[PVFS-users] IOD unaligned access to XXXXXXXX

[Martin Margo]

Nathan,

how do you locate the problem and fix it?

Martin
On Feb 12, 2004, at 1:01 PM, Nathan Poznick wrote:

> Thus spake Martin Margo:
>> Hi, I am running pvfs 1.6.0 on my 128 nodes cluster. The cluster is a
>> dual procesor IA-64 linux running SuSE sles8 , with SP3 and running
>> kernel 2.4.21
>>
>> I have been seeing these kind of errors in my syslog
>> =============
>> Feb 11 05:41:09 tg-c134 kernel: iod(261): unaligned access to
>> 0x60000fffffffbc5c, ip=0xe0000000044b7990
>> Feb 11 05:41:12 tg-c136 kernel: iod(261): unaligned access to
>> 0x60000fffffffbc5c, ip=0xe0000000044b7880
>>
>> =============
>>
>> does anyone know what does it mean and how to fix it? Is it serious or
>> just a warning? Thanks in advance
>
> There will be a slight performance hit due to the kernel having to
> translate the unaligned access into an aligned one to send to the
> processor, but it shouldn't hurt anything.  If the unaligned accesses
> can be found, they can be fixed - but it's not absolutely necessary.
>
>
> -- 
> Nathan Poznick <poznick at conwaycorp.net>
>
> This above all: to thine own self be true, And it must follow, as the
> night the day, Thou canst not then be false to any man. - William
> Shakespeare
>
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