Re: Cost of XLogInsert CRC calculations

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От Manfred Koizar
Тема Re: Cost of XLogInsert CRC calculations
Дата
Msg-id 3vik81tiferogv0k3in75oq7k0178obhnj@email.aon.at
обсуждение исходный текст
Ответ на Re: Cost of XLogInsert CRC calculations  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Cost of XLogInsert CRC calculations
Список pgsql-hackers
On Mon, 16 May 2005 12:35:35 -0400, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>Anyone want to try it with non-gcc compilers?

MS VC++ 6.0 with various predefined optimizer settings
                               2x32        64
Default (without any /O)     0.828125   0.906250
MinSize (contains /O1)       0.468750   0.593750
MaxSpeed (contains /O2)      0.312500   0.640625

Not that it really matters -- but at least this looks like another hint
that letting the compiler emulate 64 bit operations on non 64 bit
hardware is suboptimal.

ServusManfred


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