Re: PATA sometimes faster than SATA?
- From: Mike Tomlinson <mike@xxxxxxxxxxxxx>
- Date: Fri, 28 Mar 2008 21:10:53 +0000
In article <852d3089-e9e4-414e-8fc7-b9f13f8faa64@xxxxxxxxxxxxxxxxxxxxxxx
..com>, A. J. Moss <ajmoss_throwaway_account_001@xxxxxxxxxxxxx> writes
I haven't yet checked to see if the IDE interfaces are connected
straight to the chipset and the SATA ones to the PCI bus, but if
this is the case, could it follow that the SATA solution (which
would use up about half the PCI bandwidth in sustained transfer
of large files) could actually be slower than the IDE one?
Yes.
On a similar note, one of my older computers has an Abit NF7-S v2
motherboard (socket A) and a Silicon Image two-port IDE RAID PCI
card,
I have one too, a SiI 3112 PCI card, with two 500GB PATA drives attached
using SATA-PATA converters. Capacity was more important than speed to
me here. That said, I've been quite surprised by how well it performs
in benchmarks.
To optimise the throughput, the drive order is set to PM-SM-PS-SS,
instead of the default PM-PS-SM-SS.
Just get a very fast disk for your boot/OS drive. This is what I did -
I got a WD Raptor, and boot from that. It's attached to one of the SATA
ports on the Southbridge of my chipset (K8T800 Pro), so is not
constrained by the PCI bus. It reduced boot time by 50% over the Seagate
7200.7 PATA it replaced.
Would it also be beneficial
to set the stripe size to 512KB, rather than the default 128KB?
It depends on the size of the files you store. If you store lots of
small files (128KB or smaller), no. If they are large video files, for
example, you _should_ benefit from a larger stripe size.
Experimentation and benchmarking are important.
--
(\__/) Bunny says NO to Windows Vista!
(='.'=) http://www.cs.auckland.ac.nz/~pgut001/pubs/vista_cost.html
(")_(") http://www.cypherpunks.to/~peter/vista.pdf
.
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