Re: [Valgrind-users] Warnings with cachegrind tool

[Nicholas N. <nj...@cs...>]

On Thu, 12 Oct 2006, Josef Weidendorfer wrote:

> According to table 3.17 of the "Intel 64 and IA-32 Architectures
> Software Developer=FF=FFs Manual, Volume 2A, Revision 21":
> (see http://www.intel.com/design/pentium4/manuals/index_new.htm)
>
>> ......
>> --11725-- warning: Unknown Intel cache config value (0xB1), ignoring
>
> Not specified (?).
> However, B0 talks about instruction TLB, which is uninteresting for
> Cachegrind.
>
>> --11725-- warning: Unknown Intel cache config value (0x5), ignoring
>
> Data TLB1: 4 MByte pages, 4-way set associative, 32 entries
> Uninteresting for Cachegrind.
>
>> --11725-- warning: Unknown Intel cache config value (0xF0), ignoring
>
> 64-Byte prefetching.
> Hmm... No idea about that.
>
>> --11725-- warning: Unknown Intel cache config value (0x57), ignoring
>
> Data TLB0: 4 KByte pages, 4-way associative, 16 entries
> Uninteresting for Cachegrind.
>
>> --11725-- warning: Unknown Intel cache config value (0x56), ignoring
>
> Data TLB0: 4 MByte pages, 4-way set associative, 16 entries
> Uninteresting for Cachegrind.
>
>> --11725-- warning: Unknown Intel cache config value (0x49), ignoring
>
> 2nd-level cache: 4 MByte, 16-way set associative, 64 byte line size
> Important for Cachegrind: L2 cache size of 4 MB.
>
>> --11725-- warning: Unknown Intel cache config value (0xB4), ignoring
>
> Data TLB1: 4 KByte pages, 4-way associative, 256 entries
> Uninteresting for Cachegrind.
>
>> --11725-- warning: L2 cache not installed, ignore L2 results.
>
> Wow. I did not known that Cachegrind produces such warnings.
> However, in this case we have a L2 cache with 4MB (see above).

Can you create a patch to fix this?  (Is the CPUID code identical in=20
Callgrind compared to Cachegrind?)  That would be really helpful!

Nick