From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
To: linux-ia64@vger.kernel.org
Subject: RE: Itanium2@900MHz slower than alpha@666MHz ?
Date: Fri, 24 Oct 2003 20:36:32 +0000 [thread overview]
Message-ID: <marc-linux-ia64-106702782513709@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-106700871121653@msgid-missing>
>> One other neat thing about Itanium architecture is the capability of
>> it's performance counter. It has capability to do cycle accounting
that
>> break-down the number of cycles that are lost due to various kinds of
>> micro-architectural events, it is based on CPU's actual stall cycles
in
>> the pipeline so you can see exactly where the stall is coming from to
>> eliminate any guess work.
>
>Are qprof and pfmon enough to do this ?
Yes.
>> See electron compiler user's guide for PGO methodology:
>>
http://www.intel.com/software/products/compilers/c60l/resources/c_ug_lnx
>> .pdf
>
>Is this the same for 7.x ?
I think so.
- Ken
prev parent reply other threads:[~2003-10-24 20:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-24 15:14 Itanium2@900MHz slower than alpha@666MHz ? Ionut Georgescu
2003-10-24 15:35 ` Matthew Wilcox
2003-10-24 16:26 ` Ionut Georgescu
2003-10-24 16:49 ` Matthew Wilcox
2003-10-24 16:55 ` Grant Grundler
2003-10-24 17:10 ` Stephane Eranian
2003-10-24 17:42 ` Chen, Kenneth W
2003-10-24 18:36 ` David Mosberger
2003-10-24 18:55 ` Ionut Georgescu
2003-10-24 18:59 ` Ionut Georgescu
2003-10-24 20:25 ` Siddha, Suresh B
2003-10-24 20:36 ` Chen, Kenneth W [this message]
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