Re: How to improve db performance with $7K?

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От	Jim C. Nasby
Тема	Re: How to improve db performance with $7K?
Дата	7 апреля 2005 г. 02:41:40
Msg-id	20050406224102.GM93835@decibel.org обсуждение исходный текст
Ответ на	Re: How to improve db performance with $7K? (Alex Turner)
Ответы	Re: How to improve db performance with $7K? (Alex Turner)
Список	pgsql-performance

Дерево обсуждения

How to improve db performance with $7K? (Steve Poe, 26 марта 2005 г., 03:24:19 )
Re: How to improve db performance with $7K? (Tom Lane, 26 марта 2005 г., 03:59:24 )
Re: How to improve db performance with $7K? (Steve Poe, 26 марта 2005 г., 04:32:05 )
Re: How to improve db performance with $7K? (Will LaShell, 26 марта 2005 г., 04:03:25 )
Re: How to improve db performance with $7K? ("Joshua D. Drake", 26 марта 2005 г., 04:13:53 )
Re: How to improve db performance with $7K? (Steve Poe, 26 марта 2005 г., 11:25:14 )
Re: How to improve db performance with $7K? (Bjoern Metzdorf, 26 марта 2005 г., 12:59:43 )
Re: How to improve db performance with $7K? (Josh Berkus, 26 марта 2005 г., 23:56:47 )
Re: How to improve db performance with $7K? (Steve Poe, 27 марта 2005 г., 00:16:48 )
Re: How to improve db performance with $7K? (Cott Lang, 29 марта 2005 г., 02:43:39 )
Re: How to improve db performance with $7K? (Steve Poe, 29 марта 2005 г., 08:31:47 )
Re: How to improve db performance with $7K? (Cott Lang, 29 марта 2005 г., 18:53:04 )
Follow-Up: How to improve db performance with $7K? (Steve Poe, 01 апреля 2005 г., 06:01:17 )
Re: Follow-Up: How to improve db performance with $7K? (Thomas F.O'Connell, 01 апреля 2005 г., 12:10:12 )
Re: Follow-Up: How to improve db performance with $7K? (Kevin Brown, 06 апреля 2005 г., 08:45:14 )
Re: Follow-Up: How to improve db performance with $7K? ("Steinar H. Gunderson", 06 апреля 2005 г., 15:28:22 )
Re: Follow-Up: How to improve db performance with $7K? (Thomas F.O'Connell, 07 апреля 2005 г., 08:40:43 )
Re: Follow-Up: How to improve db performance with $7K? (Vivek Khera, 02 апреля 2005 г., 01:23:44 )
Re: Follow-Up: How to improve db performance with $7K? (Will LaShell, 02 апреля 2005 г., 20:21:50 )
Re: How to improve db performance with $7K? (Steve Poe, 27 марта 2005 г., 00:31:21 )
Re: Follow-Up: How to improve db performance with $7K? (PFC, 06 апреля 2005 г., 17:26:36 )
Re: Follow-Up: How to improve db performance with $7K? ("Steinar H. Gunderson", 06 апреля 2005 г., 17:33:56 )
Re: How to improve db performance with $7K? (PFC, 29 марта 2005 г., 13:50:06 )
Re: How to improve db performance with $7K? (Dave Cramer, 29 марта 2005 г., 16:17:13 )
Re: How to improve db performance with $7K? (Greg Stark, 29 марта 2005 г., 22:11:23 )
Re: How to improve db performance with $7K? (Alex Turner, 04 апреля 2005 г., 17:44:08 )
Re: How to improve db performance with $7K? (Steve Poe, 04 апреля 2005 г., 19:52:07 )
Re: How to improve db performance with $7K? (Alex Turner, 04 апреля 2005 г., 23:13:59 )
Re: How to improve db performance with $7K? (Vivek Khera, 04 апреля 2005 г., 23:25:22 )
Re: How to improve db performance with $7K? (Alex Turner, 04 апреля 2005 г., 23:33:40 )
Re: How to improve db performance with $7K? (William Yu, 06 апреля 2005 г., 11:30:57 )
Re: How to improve db performance with $7K? (Alex Turner, 06 апреля 2005 г., 19:35:18 )
Re: How to improve db performance with $7K? (William Yu, 07 апреля 2005 г., 00:01:52 )
Re: How to improve db performance with $7K? (Alex Turner, 07 апреля 2005 г., 02:12:22 )
Re: How to improve db performance with $7K? ("Jim C. Nasby", 07 апреля 2005 г., 02:41:40 )
Re: How to improve db performance with $7K? (Alex Turner, 07 апреля 2005 г., 04:32:54 )
Re: How to improve db performance with $7K? (Alex Turner, 07 апреля 2005 г., 05:12:25 )
Re: How to improve db performance with $7K? (Alex Turner, 07 апреля 2005 г., 05:24:01 )
Re: How to improve db performance with $7K? (Greg Stark, 07 апреля 2005 г., 07:01:24 )
Re: How to improve db performance with $7K? (Alex Turner, 07 апреля 2005 г., 07:06:58 )
Re: How to improve db performance with $7K? (Tom Lane, 07 апреля 2005 г., 08:15:32 )
Re: How to improve db performance with $7K? (Kevin Brown, 14 апреля 2005 г., 05:57:10 )
