Re: SCSI vs SATA
От | Joshua D. Drake |
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Тема | Re: SCSI vs SATA |
Дата | |
Msg-id | 4613C6F1.3090009@commandprompt.com обсуждение исходный текст |
Ответ на | Re: SCSI vs SATA (Stefan Kaltenbrunner <stefan@kaltenbrunner.cc>) |
Ответы |
Re: SCSI vs SATA
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Список | pgsql-performance |
>> SATAII brute forces itself through some of its performance, for >> example 16MB write cache on each drive. > > sure but for any serious usage one either wants to disable that > cache(and rely on tagged command queuing or how that is called in SATAII Why? Assuming we have a BBU, why would you turn off the cache? > world) or rely on the OS/raidcontroller implementing some sort of > FUA/write barrier feature(which linux for example only does in pretty > recent kernels) Sincerely, Joshua D. Drake > > > Stefan > > ---------------------------(end of broadcast)--------------------------- > TIP 6: explain analyze is your friend > -- === The PostgreSQL Company: Command Prompt, Inc. === Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240 Providing the most comprehensive PostgreSQL solutions since 1997 http://www.commandprompt.com/ Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate PostgreSQL Replication: http://www.commandprompt.com/products/
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