it can go faster than this, cant it?

jerome187 · Guru Joined: 29 Apr 2003 Posts: 584

I just setup hdparm with these options -X66 -d1 -u1 -m16 -c3 and i get a big performance boots, up to 558 MB/s buffer-cache and 29 MB/s buffered disk. but cant it go faster? its a Maxator 120GB 7200RPM Ultra ATA/133

any suggestions for other hdparm flags? i tryed -X34 and the system locked up.

paranode · l33t Joined: 06 Mar 2003 Posts: 679 Location: Texas

You should be able to get a little better from the buffered disk reads. What mode does hdparm -i tell you it's in?
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Meh.

() · l33t Joined: 25 Nov 2002 Posts: 610

Have you tried -c1? -c3 incurs overhead apparently. Btw, my Maxtor DiamondMax Plus 9 SATA 120GB gets these numbers:
Timing buffer-cache reads: 1816 MB in 2.00 seconds = 907.09 MB/sec
Timing buffered disk reads: 154 MB in 3.03 seconds = 50.79 MB/sec

My settings are -X66 -d1 -c1 -u1 -a64.

jerome187 · Guru Joined: 29 Apr 2003 Posts: 584

hdparm -i says i'm using udma2, but it can go upto udma6
theres also a line "AdvancedPM=yes: disabled (255) " dunno what that means.

pilla · Posted: Tue Jul 15, 2003 9:19 pm Post subject:

You can try -X69 (UDMA 5)
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jerome187 · Guru Joined: 29 Apr 2003 Posts: 584

cool, -c1 and -X69 boosted it to 610/43

any to enable UDMA6?

paranode · l33t Joined: 06 Mar 2003 Posts: 679 Location: Texas

-X 70 or -X udma6 should do the trick.
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Meh.

jerome187 · Guru Joined: 29 Apr 2003 Posts: 584

-X70 did it, upped buffer reads a little 612/43

is this normal?

/dev/hdb gets 614/56
/dev/hdb3 gets 608/52 (my fat32 sotrage partion)
/dev/hdb5 gets 612/43 (my / partion)

i ran the tests 4 times for each one and these were the averages

() · l33t Joined: 25 Nov 2002 Posts: 610

I got a Maxtor too, but -X69 isnt permitted :\ Perhaps its down to the immature Silicon Image SATA driver.

jerome187 · Guru Joined: 29 Apr 2003 Posts: 584

900MB/s is still pretty damm good

() · l33t Joined: 25 Nov 2002 Posts: 610

Yeah well : )

xming · Guru Joined: 02 Jul 2002 Posts: 441

jerome187 · Guru Joined: 29 Apr 2003 Posts: 584

damm i wish i knew that before, i woudda but winblows on the end of the drive

paul138 · Guru Joined: 09 Aug 2002 Posts: 370 Location: Ottawa, ON

How's this? (using your settings)

jerome187 · Guru Joined: 29 Apr 2003 Posts: 584

nice!

what drive are you using?

paul138 · Guru Joined: 09 Aug 2002 Posts: 370 Location: Ottawa, ON

Just some Maxtor 6E040L0 on an AOpen AX4R Plus. Not too shabby ;-)

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jerome187 · Guru Joined: 29 Apr 2003 Posts: 584

hmm.. i wonder whats allowing you get get such fast speeds, must be the mobo

Ulukay · Tux's lil' helper Joined: 08 Oct 2002 Posts: 143

huh

i thought "why i got so crappy 320mb/s cached"
then i emerged the new hdparm

/dev/root:
Timing buffer-cache reads: 1404 MB in 2.00 seconds = 702.00 MB/sec
Timing buffered disk reads: 266 MB in 3.01 seconds = 88.37 MB/sec

using no optimation since /dev/root is a hpt374 raid0

taskara · Posted: Wed Jul 23, 2003 4:43 am Post subject:

does the new hdparm support raid arrays ?

I remember b4 it would only support /dev/hdx directly

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