Re: How to improve db performance with $7K? (Greg Stark, 14 апреля 2005 г., 06:37:39 )
Re: How to improve db performance with $7K? (Kevin Brown, 14 апреля 2005 г., 08:36:15 )
Re: How to improve db performance with $7K? (Tom Lane, 14 апреля 2005 г., 14:44:20 )
Re: How to improve db performance with $7K? (Kevin Brown, 15 апреля 2005 г., 02:03:51 )
Re: How to improve db performance with $7K? (Alex Turner, 15 апреля 2005 г., 02:24:39 )
Re: How to improve db performance with $7K? (PFC, 15 апреля 2005 г., 10:14:04 )
Re: How to improve db performance with $7K? (Tom Lane, 15 апреля 2005 г., 02:42:19 )
Re: How to improve db performance with $7K? (Kevin Brown, 15 апреля 2005 г., 05:03:52 )
Re: How to improve db performance with $7K? (Tom Lane, 15 апреля 2005 г., 05:29:08 )
Re: How to improve db performance with $7K? (Kevin Brown, 16 апреля 2005 г., 00:53:55 )
Re: How to improve db performance with $7K? (Greg Stark, 15 апреля 2005 г., 18:01:52 )
Re: How to improve db performance with $7K? (Vivek Khera, 15 апреля 2005 г., 15:43:46 )
Re: How to improve db performance with $7K? ("Joshua D. Drake", 15 апреля 2005 г., 15:58:34 )
Re: How to improve db performance with $7K? (Vivek Khera, 15 апреля 2005 г., 16:10:20 )
Re: How to improve db performance with $7K? (Kevin Brown, 16 апреля 2005 г., 00:58:35 )
Re: How to improve db performance with $7K? (Matthew Nuzum, 19 апреля 2005 г., 01:44:30 )
Re: How to improve db performance with $7K? ("Jim C. Nasby", 19 апреля 2005 г., 23:08:46 )
Re: How to improve db performance with $7K? (Rosser Schwarz, 14 апреля 2005 г., 14:48:56 )
Re: How to improve db performance with $7K? (Kevin Brown, 16 апреля 2005 г., 01:33:40 )
Re: How to improve db performance with $7K? (Greg Stark, 14 апреля 2005 г., 18:03:50 )
Re: How to improve db performance with $7K? (Bruce Momjian, 18 апреля 2005 г., 20:58:44 )
Re: How to improve db performance with $7K? (Alex Turner, 18 апреля 2005 г., 22:49:56 )
Re: How to improve db performance with $7K? (Alvaro Herrera, 18 апреля 2005 г., 22:56:36 )
Re: How to improve db performance with $7K? (Bruce Momjian, 19 апреля 2005 г., 01:51:38 )
Re: How to improve db performance with $7K? ("Douglas J. Trainor", 07 апреля 2005 г., 08:59:21 )
Re: How to improve db performance with $7K? (, 07 апреля 2005 г., 19:38:44 )
Re: How to improve db performance with $7K? (Alex Turner, 07 апреля 2005 г., 19:46:41 )
Re: How to improve db performance with $7K? (, 07 апреля 2005 г., 20:30:10 )
Re: How to improve db performance with $7K? ("Douglas J. Trainor", 07 апреля 2005 г., 13:56:09 )
Re: How to improve db performance with $7K? (PFC, 15 апреля 2005 г., 10:07:51 )
Re: How to improve db performance with $7K? (Alan Stange, 15 апреля 2005 г., 13:12:02 )
Re: How to improve db performance with $7K? (Dave Cramer, 03 апреля 2005 г., 06:52:14 )
Re: How to improve db performance with $7K? ("Alexander Kirpa", 27 марта 2005 г., 19:23:10 )
Re: How to improve db performance with $7K? ("Mohan, Ross", 14 апреля 2005 г., 15:02:49 )
Re: How to improve db performance with $7K? ("Matthew Nuzum", 14 апреля 2005 г., 15:55:52 )
Re: How to improve db performance with $7K? (Greg Stark, 14 апреля 2005 г., 17:55:27 )
Re: How to improve db performance with $7K? (PFC, 14 апреля 2005 г., 18:42:40 )
Re: How to improve db performance with $7K? (Tom Lane, 14 апреля 2005 г., 18:22:21 )
Re: How to improve db performance with $7K? ("Dave Held", 14 апреля 2005 г., 18:21:20 )
Re: How to improve db performance with $7K? ("Mohan, Ross", 14 апреля 2005 г., 18:32:02 )
Re: How to improve db performance with $7K? (Steve Poe, 14 апреля 2005 г., 18:45:12 )
Re: How to improve db performance with $7K? ("Joshua D. Drake", 14 апреля 2005 г., 19:17:14 )
Re: How to improve db performance with $7K? (William Yu, 18 апреля 2005 г., 08:18:09 )
Re: How to improve db performance with $7K? (Greg Stark, 18 апреля 2005 г., 15:00:52 )
Re: How to improve db performance with $7K? (Alex Turner, 18 апреля 2005 г., 15:17:31 )
Re: How to improve db performance with $7K? (Greg Stark, 18 апреля 2005 г., 15:44:10 )
Re: How to improve db performance with $7K? (Alex Turner, 18 апреля 2005 г., 16:56:55 )
Re: How to improve db performance with $7K? (Jacques Caron, 18 апреля 2005 г., 17:32:38 )
