Please help new hard drive install

NoOp glgxg at sbcglobal.net
Wed Dec 17 22:13:14 GMT 2008


On 12/17/2008 01:42 PM, Brian McKee wrote:
> On Wed, Dec 17, 2008 at 11:27 AM, Knapp <magick.crow at gmail.com> wrote:
>>> you can test this yourself with hdparm
>> So what should I make of that??
> 
> The second drive is faster :-)   The buffered figure is more real
> world than the cached one.  The new drive is somewhat faster.   On a
> home box, I bet you don't notice the difference.  Unless you enjoy
> that sort of thing, just set it up the way that's convenient and makes
> sense, and don't worry much about which way might be faster.  Make a
> swap partition on the new drive and mount it as well as the old one as
> the previous poster suggested.
> 
> Brian
> 

I wonder... I get different readings on different partitions and file
type even though the hard drives are identical. They are jumper
configured for primary and slave:

/dev/sda:
 Timing cached reads:   1034 MB in  2.00 seconds = 516.60 MB/sec
 Timing buffered disk reads:   84 MB in  3.06 seconds =  27.49 MB/sec

/dev/sdb:
 Timing cached reads:   1062 MB in  2.00 seconds = 530.69 MB/sec
 Timing buffered disk reads:  144 MB in  3.02 seconds =  47.69 MB/sec

sdb is a Windows drive. I find that if you do the same with each
partition on the same hard drive you will get different readings as well.

/dev/sda1:
 Timing cached reads:   1044 MB in  2.00 seconds = 522.09 MB/sec
 Timing buffered disk reads:   84 MB in  3.05 seconds =  27.50 MB/sec

/dev/sda5:
 Timing cached reads:   1014 MB in  2.00 seconds = 506.46 MB/sec
 Timing buffered disk reads:   58 MB in  3.08 seconds =  18.84 MB/sec

/dev/sdb1:
 Timing cached reads:   1070 MB in  2.00 seconds = 534.98 MB/sec
 Timing buffered disk reads:  156 MB in  3.01 seconds =  51.85 MB/sec

/dev/sdb2:
 Timing cached reads:   1050 MB in  2.00 seconds = 524.59 MB/sec
 Timing buffered disk reads:   96 MB in  3.02 seconds =  31.82 MB/sec





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