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SubjectRe: Mysterious Lag With SATA Maxtor 250GB 7200RPM 16MB Cache Under Linux using NFSv3 UDP
omes wrote:
> I suddenly couldn't send to the mailinglist any longer.. I'm going back to
> 2.4.28 for now. My 4GB of RAM support was already turned off.. Good luck
> further. Here is my mail:
>
> On Monday 17 January 2005 22:34, you wrote:
>
>>omes wrote:
>>
>>>I have the same problem as you. At least our problems are much alike. I
>>>got two Western digital hard disks. One 120GB 7200RPM 2MB Cache IDE, and
>>>one 80GB 7200 2MB Cache IDE. I get high loads when reading large files
>>>for some time, as well as when copying from one partition to another. All
>>>my partitions are in ext3, and i'm running 2.6.10.
>>
>>I have a similar problem. I am running 2.6.9 on FC3 not the stock
>>kernel, but a vanilla kernel.
>>I have 3 NFS shares mounted on this 2.6.9 machine (ASUS P4C800 ICH5
>>motherboard with 1024 MB RAM and sk98lin gigabit LOM (non-functional
>>since thesk98lin driver broke apart) so i use an additional 3Com 3C59x
>>100 Mbps adapter, with a nvidia VGA adapter, but no nvidia modules but
>>only VESAFB at 1024x768.
>
> This is the same series as i got P4C800/P4P800..
>
> Gabriel worte this in an earlier post:
> "The performance issues (below) where due to a strange bug in the kernel
> VM triggered by the motherboard BIOS. This affects Asus P4P800
> motherboards(-MX and -VM tested) with more that 1 GB RAM. The built-in
I have exactly 1GB.

> VGA can use 1-32 MB RAM for display but configured with less than 16 MB
> of video RAM the board will behave EXTREMELY poor in linux (2.6.9 also
> tested to behave like this).
>
I don't have 4GB support, nor do i have shared VGA. I have a nvidia(64M
onboard, not shared) card using vesafb.
No X either.

> There are several ways around this problem, I've just configured the
> board with 16 MB of video RAM. Disabling support for 4 GB of RAM works
> too but more memory is lost this way. Running FreeBSD is also an option
> but we don't like that, don't we ? Memtest86 (1.11) doesn't seems
> affected either - but it detects the memory as "single channel" while
> memory is installed in dual channel configuration (also confirmed by BIOS).
>
> If anybody knows what's going on please let me know. Loosing 15 MB of
> RAM is not a big deal but I like linux bug-free, fast and stable.
>
> I'm available to give more details or run some tests if anyone cares.
>
> Regards,
>
> Gabriel" (adapted)
>
> As for the LOM, use this driver comes with the kernel: Device Drivers ->
> Networking support -> Ethernet (1000 Mbit) -> Marvell Yukon Chipset /
> SysKonnect SK-98xx Support
>
It was broken when i tried it out on 2.6.7 i think, and i stumbled upon
the a post stating about incorrect VPD entries.. So i thought i would
wait for things to cool down a bit.

Manu
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