Re: Responsiveness issue(s)
On Wed, Apr 11, 2007 at 01:00:55PM -0400, Andrew J. Barr wrote:
> Jack Malmostoso wrote:
> >On Wed, 11 Apr 2007 16:50:30 +0200, Andrew J. Barr wrote:
> >
> >>I
> >>have a 7200RPM 100GB drive in my Thinkpad that I'd prefer to use in the
> >>PowerBook if it would help speed it up...
> >
> >It sure would. But be prepared to quite an adventure if you want to
> >replace your PB's HD on your own. Unfortunately it's nowhere like the
> >Macbooks, as you have to disassemble all of your laptop.
>
> Well, darn it. I lied.
>
> The Thinkpad disk is a 5400 RPM disk drive (at least I think so, the
> model number starts with HTS54 instead of HTS72...), and the PB's
> 'hdparm -t' (buffered reads) numbers basically match that of the
> Thinkpad (30-32 MB/sec on the PowerBook vs. 34-39 MB/sec on the
> Thinkpad). However, the interesting part is that the 'hdparm -T' (cached
> reads) numbers are different--Thinkpad gets at least 600 MB/sec, usually
> closer to 620 MB/sec, PowerBook gets 400 MB/sec or so. Which number is
> more meaningful? And would swapping disks let me take the 'hdparm -T'
> number to the PB?
The slow one, the faster one is just a measurement of the speed of the memory
cache, which is unless i am wrong the main memory.
Friendly,
Sven Luther
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