Re: OProfile-1.2.0-rc1

On 06/20/2017 08:09 AM, Michael Petlan wrote:
> Hi William,
> 
> I have tested this tarball on a Knights Landing and everything looks good,
> except that the testsuite still does not contain my KNL patch I guess.

Hi Michael,

Thanks for testing.

Sorry about the missing Intel KNL oprofile-tests patch.  This should be in the upstream oprofile-tests now.

> 
> However, even when I applied the patch to the testsuite, I got:
> "Native configuration is x86_64-unknown-linux-gnu"
> Is it somehow connected to the testsuite or is that related to the build?
> It looks like the events I specified in the testsuite patch for KNL were
> used in the test, so I expect it works.

The "Native configuration is x86_64-unknown-linux-gnu" output appears to be coming from runtest rather than oprofile testing itself.  I am also seeing it in the systemtap testsuite output. It looks to be harmless.

> 
> I also ran selected Red Hat tests against it.
> 
> Cheers,
> Michael
> 
> On Mon, 19 Jun 2017, William Cohen wrote:
>> There have been a number of improvements checked into the OProfile git repo.  It would be good to have those into an official release.  I have made a release candidate and it would be good to test this out on various platforms.
>>
>> URL:
>> https://sourceforge.net/projects/oprofile/files/oprofile/oprofile-1.2.0rc1/oprofile-1.2.0rc1.tar.gz/download
>>
>> RELEASE NOTES:
>>
>> New features
>> ------------
>>
>> - New/updated Processor Support
>>     * ARM Cortex A17
>>     * IBM Power 9
>>     * IBM Power 8NV and NVL variants
>>     * IBM z13
>>     * Intel Goldmont
>>     * Intel Kabylake
>>     * Intel Xeon Phi (Knights Landing)
>>     * Achitecture specific events for Applied Micro X-Gene
>>
>> Bug fixes
>> ---------
>>
>> Filed bug reports:
>> -------------------------------------------------------------------------
>> |  BUG ID   |  Summary 
>> |-----------|------------------------------------------------------------
>> |  286      | Compilation error: left shift of negative value
>> |  288      | oprofile fails to build with --enable-pch and gcc-6.2 
>> -------------------------------------------------------------------------
>>
>> Other bug fixes and improvements without a filed report (e.g., posted to the lis
>> t):
>> ---------------
>>    - Fixed compile warning and errors when using GCC 6 or GCC 7
>>    - Avoid using deprecated readdir_r function
>>    - Store samples in the archive and search the appropriate places
>>      for samples
>>    - Only start the application if the perf events setup was successful
>>
>>
>> Known problems and limitations
>> -------------------------
>>
>> - When using operf to profile multiple events, the absolute number of
>>   events recorded may be substantially fewer than expected. This can
>>   be due to known bug in the Linux kernel's Performance Events
>>   Subsystem that was fixed sometime between Linux kernel version 3.1
>>   and 3.5.
>>
>> - Monitoring processes that frequently create and destroy threads via
>>   the "--pid" option can be problematic.  The pipes used within operf
>>   and ocount may fill up can cause these programs to hang and require
>>   multiple cntl-C to exit rather than successfully collecting data on
>>   fast spawning processes and children.
>>
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>>


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