RE: Ideal hardware configuration for pgsql
От | Steve Ackerman |
---|---|
Тема | RE: Ideal hardware configuration for pgsql |
Дата | |
Msg-id | 006601c0d46f$0b62b310$4b01a8c0@raptor обсуждение исходный текст |
Ответ на | Re: Ideal hardware configuration for pgsql ("Steve Wolfe" <steve@iboats.com>) |
Список | pgsql-general |
A note about SCSI vs IDE... I have recently tried both on a dual P3 with 1gb of ram running Mandrake 7.2. I was amazed the idle CPU's were running near 20-23% with nothing other then a bash shell running on 2 IBM IDE ATA 100 drives. I converted to 2 IBM SCSI U2 drives and the idle CPU's went down to 0-2%. This was a tremendous difference. I feel SCSI is a must. I would like to try one of those new Promise Supertrak ATA 100 RAID 5 cards or hear from someone who has tried one... Anyone? I read they have the same onboard CPU as the Adaptec ultra160 RAID 5 card and can have up to twice as much onboard cache (128mb) as the SCSI counterpart. It is true hardware level raid 5 with a hot spare and each of the up to 6 drives is on its own interface. I would think this would alleviate the onboard IDE / CPU burn and improve the IDE performance tremendously. The cost of the Promise Supertrak is over $100 more than the Adaptec ultra 160 card, but the ATA 100 drives are very inexpensive compared to SCSI. I found that you could get more than 4x the space for 25% less money with IDE ATA 100 RAID 5. If this is true... IDE RAID 5 might be a good alternative to SCSI. As for the Intel vs Sparc, well I use both. The Intel's are great when you need Windows but when you need performance the Intel just can't keep up with the stability, raw power or speed of Solaris 8 on a Sun machine. As for the cost, we use HP dual 700 CPU x86 Netservers which cost about $30,000ea and with the Sun Developer program we saved 40% on our Sun machines which put the Sun E220 dual CPU in the same ballpark only it will run circles around the HP and I think anyone who develops with Java can become a Sun Developer. Steve Ackerman _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
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