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List:       ataraid-list
Subject:    RE: raid 0 pdc20276 and rh 7.2, install ok, but kernel compile2.4.19-pre8 bad performance
From:       "Anton Resnick" <anton () webhosting ! net>
Date:       2002-05-11 16:39:19
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I got 7.2 with a standard 2.4.18 kernel working. I also got 7.3 with ataraid
support working. I didn't even get a change to test, as dropping a drive in
either of the above installes crashed the server. I'm using a Tyan 2505
board with onboard Promise Fasttrack 100 chipset onboard ( PDC20267 ).

Using the drivers from Promise, you are limited to using the 2.4.7-10
kernel..default to 7.2. I contacted Promise, and they pretty much told me
that they work on Redhat versions, and not on kernel versions, so getting a
"precompiled" driver from them for a new kernel ain't going to happen very
soon.

I have a slightly newer version of the ft.o drivers that Promise tech
support sent me, let me know if you want them. Again these drivers are only
for a a default RH 7.2 install..ie. 2.4.7-10 kernel.

Anton

-----Original Message-----
From: ataraid-list-admin@redhat.com [mailto:ataraid-list-admin@redhat.com]On
Behalf Of Paul Barrette
Sent: Saturday, May 11, 2002 11:49 AM
To: ataraid
Subject: raid 0 pdc20276 and rh 7.2, install ok, but kernel
compile2.4.19-pre8 bad performance

Hi,
I installed rh 7.2 with the the ft scsi mod from promise ok, but I
thought I would recompile my kernel and try out the new ataraid support
for my promise chipset, which is allegedly supported.  Hardware:

asus A7V333, 256 DDRRAM, 2xMaxstore ata133 40G
promise PDC 20276/ MBFastTrack133 Lite
nvidia geforce 2mx400

filesystems are all ext3

kernel 2.4.18 patched with patch-2.4.19-pre8

After compiling my kernel with the ataraid params, and rebooting, the
mounting of filesystems takes about 5 minutes to complete.  Furthermore,
performance is not very good.  E.g. dd if=/dev/zero of=big count=3000k
takes more than 3 min.

With the promise supplied ft scsi mod, this same dd test takes about 1
min 17 secs.

Rebooting with my kernel also causes some harddrive seek/read errors.

Has anyone had good results compiling their kernel?

thanks.

Paul

--

Paul Barrette
Specialties: Network Programming, Linux/Unix, Latin, Greek

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0000010: 6520 616e 6765 7220 6f66 2050 656c 6575  e anger of Peleu
0000020: 7327 2073 6f6e 2041 6368 696c 6c65 730a  s' son Achilles.
0000030: 616e 6420 7468 6520 6465 7661 7374 6174  and the devastat
0000040: 696f 6e2c 2077 6869 6368 2070 7574 2070  ion, which put p
0000050: 6169 6e73 2074 686f 7573 616e 6466 6f6c  ains thousandfol
0000060: 6420 7570 6f6e 2074 6865 0a41 6368 6169  d upon the.Achai
0000070: 616e 732e 2e2e 0a                        ans....



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