Messages in this thread | | | Date | Tue, 8 Dec 1998 09:35:43 +1000 (AEST) | From | Leonard Zhang System Administrator ISD RVIB <> | Subject | Re: Dumb question: Which is "better" SCSI or IDE disks? |
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Your killfile still does not work :-) :-) :-)
Leonard
On Mon, 7 Dec 1998, Rik van Riel wrote:
> On Mon, 7 Dec 1998, Leonard Zhang System Administrator ISD RVIB wrote: > > On Sun, 6 Dec 1998, Alan Cox wrote: > > > > > > I think currently spinning SCSI hard disks on the world, either in servers > > > > or workstation, either in Unix/Linux or NT, is 50-pin old guys, no DPT disk > > > > > > And as my stats showed for real work even old 5400 rpm fast scsi on a > > > now discontinued adapter (the BT946) beats current UDMA IDE for real world > > > compiles. You "think". I've "measured" > > > > Open server 5.0.4p, DPT RAID-1, 32 MB cache, PCI, 4.2 GB (A cable) > > > > copy 9,177 K in 9 seconds. > > > > Red hat 4.2, 8 GB IDE > > > > copy 9,397 K in 2 seconds. > > > > both run in shell script. > > Sigh... > > You benchmarked two different drives under different OSes on > different machines and try to extend those results to a general > performance difference between SCSI and IDE... > > (sounds rather rediculous when viewed this way, doesn't it) > > This is simply not a proper benchmark for the results you want > to achieve. If you want to prove that IDE gives you more bang > for the buck, you should get a machine and use a SCSI subsystem > and an IDE subsystem which cost about the same amount of money > _in that same machine_ and test _using the same OS_ and the > _same workload_. Furthermore, you should be using a realistic > workload and not one that's been tuned to give the result you > want. > > regards, > > Rik -- the flu hits, the flu hits, the flu hits -- MORE > +-------------------------------------------------------------------+ > | Linux memory management tour guide. H.H.vanRiel@phys.uu.nl | > | Scouting Vries cubscout leader. http://www.phys.uu.nl/~riel/ | > +-------------------------------------------------------------------+ > >
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