suspecious ide hdparm results with 2.4.1 (and a minor capacity question)

From: CaT (
Date: Wed Feb 07 2001 - 10:14:47 EST

well I got my ATA100 IBM HD and my Promise ATA100 card to go with it and
shoved them into my ultrafast VX MB (cough). I then ran hdparm
to see how fast the sucker could get and got this:

[02:02:24] root@gozer:/root>> free; hdparm -tT /dev/hde; free
             total used free shared buffers cached
Mem: 94520 91760 2760 0 63272 6780
-/+ buffers/cache: 21708 72812
Swap: 266032 4 266028

 Timing buffer-cache reads: 128 MB in 3.54 seconds = 36.16 MB/sec
 Timing buffered disk reads: 64 MB in 3.13 seconds = 20.45 MB/sec
Hmm.. suspicious results: probably not enough free memory for a proper test.
             total used free shared buffers cached
Mem: 94520 91828 2692 0 63608 6524
-/+ buffers/cache: 21696 72824
Swap: 266032 12 266020

Now... that suspicious results note makes me ponder that the results
aren't for real but... if they are, gawddamn. That's more then I hoped
for. 8)

Also, as an aside question, I want to get as much capacity out of this
HD as possible, back and windows compatability be damned. It's currently
in LBA mode (I believe) and that, to my knowledge, wastes the most space.
Is there anything I can do to get more of my HD back for use?

[02:02:41] root@gozer:/root>> hdparm -i /dev/hde


 Model=IBM-DTLA-307045, FwRev=TX6OA50C, SerialNo=YMDYMT8X423
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=40
 BuffType=3(DualPortCache), BuffSize=1916kB, MaxMultSect=16, MultSect=16
 DblWordIO=no, OldPIO=2, DMA=yes, OldDMA=2
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=90069840
 tDMA={min:120,rec:120}, DMA modes: mword0 mword1 mword2
 IORDY=on/off, tPIO={min:240,w/IORDY:120}, PIO modes: mode3 mode4
 UDMA modes: mode0 mode1 mode2 mode3 mode4 *mode5

CaT (		*** Jenna has joined the channel.
				<cat> speaking of mental giants..
				<Jenna> me, a giant, bullshit
				<Jenna> And i'm not mental
					- An IRC session, 20/12/2000

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