Re: How to improve db performance with $7K? (Alex Turner, 18 апреля 2005 г., 18:16:26 )
Re: How to improve db performance with $7K? (Alex Turner, 18 апреля 2005 г., 18:21:08 )
Re: How to improve db performance with $7K? (Jacques Caron, 18 апреля 2005 г., 18:51:53 )
Re: How to improve db performance with $7K? (Alex Turner, 18 апреля 2005 г., 19:30:07 )
Re: How to improve db performance with $7K? (Jacques Caron, 18 апреля 2005 г., 18:28:41 )
Re: How to improve db performance with $7K? (Greg Stark, 18 апреля 2005 г., 18:24:44 )
Re: How to improve db performance with $7K? (Alan Stange, 18 апреля 2005 г., 17:34:58 )
Re: How to improve db performance with $7K? (John A Meinel, 18 апреля 2005 г., 17:36:22 )
Re: How to improve db performance with $7K? (Alex Turner, 18 апреля 2005 г., 18:18:29 )
Re: How to improve db performance with $7K? ("Joshua D. Drake", 18 апреля 2005 г., 18:28:41 )
Re: How to improve db performance with $7K? (Alex Turner, 18 апреля 2005 г., 18:50:58 )
Re: How to improve db performance with $7K? (Steve Poe, 18 апреля 2005 г., 17:46:52 )
Re: How to improve db performance with $7K? (Alex Turner, 18 апреля 2005 г., 18:19:39 )
Re: How to improve db performance with $7K? (Jacques Caron, 18 апреля 2005 г., 17:42:51 )
Re: How to improve db performance with $7K? ("Jim C. Nasby", 20 апреля 2005 г., 00:03:40 )
Re: How to improve db performance with $7K? (William Yu, 18 апреля 2005 г., 20:37:58 )
Re: How to improve db performance with $7K? ("Dave Held", 14 апреля 2005 г., 18:46:23 )
Re: How to improve db performance with $7K? ("Mohan, Ross", 15 апреля 2005 г., 18:27:24 )
Re: How to improve db performance with $7K? ("Dave Held", 18 апреля 2005 г., 15:20:49 )
Re: How to improve db performance with $7K? ("Jim C. Nasby", 20 апреля 2005 г., 00:05:37 )
Re: How to improve db performance with $7K? ("Mohan, Ross", 18 апреля 2005 г., 18:42:23 )
Re: How to improve db performance with $7K? ("Jim C. Nasby", 20 апреля 2005 г., 00:12:25 )
Re: How to improve db performance with $7K? (Alex Turner, 20 апреля 2005 г., 17:40:41 )
Re: How to improve db performance with $7K? ("Dave Held", 19 апреля 2005 г., 13:34:24 )
Re: How to improve db performance with $7K? (Alex Turner, 20 апреля 2005 г., 18:52:02 )
Re: How to improve db performance with $7K? (William Yu, 21 апреля 2005 г., 05:02:58 )
Re: How to improve db performance with $7K? ("Mohan, Ross", 19 апреля 2005 г., 14:35:46 )
Re: How to improve db performance with $7K? (Bruce Momjian, 19 апреля 2005 г., 16:10:34 )
Re: How to improve db performance with $7K? (, 19 апреля 2005 г., 16:23:17 )
Re: How to improve db performance with $7K? ("Jim C. Nasby", 20 апреля 2005 г., 00:15:31 )
What to do with 6 disks? (Jeff Frost, 20 апреля 2005 г., 01:00:53 )
Re: What to do with 6 disks? ("Jim C. Nasby", 20 апреля 2005 г., 01:56:07 )
Re: What to do with 6 disks? (Josh Berkus, 20 апреля 2005 г., 03:02:32 )
Re: Opteron vs Xeon (Was: What to do with 6 disks?) (Jeff Frost, 20 апреля 2005 г., 04:40:42 )
Re: Opteron vs Xeon (Was: What to do with 6 disks?) ("J. Andrew Rogers", 20 апреля 2005 г., 06:03:21 )
Re: Opteron vs Xeon (Was: What to do with 6 disks?) (Jeff Frost, 20 апреля 2005 г., 06:21:39 )
Re: Opteron vs Xeon (Was: What to do with 6 disks?) (William Yu, 20 апреля 2005 г., 15:09:58 )
Re: Opteron vs Xeon (Was: What to do with 6 disks?) (Vivek Khera, 20 апреля 2005 г., 15:38:11 )
Re: What to do with 6 disks? (Vivek Khera, 20 апреля 2005 г., 15:36:34 )
Re: What to do with 6 disks? (William Yu, 20 апреля 2005 г., 03:07:00 )
Re: How to improve db performance with $7K? ("Mohan, Ross", 19 апреля 2005 г., 16:13:25 )
Re: How to improve db performance with $7K? (Bruce Momjian, 19 апреля 2005 г., 16:16:14 )
Re: How to improve db performance with $7K? (Dawid Kuroczko, 20 апреля 2005 г., 08:55:49 )
Re: How to improve db performance with $7K? ("Mohan, Ross", 19 апреля 2005 г., 16:26:06 )
Re: How to improve db performance with $7K? ("Mohan, Ross", 20 апреля 2005 г., 16:18:52 )
Re: How to improve db performance with $7K? ("Mohan, Ross", 20 апреля 2005 г., 16:44:32 )
Re: How to improve db performance with $7K? ("Dave Held", 20 апреля 2005 г., 18:49:17 )
Re: How to improve db performance with $7K? ("Mohan, Ross", 20 апреля 2005 г., 19:02:15 )

