[plug] Ubuntu woes

[Paul Antoine]

I should have pointed out that the errors being generated by the disks
in this server were due to a *kernel* bug, not the hardware!

P.

Paul Antoine wrote:
> Hi Steve,
>
> Are there any messages being generated in the kernel or syslog's? Are 
> all the disks in a hardware RAID array?
>
> I have been working on an 8TB server for a client and have experienced 
> a similar issue though in my case some of the (brand new!) disks were 
> generating i/o errors.
>
> In any case I'd be happy to help if I can.
>
> Paul
>
> Steve Baker wrote:
>> Hi Plug,
>>
>> I have a weird problem, I'm hoping someone can help.
>>
>> I have a PC with 4GB RAM and a quad core CPU, with Intel 945 graphics 
>> and lots of discs on an Adaptec SATA RAID card.  I also have a Dell 
>> Latitude D820 laptop with 4GB and dual core CPU and nvidia graphics 
>> chipset.
>>
>> Both systems run Ubuntu 8.04.  The laptop is perfectly fine - runs 
>> everything really well, fast, full compiz effects, etc. etc.  The PC 
>> is crap.  It's very very slow to boot, running aptitude safe-upgrade 
>> can take yonks, particularly if there is a kernel update and it has 
>> to run update-initrd.
>> Disk i/o *seems* to be OK; I un-tarred a tgz file approx 300Mb and it 
>> unpacked quite quickly.  Network throughput seems to be normal.  I 
>> haven't run any CPU benchmarks, don't know what would give me any 
>> useful results.
>>
>> When I log in, it can take 30secs or more after accepting the 
>> password before I get the $ prompt.  (This is NOT the well-known ssh 
>> reverse lookup timeout problem).  Sometimes when running a command 
>> (especially with a larger on-disk program size, eg. vi) it takes a 
>> few seconds to load the program, more than I would expect.
>>
>> Those are the main symptoms, if anyone has any clues I can send 
>> relevant config info upon request.
>>
>> Regards,
>> Steve
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