RFR - 8142872: Remove support for sun.nio.ch.PollSelectorProvider from 9

[Kenji Kazumura]

The result with EventPortSelectorProvider is almost same as
with PollSelectorProvider. This result is good for me.

Let me make sure that the provider which will be removed form JDK 9 is
only PollSelectorProvider but not EventPortSelectorProvider.
Is it right ?

 -Kenji Kazumura



In message <20160324.203604.397507988.kzr at jp.fujitsu.com>
   Re: RFR - 8142872: Remove support for sun.nio.ch.PollSelectorProvider from 9
   Kenji Kazumura <kzr at jp.fujitsu.com> wrote:

> Hi,
> 
> I will try to use EventPortSelectorProvider and
> see if the performance is changed.
> 
> -Kenji Kazumura
> 
> 
> 
> In message <56F3CD6F.2080701 at oracle.com>
>    Re: RFR - 8142872: Remove support for sun.nio.ch.PollSelectorProvider from 9
>    Alan Bateman <Alan.Bateman at oracle.com> wrote:
> 
>> On 24/03/2016 07:46, Kenji Kazumura wrote:
>>> Alan,
>>>
>>> I did not use sun.nio.ch.EventPortSelectorProvider
>>> but use sun.nio.ch.PollSelectorImpl.
>>>
>>> -Kenji Kazumura
>>>
>> It would be good to get an understanding of what the performance issue
>> is. I recall we had issues with the /dev/poll driver where there was
>> contention on a mutex in the Solaris kernel. This was one of the
>> motives for EventPortSelectorProvider. Given that /dev/poll is legacy
>> now then I think we should be looking to have
>> EventPortSelectorProvider be the default on Solaris now.
>> 
>> -Alan
>>