Re: opreport running on archive on a different machine.

[Sherlock H. <she...@gm...>]

Solved the problem.
My apologies - perhaps I had not done enough home work. I am new to
oprofile.
First off, the oprofile-0.9.2 on my embedded system had been patched.
So, I applied those patches on to my host Linux machine oprofile source
files.
Then, I came to know about the opimport utility and with a small shell
script ran it on the archive files and then I was able to obtain
differential profile from opreport.
Thanks Maynard and once again sorry to have bothered you with a naive
question.

Regards.

On Thu, Sep 25, 2008 at 10:42 AM, Sherlock Holmes <she...@gm...
> wrote:

> Thanks a lot Maynard.
> I used your patch and also added a small printf to it to display the
> version number it is reading.
> Yes! there is a version number mismatch. It reads a garbage for the current
> version - (header.version = 268435456 while OPD_Version =16).  But the
> problem seems to be rooted in the archive.
> I could not use tar command on my embedded system to tar the archive as tar
> was failing with a message that the file names in the oprofile archive were
> too long. So, I used the old cpio command which was able to archive the
> result directory. But when I extract in my Pentium based laptop, cpio warned
> me of reversed header in the archive and created the rest of the files( I
> had ignored the warning); the ascii files such as abi seem good but the
> binary ones are probably corrupted. Tried a few byte swapping options with
> cpio but they all fail. cpio compalined about odd number of bytes and
> opreport complained about bad magic number with the extracted files! So, now
> I am in a fix. Need to do more research?
>
> Regards.
>
>
> On Tue, Sep 23, 2008 at 8:39 PM, Maynard Johnson <may...@us...>wrote:
>
>> Sherlock Holmes wrote:
>> > Dear All,
>> > I did the following:
>> > 1. Installed and run oprofile in my PowerPC embedded system.
>> > 2. Used oparchive to archive the results - opr_run1
>> > 3. Optimized code and executed it under oprofile again.
>> > 4. Archived the results as in #2 - opr_run2
>> > 5. When I run opreport -l { archive:./opr_run1 } { archive:./opr_run2 }
>> I
>> > get to see the differential profiling
>> > (as expected).
>> > All the steps above were on the embedded PowerPC e300 system. The
>> version of
>> > oprofile used in 0.9.2 and
>> > I can't change it.
>> >
>> > However when I export the archive to my Linux machine running on i386
>> and
>> > oprofile version 0.9.4,
>> > and then running #5 there, I get the error message: oprofile: could not
>> open
>> > unit mask description file
>> > /usr/local/share/oprofile//invalid cpu type/unit_masks
>> > So, I installed oprofile version 0.9.2 on my Linux machine and tried #5
>> > again. But this gave another error message:
>> > ../var/lib/...bin/bash/CPU_CLK.100000.0.all.all.all : Invalid argument.
>> (I
>> > have omitted some path names here)
>> One possible cause for this error is a mismatch between the version of
>> oprofile used to collect the profile and that which is used to generate the
>> report.  Are you positive that you're using oprofile 0.9.2 in both cases?
>>  Current oprofile detects this and prints a more helpful message.  I've
>> attached a patch that you can apply to your oprofile installation where you
>> are running opreport that incorporates this samplefile version detection
>> code.  Can you try it out and let us know the result.
>>
>> -Maynard
>>
>> > Can someone help me please?
>> > I need to run the analyses offline since I dont get access to the
>> embedded
>> > machine and the disk space
>> > available there is rather small.
>> > I appreciate you help.
>> > Regards.
>> >
>> >
>> >
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