Forgot to say: Thanks for the program. On Thu, Mar 25, 2010 at 7:24 PM, stephane eranian <eran...@googlemail.com> wrote: > On Thu, Mar 25, 2010 at 7:20 PM, Vince Weaver <vweav...@eecs.utk.edu> wrote: >> On Thu, 25 Mar 2010, stephane eranian wrote: >> >>> vince, >>> >>> Could you make your program such it has only 1 billion instructions? >>> I want to see if there is some correlation with counter overflows. >>> They are actually only 31 bit on Intel. >> >> sure, I've attached the 1 billion instruction version. >> >> I'm also working on a few memory microbenchmarks too to see if I can maybe >> find any patterns in the retired_stores cases. >> > I strongly believe this is related to interrupts. That's the only explanation > for the fluctuations. Furthermore, it's not the PMU interrupts, > because those, I assume, > are constant for this test program. >
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