Ask: how to measure the runtime cache hit rate it?

            


Ask you a question, what method or software to cache hit rate on intel platform program run time?
Please let me know.
Reply:
Sampling parameters manually configure VTune the project, you can select Cache failure rate counter.
Reply:
Re: Dear icansaymyabc
Thank you very much to my cache hit ratio test problem message. Today only get intel vtune, for the first time, I hope the steps you can set up to me about some detail. Comments such as Mongolia, be grateful. ....

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VTune menu has installed a tutorial Getting Started Tutorial
You have to read it to understand.

After creating a project using the Analyzer projects in the Sampling Wizard.
Remember to check the Modify default configuration when done wizard.
Then on the left select the configuration dialog Sampling, and then point in the middle of the Configure button,
They pop up a configuration box, its Event Ratios and Events pages have very many types of counters to choose from.

Event Ratios returns ratio. Events back to the original count.

Look Cache,
selected in Event Ratios Memory Event Ratios category1st level Cache Load Hit Rate
1st level Cache Load Miss Performance Impact

General class also selected2nd-Level Cache Load Hit Rate
2nd-Level Cache Load Misses per Instructions Retired

Events, select All events in class, on the Cache counters are the top surface.

Reply:
In a Linux environment you can use Oprofile tool. Free of Kazakhstan. ^ _ ^
Reply:
How the program is implemented?
No assembly instructions in this regard, right?
Reply:
cache miss generally have two representations, miss rate and miss instruction per thousand times. In L1 Case:

L1 cache miss rate
= 1st-Level cache load miss retired / loads retired
That is the total number of load L1 miss more often than on.

Instruction L1 miss every thousand times
= 1000 * 1st-Level cache load miss retired / Instructions retired.

1st-Level cache load miss retired, loads retired, Instructions retired as an event can be measured out.