Re: IDE disk slow? There's help...

From: Michael Kwasigroch (mkwasigr@intercope.com)
Date: Tue Oct 24 2000 - 02:53:38 EST


Great! Thanks.

Just got 2.4.0-test9, it compiles and runs fine so far...

I also think about buying an add-on PCI ATA100 controller to get all the
goodies of UDMA. Either a Promise U100 or an HPT370 equipped one (but
found none such jet). I tend towards the Promise due to better web
support... any recommendations?

P.S.: I'd be more than happy to test you "superior tools" on my box. It's a
dual P133 "dream machine"... :-)

Mit freundlichen Gruessen / best regards

Michael Kwasigroch
FaxPlus/Open Development
________________________________________

eMail: mkwasigr@intercope.com

INTERCOPE GmbH

                                                                                                                                
                    Andre Hedrick
                    <andre@linux- To: Michael Kwasigroch <mkwasigr@intercope.com>
                    ide.org> cc: linux-kernel@vger.kernel.org, Mark Hahn <hahn@coffee.psychology.mcmaster.ca>
                                         Subject: Re: IDE disk slow? There's help...
                    23.10.00
                    19:32
                                                                                                                                
                                                                                                                                

2.4 is more up to date than 2.2+patch.

On Mon, 23 Oct 2000, Michael Kwasigroch wrote:

> Andre: What about 2.4.x? Will it contain your ide-patch or some subset? I
> hate to ask this but I don't have the time to play with 2.4-pre although
> I'd like to.
>
> If yes, forget about all this, since 2.4 will be here soon and most users
> will sooner or later upgrade to it.
>
> If not: What about starting a poll like collecting 2.2.x (and maybe 2.4.x
> as well) IDE performance data with some shell script (my pleasure to
> provide one)? Anything special you want to see in the data? I think
about:
>
> - /proc/version
> - /proc/cpuinfo
> - /proc/pci/pci
> - /proc/ide/*
> - Output of 'hdparm -Tt' on all IDE drives.

I have superior tools to use, just not published yet.

hdparm below:
 Timing buffered disk reads: 64 MB in 12.25 seconds = 5.22 MB/sec PIO
 Timing buffered disk reads: 64 MB in 12.25 seconds = 5.22 MB/sec PIO
 Timing buffered disk reads: 64 MB in 10.82 seconds = 5.91 MB/sec MLT
 Timing buffered disk reads: 64 MB in 10.84 seconds = 5.90 MB/sec MLT
 Timing buffered disk reads: 64 MB in 2.42 seconds = 26.45 MB/sec DMA
 Timing buffered disk reads: 64 MB in 2.44 seconds = 26.23 MB/sec DMA

Diskperf below:
Device: Maxtor 91536H2 Serial Number: N200PGDD
LBA 0 PIO Read Test = 5.29 MB/Sec (47.26 Seconds)
Outer Diameter Sequential PIO Read Test = 5.26 MB/Sec (47.52 Seconds)
Inner Diameter Sequential PIO Read Test = 5.26 MB/Sec (47.52 Seconds)
Random PIO Read Test = 2.33 MB/Sec (107.46 Seconds)
LBA 1 PIO Write Test = 5.19 MB/Sec (48.14 Seconds)
Outer Diameter Sequential PIO Write Test = 5.18 MB/Sec (48.25 Seconds)
Inner Diameter Sequential PIO Write Test = 5.20 MB/Sec (48.11 Seconds)
Random PIO Write Test = 3.54 MB/Sec (70.55 Seconds)
LBA 0 MLT Read Test = 5.96 MB/Sec (41.94 Seconds)
Outer Diameter Sequential MLT Read Test = 5.97 MB/Sec (41.89 Seconds)
Inner Diameter Sequential MLT Read Test = 5.97 MB/Sec (41.90 Seconds)
Random MLT Read Test = 2.41 MB/Sec (103.75 Seconds)
LBA 1 MLT Write Test = 5.63 MB/Sec (44.42 Seconds)
Outer Diameter Sequential MLT Write Test = 5.93 MB/Sec (42.18 Seconds)
Inner Diameter Sequential MLT Write Test = 5.94 MB/Sec (42.10 Seconds)
Random MLT Write Test = 3.59 MB/Sec (69.70 Seconds)
LBA 0 DMA Read Test = 46.05 MB/Sec (5.43 Seconds)
Outer Diameter Sequential DMA Read Test = 26.52 MB/Sec (9.43 Seconds)
Inner Diameter Sequential DMA Read Test = 14.72 MB/Sec (16.99 Seconds)
Random DMA Read Test = 3.36 MB/Sec (74.46 Seconds)
LBA 1 DMA Write Test = 42.60 MB/Sec (5.87 Seconds)
Outer Diameter Sequential DMA Write Test = 15.32 MB/Sec (16.31 Seconds)
Inner Diameter Sequential DMA Write Test = 13.96 MB/Sec (17.91 Seconds)
Random DMA Write Test = 3.51 MB/Sec (71.20 Seconds)

Andre Hedrick
The Linux ATA/IDE guy

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