Sorry if I'm pointing out the obvious here, but it seems worth
mentioning. AFAIK all 3ware controllers are setup so that each SATA
drive gets it's own SATA bus. My understanding is that by and large,
SATA still suffers from a general inability to have multiple outstanding
commands on the bus at once, unlike SCSI. Therefore, to get good
performance out of SATA you need to have a seperate bus for each drive.
Theoretically, it shouldn't really matter that it's SATA over ATA, other
than I certainly wouldn't want to try and cram 8 ATA cables into a
machine...

Incidentally, when we were investigating storage options at a previous
job we talked to someone who deals with RS/6000 storage. He had a bunch
of info about their serial controller protocol (which I can't think of
the name of) vs SCSI. SCSI had a lot more overhead, so you could end up
saturating even a 160MB SCSI bus with only 2 or 3 drives.

People are finally realizing how important bandwidth has become in
modern machines. Memory bandwidth is why RS/6000 was (and maybe still
is) cleaning Sun's clock, and it's why the Opteron blows Itaniums out of
the water. Likewise it's why SCSI is so much better than IDE (unless you
just give each drive it's own dedicated bandwidth).
--
Jim C. Nasby, Database Consultant               
Give your computer some brain candy! www.distributed.net Team #1828

Windows: "Where do you want to go today?"
Linux: "Where do you want to go tomorrow?"
FreeBSD: "Are you guys coming, or what?"

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