Re: [HACKERS] Priorities for 6.6
| От | Vadim Mikheev |
|---|---|
| Тема | Re: [HACKERS] Priorities for 6.6 |
| Дата | |
| Msg-id | 375A6814.9A9BDA23@krs.ru обсуждение исходный текст |
| Ответ на | Re: [HACKERS] Priorities for 6.6 (Bruce Momjian <maillist@candle.pha.pa.us>) |
| Ответы |
Re: [HACKERS] Priorities for 6.6
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| Список | pgsql-hackers |
Bruce Momjian wrote: > > > In short, if you load a bunch of tuples into a table, the first select > > after the load can run a lot slower than you might expect, because it'll > > be writing back most or all of the pages it touches. But that penalty > > doesn't affect every select, only the first one to scan a newly-written > > tuple. > > I have removed this from the TODO list: > > * Prevent fsync in SELECT-only queries When selecting (i.e. - read-only) transaction commits, it change pg_log - we obviously can avoid this! No sense to store commit/abort status of read-only xactions! Vadim
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