Date: Wed, 9 Feb 2011 01:41:46 -0800 From: Jose Amengual <jose.amengual@gmail.com> To: dieterbsd@engineer.com Cc: freebsd-hardware@freebsd.org Subject: Re: Addonics SIS3124 Controller and T Message-ID: <9B050F94-41D4-425B-9B06-8D1D85CF9B0E@gmail.com> In-Reply-To: <8CD961AD4EE6A77-1804-38AC@web-mmc-m02.sysops.aol.com> References: <8CD961AD4EE6A77-1804-38AC@web-mmc-m02.sysops.aol.com>
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On 2011-02-08, at 6:47 PM, dieterbsd@engineer.com wrote: > Jose Amengual writes: >> 1.- I can see just only from ada0 to ada6 I don't see any other HDs. >=20 > Are both of the JMB393s configured as individual drives port = multiplier > mode? (as opposed to some hardware raid mode) I assume you've already > checked the cables. Strangely enough just switching drives now I can see all ten, weird but = is working now. I'm confused why you are referring to a JMB393s if my card has a = siis3124 chip....or are you referring o the PMs? >=20 >> 2.- Performance is just 131 MBs per second as report from diskinfo -t >=20 > This is for an individual drive, correct? =20 > How fast do you expect it to > be? This was for an individual drive. I was expecting more but it looks like I was wrong with my assumptions.=20= >=20 > Have you tried connecting individual drives to the 3124 controller > and tested the performance that way? I didn't try this, I will do that. >=20 >> =46rom what you've written, the bottleneck could be the controller, = the > port multiplier, or the drive itself. 131 MB/s sounds about right > for a single drive, unless it is some super high performance drive > or you are reading from the drive's RAM rather than from the platters. > I can get 253 MB/s reading from a drive's RAM. Useful for seeing what > controllers, port multipliers and such can do without the limits of > the platter density. (the platter density goes up as new generations > of drives come out) I'd be interested in knowing what the 3124 > controller and the JMB393 PM can do. >=20 >=20 > _______________________________________________ > freebsd-hardware@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hardware > To unsubscribe, send any mail to = "freebsd-hardware-unsubscribe@freebsd.org"
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