RFR(integration blocker): 8191373: Multiple NUMA nodes expected

[Gustavo Romero]

Hi Robbin,

On 17-11-2017 15:30, Gustavo Romero wrote:
> Hi Volker, Robbin,
> 
> @Robbin Could you please tell me against which repo/commit id you created that
> diff? It's after consolidation (hs or master repo), right? Just asking because:
> 
> gromero at gromero16:~/hg/jdk10/hs/src/hotspot$ fgrep -i SafepointMechanism -RIn
> gromero at gromero16:~/hg/jdk10/hs/src/hotspot$ hg id
> d85284ccd1bd tip
> gromero at gromero16:~/hg/jdk10/hs/src/hotspot$ hg path
> default = http://hg.openjdk.java.net/jdk10/hs/
> gromero at gromero16:~/hg/jdk10/hs/src/hotspot$ cd ~/hg/jdk10/master/src/hotspot/
> gromero at gromero16:~/hg/jdk10/master/src/hotspot$ fgrep -i SafepointMechanism -RIn
> gromero at gromero16:~/hg/jdk10/master/src/hotspot$ hg id
> be620a591379 tip
> gromero at gromero16:~/hg/jdk10/master/src/hotspot$ hg path
> default = http://hg.openjdk.java.net/jdk10/master/
> 
> But maybe I'm missing something obvious...

I think that this change depends upon:
http://cr.openjdk.java.net/~rehn/8185640/v0/PollingPage-1/webrev/open.patch

which is not pushed yet, right?

Thanks and best regards,
Gustavo

> 
> Thanks!
> 
> Regards,
> Gustavo
> 
> On 17-11-2017 12:21, Volker Simonis wrote:
>> Hi Gustavo,
>>
>> as our "PowerPC NUMA expert", do you see any problem with this change?
>>
>> Thank yo uand best regards,
>> Volker
>>
>>
>> On Fri, Nov 17, 2017 at 3:10 PM, Robbin Ehn <robbin.ehn at oracle.com> wrote:
>>> Hi all, please review.
>>>
>>> Windows needs to run os::init_2 before allocation polling page to proper
>>> setup numa. I saw no reason not to have it for all platforms after init_2.
>>>
>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8191373
>>>
>>> Code below.
>>>
>>> Tested tier 1-5/1-3
>>>
>>> Thanks, Robbin
>>>
>>> diff -r b4d2929683b6 src/hotspot/share/runtime/thread.cpp
>>> --- a/src/hotspot/share/runtime/thread.cpp      Fri Nov 17 02:50:51 2017
>>> +0100
>>> +++ b/src/hotspot/share/runtime/thread.cpp      Fri Nov 17 13:30:28 2017
>>> +0100
>>> @@ -3560,10 +3560,10 @@
>>>    TraceTime timer("Create VM", TRACETIME_LOG(Info, startuptime));
>>>
>>> -  SafepointMechanism::initialize();
>>> -
>>>    // Initialize the os module after parsing the args
>>>    jint os_init_2_result = os::init_2();
>>>    if (os_init_2_result != JNI_OK) return os_init_2_result;
>>>
>>> +  SafepointMechanism::initialize();
>>> +
>>>    jint adjust_after_os_result = Arguments::adjust_after_os();
>>>    if (adjust_after_os_result != JNI_OK) return adjust_after_os_result;
>>
>