Re: [bug/regression] libhugetlbfs testsuite failures and OOMs eventually kill my system

[Mike Kravetz]

On 10/13/2016 08:24 AM, Mike Kravetz wrote:
> On 10/13/2016 05:19 AM, Jan Stancek wrote:
>> Hi,
>>
>> I'm running into ENOMEM failures with libhugetlbfs testsuite [1] on
>> a power8 lpar system running 4.8 or latest git [2]. Repeated runs of
>> this suite trigger multiple OOMs, that eventually kill entire system,
>> it usually takes 3-5 runs:
>>
>>  * Total System Memory......:  18024 MB
>>  * Shared Mem Max Mapping...:    320 MB
>>  * System Huge Page Size....:     16 MB
>>  * Available Huge Pages.....:     20
>>  * Total size of Huge Pages.:    320 MB
>>  * Remaining System Memory..:  17704 MB
>>  * Huge Page User Group.....:  hugepages (1001)
>>

Hi Jan,

Any chance you can get the contents of /sys/kernel/mm/hugepages
before and after the first run of libhugetlbfs testsuite on Power?
Perhaps a script like:

cd /sys/kernel/mm/hugepages
for f in hugepages-*/*; do
	n=`cat $f`;
	echo -e "$n\t$f";
done

Just want to make sure the numbers look as they should.

-- 
Mike Kravetz