Stephen Montgomery-Smith wrote:
Thomas Wolf wrote:
ST380013AS with Intel ICH5 SATA150 controller and FreeBSD 4.10-Stable. The kernel reports that it is running at UDMA33, but the actual performance seems much better than that.Stephen Montgomery-Smith <[EMAIL PROTECTED]> schrieb:
FUJISHIMA Satsuki wrote:
Currently native SATA drives are still not so popular. There are:
Seagate Barracuda ATA V, 7200.7, 7200.8
I have one of these, and I am really impressed by its performance. I added one to my computer, which came with a Maxtor 6Y080L0. My main disk intensive operation is creating the CTM deltas (as in CTM which is an alternative to CVSUP for people behind unfriendly firewalls). The performance difference was somewhat collosal, as in something like 3 times faster. To be honest, I am still at a loss to explain why the Seagate did so very much better - maybe it is the 8M cache as compared to the 2M cache. The Seagate 7200.7 had similar performance to a Seagate 160MHz SCSI drive that I have on another computer.
Ah, please tell me more about it, is this a ST3120827AS?
(I would need the exact PartNo.) What controller dou you have and finally, on which version of FreeBSD?
Hold on right there, the ST380013AS is a Barracuda V 7200.7 device and does not do any form of tagging, neither does the ICH5 support it. You are just enjoying the stock speed of modern (S)ATA gear :)
Oh, and 4.x has no notion of SATA it only works on controllers that can emulate the old ATA way of things. This is means that the ATA33 speed isn't whats used as SATA v1 always runs at 150MB/s, just 4.x has no way of telling.
But the stock speed of modern SATA gear just seems so good. I did a google on both the Seagate driver and Maxtor drives that I had in my computer, and the specs seemed about the same except for the cache size, yet the performance of the Seagate was just so very much better. I am still at a loss to really explain why. (The Maxtor was a ATA133 although the controler only did ATA100.) Can anyone suggest to me why the Seagate was so very much better?
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