Re: MVCC for massively parallel inserts
От | Joshua D. Drake |
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Тема | Re: MVCC for massively parallel inserts |
Дата | |
Msg-id | 3FFA45F6.2020107@commandprompt.com обсуждение исходный текст |
Ответ на | Re: MVCC for massively parallel inserts (Greg Stark <gsstark@mit.edu>) |
Ответы |
Re: MVCC for massively parallel inserts
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Список | pgsql-general |
>>We use a 3Ware 7500 (can't remember the model name for the life of me), with 8 >>drives in a 4x2 RAID 1/0. >> >> > >I would agree and if you really need the I/O bandwidth you can go to much >larger stripe sets than even this. The documentation I've seen before >suggested there were benefits up to stripe sets as large as twelve disks >across. That would be 24 drives if you're also doing mirroring. > > > Something I have been toying with is getting two of the 12 drive 3Ware cards and running RAID 0+1 across them (with LVM). At just under 300 for the cards and only 80 bucks a drive (80 Gig)... that is alot of space, and a lot of speed for not a lot of money. Sincerely, Joshua D >Ideally separating WAL, index, and heap files is good, but you would have to >experiment to see which works out fastest for a given number of drives. > > > -- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC and S/JDBC Postgresql support, programming shared hosting and dedicated hosting. +1-503-667-4564 - jd@commandprompt.com - http://www.commandprompt.com Mammoth PostgreSQL Replicator. Integrated Replication for PostgreSQL
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