Re: BUG #2406: Not all systems support SHM_SHARE_MMU

Поиск
Список
Период
Сортировка
От Tom Lane
Тема Re: BUG #2406: Not all systems support SHM_SHARE_MMU
Дата
Msg-id 23029.1145990081@sss.pgh.pa.us
обсуждение исходный текст
Ответ на BUG #2406: Not all systems support SHM_SHARE_MMU  ("Paul van der Zwan" <paul.vanderzwan@sun.com>)
Ответы Re: BUG #2406: Not all systems support SHM_SHARE_MMU  (Paul van der Zwan <Paul.Vanderzwan@Sun.COM>)
Список pgsql-bugs
Paul van der Zwan <Paul.Vanderzwan@Sun.COM> writes:
> On 25-apr-2006, at 16:46, Tom Lane wrote:
>> AFAICS, SHM_SHARE_MMU has no
>> guaranteed semantic effect anyway, it's just a performance hint; so
>> ignoring it on platforms that can't handle it is reasonable.
>>
> I disagree, I have no definite info  why it is a hard failure,
> probably because
> there is no way to communicate to the app that it's request is
> ignored.

Which applications do you think will do anything except exactly what you
are proposing we do, ie, just redo the call without the flag bit?  Why
are you going to make every application jump through this hoop in order
to cope with a (possibly temporary) inadequacy in some seldom-used
versions of Solaris?

We'll probably put in the kluge because we have no other choice, but
I strongly disagree that it's our problem.

            regards, tom lane

В списке pgsql-bugs по дате отправления:

Предыдущее
От: "Hans Guijt"
Дата:
Сообщение: Re: BUG #2305: "No bufferspace available" error on large insert
Следующее
От: Marinos Yannikos
Дата:
Сообщение: pg_dump 8.1.2 with 7.4.2 server screws up with LATIN1 strings