Re: 8192 BLCKSZ ?
От | Bruce Momjian |
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Тема | Re: 8192 BLCKSZ ? |
Дата | |
Msg-id | 200011280139.UAA28530@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: 8192 BLCKSZ ? ("Mitch Vincent" <mitch@venux.net>) |
Ответы |
Re: 8192 BLCKSZ ?
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Список | pgsql-hackers |
[ Charset ISO-8859-1 unsupported, converting... ] > If it breaks anything in PostgreSQL I sure haven't seen any evidence -- the > box this database is running on gets hit pretty hard and I haven't had a > single ounce of trouble since I went to 7.0.X Larger block sizes mean larger blocks in the cache, therefore fewer blocks per megabyte. The more granular the cache, the better. 8k is the standard Unix file system disk transfer size. Less than that would be overhead of transfering more info that we actually retrieve from the kernel. Larger and the cache is less granular. No transaction issues because we use fsync. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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