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Greg_B_
Beginner
20 Views

sampling-interval knob with locksandwaits

Hi,

The VTune documentation http://software.intel.com/sites/products/documentation/doclib/stdxe/2013/amplifierxe/lin/ug_docs/hh_... lists sampling-interval as one of the knobs that can be used with -collect locksandwaits. However, the following command line:

amplxe-cl -collect locksandwaits -knob sampling-interval=1 -- myapp

produces output:

amplxe: Error: Cannot find knob sampling-interval. Use -knob-list to see available knobs.

I followed the error message advice and used -knob-list=locksandwaits to see available knobs. Only 1 knob was listed, enable-user-tasks.

 

So: The software says sampling-interval is not allowed with locksandwaits, but the documentation says it is allowed. Either there's a bug in the software or there's a bug in the documentation. Which is it?

Thanks,

Greg Bishop

0 Kudos
2 Replies
Peter_W_Intel
Employee
20 Views

The problem can be reproduced on my side. But Concurrency and Hotspots worked.

I have escalated this problem to dev team, I will post update soon.

Peter_W_Intel
Employee
20 Views

Option "sampling-interval" can only be used for hotspots collection and concurrency collection, Not for locksandwaits again in XE 2013 version - I know it worked for locksandwaits in XE 2011 version. The document will be updated in future release.