
>> @@ -34,7 +34,8 @@ test_panic(void)
>>           printf("Fork Failed\n");
>>           return -1;
>>       }
>> -    wait(&status);
>> +    sleep(1);
>> +    waitpid(pid, &status, WNOHANG);
>>       if(status == 0){
>>           printf("Child process terminated normally!\n");
>>           return -1;
>>
>
> I'd be curious to see which specific problem you are addressing as 
> well. FreeBSD hanging on abort is a known issue, and a workaround is 
> already available:
>
> http://dpdk.org/dev/patchwork/patch/40256/
>
> FreeBSD doesn't really "hang" here, it just spends a 
> looooooooooooooong time doing the core dump because FreeBSD, unlike 
> Linux, doesn't ignore hugepage and zero-page anonymous memory for core 
> dumps, resulting in it trying to dump the entire 128 gigabytes of VA 
> space that we preallocate.
>
> Setting resource limits will address the immediate issue, a more 
> complete fix (some memory subsystem refactor) will be coming for 18.08.
>

So it seems my "fix" only hides the issue and doesn't actually fix 
anything - so I will remove it from patchwork