Re: [HACKERS] increasing the default WAL segment size

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От Robert Haas
Тема Re: [HACKERS] increasing the default WAL segment size
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Msg-id CA+Tgmoa25Sd9Ofuo4TiA2Tp+pco4PMTCwGq-LKiGCibKXvEJdA@mail.gmail.com
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Ответ на Re: [HACKERS] increasing the default WAL segment size  (David Steele <david@pgmasters.net>)
Ответы Re: [HACKERS] increasing the default WAL segment size  (David Steele <david@pgmasters.net>)
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On Wed, Mar 22, 2017 at 3:24 PM, David Steele <david@pgmasters.net> wrote:
>> One of the reasons to go with the LSN is that we would actually be
>> maintaining what happens when the WAL files are 16MB in size.
>>
>> David's initial expectation was this for 64MB WAL files:
>>
>> 000000010000000000000040
>> 000000010000000000000080
>> 0000000100000000000000CO
>> 000000010000000100000000
>
>
> This is the 1GB sequence, actually, but idea would be the same for 64MB
> files.

Wait, really?  I thought you abandoned this approach because there's
then no principled way to handle WAL segments of less than the default
size.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company



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