Re: Win95 performance counter interface?

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Article #23434

#23434

From: jwes
Date: Wed, 09 Dec 1998 00:00

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On 30 Nov 1998 15:00:06 GMT, mlm@kt.dtu.dk (michael) wrote:

>In article <73ppdc$bif$1@winter.news.rcn.net>, jwes@oro.net says...
>>
>>On 28 Nov 1998 15:49:11 GMT, LKS <lk213@hermes.cam.ac.uk> wrote:
>>
>>>Brandon Van Every wrote:
>>>> 
>>>> Does Win95 have an API interface to SET UP the Pentium II performance
>>>> counters?  i.e. a built-in method to indirectly execute the Ring 0 WRMSR
>>>> instruction?
>>>
>>>you can use the Win32 API
>>>
>>>  QueryPerformanceCounter
>>>  QueryPerformanceFrequency
>>>
>>
>>I suspect he is looking for the other performance counters, such as
>>cache misses, etc. If there is not one built-in (or documented), it
>>would be a trivial VxD.
>
>... a fairly trivial VxD....This is a fairly useless response. I guess that 
>he (like I am) is asking for a piece of code that does the job.
>
>

I did a quick search of the vxd address space for a WRMSR instruction,
and didn't find any. So it looks like you'll have to write your own if
you want one.

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From: jwes@oro.net
Subject: Re: Win95 performance counter interface?
Date: 1998/12/09
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