Re: SCSI driver for 53c1000 controller

["Rafael Ruiz" <gandano@gmail.com>]

Thanks.
It is enough information for me.
I thought that SCSI Utra160 could handle a bit more than 68. My UP1100
with ATA66 IDE controller give me 39 MB/s, and it is old IDE
interface.
The problem of RAID into CS20 is space. ummmm.... 68 MB/s is good for me.

Thanks.
Rafa

2006/5/26, Bob McElrath <bob+debian-alpha@mcelrath.org>:
> Marc Schlensog [fishtank@web.de] wrote:
> > On Thu, 25 May 2006 17:43:13 +0200
> > "Rafael Ruiz" <gandano@gmail.com> wrote:
> >
> > > Hi all!
> > >
> > > I have a CS20 computer with 53C1000 scsi controller. I have installed
> > > linux kernel-2.4.32, but i only get 68MB/s with my Utra160 scsi disk.
> > > 53C1000 chip support 160MB/s. Which kernel config option enable this
> > > feature? Do i need a external driver?
> >
> > The bottleneck isn't your controller but your disk. If you need more
> > throughput, get more disks.
>
> 68 MB/s is quite a lot.  I'm not sure what top-of-the-line SCSI disks
> can do, but it can't be much more than 68 MB/s.
>
> My CS20 is gets 63 MB/s with its Ultra160 drive.
>
> 160 MB/s is the theoretical maximum that the BUS can handle.  In
> practice the disks themselves can't shove data out that fast.  If you
> need more throughput than that you need a RAID array.
>
> --
> Cheers,
> Bob McElrath [Univ. of California at Davis, Department of Physics]
>
>     "It is almost universally felt that when we call a country
>     democratic we are praising it; consequently, the defenders of every
>     kind of regime claim that it is a democracy, and fear that they
>     might have to stop using the word if it were tied down to any one
>     meaning." -- George Orwell
>
>
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