C / C++ / MFC

10-Dec-05 11:54

Is there a known way of getting disk throughput? I suppose it has something to do with performance counters, but I'm not sure how to use them properly.. D'Oh! | :doh:

Does anyone know a good article, link, or something..? I'd be most gratefull Cool | :cool:

---
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Our site features contents and several images. All of this is very weird.

In the end, war is not about who's right, it's about who's left.

David Crow10-Dec-05 16:38

David Crow

10-Dec-05 16:38

T1TAN wrote:
I suppose it has something to do with performance counters, but I'm not sure how to use them properly...

But do you know which one you are interested in?

"Take only what you need and leave the land as you found it." - Native American Proverb

T1TAN11-Dec-05 21:32

11-Dec-05 21:32

Hm. Good question indeed. I believe it's this one:

LogicalDisk|PhysicalDisk\Disk Bytes/sec

"Indicates the rate at which bytes are transferred and is the primary measure of disk throughput.
To analyze transfer data based on reads and writes, use Disk Read Bytes/sec and Disk Write Bytes/sec, respectively."

This[^] is all I could find.. D'Oh! | :doh:

---
http://sprdsoft.cmar-net.org - We Sprd You Softly
Our site features contents and several images. All of this is very weird.

In the end, war is not about who's right, it's about who's left.

David Crow12-Dec-05 3:28

David Crow

12-Dec-05 3:28

T1TAN wrote:
LogicalDisk|PhysicalDisk\Disk Bytes/sec

It would look something like:

HQUERY hQuery = NULL;
PDH_STATUS pdhStatus = PdhOpenQuery(NULL, 0, &hQuery);
 
// Make counter path            
PDH_COUNTER_PATH_ELEMENTS pdhCpe;
pdhCpe.szMachineName    = TEXT("server");
pdhCpe.szObjectName     = TEXT("LogicalDisk");
pdhCpe.szInstanceName   = TEXT("C:");
pdhCpe.szParentInstance = NULL;
pdhCpe.dwInstanceIndex  = -1;
pdhCpe.szCounterName    = TEXT("Disk Bytes/sec");
DWORD dwBufferSize = sizeof(szBytesSec);
TCHAR szBytesSec[128];
pdhStatus = PdhMakeCounterPath(&pdhCpe, szBytesSec, &dwBufferSize, 0);
 
// Add counter
HCOUNTER hBytesSec;
pdhStatus = PdhAddCounter(hQuery, szBytesSec, 0, &hBytesSec);
 
// Get the data
pdhStatus = PdhCollectQueryData(hQuery);
 
// Format counter value
PDH_FMT_COUNTERVALUE pdhfmtBytesSec;
pdhStatus = PdhGetFormattedCounterValue(hBytesSec, PDH_FMT_LONG, NULL, &pdhfmtBytesSec);
 
pdhStatus = PdhCloseQuery(hQuery);

"Take only what you need and leave the land as you found it." - Native American Proverb

-- modified at 9:28 Monday 12th December, 2005

T1TAN12-Dec-05 3:39

12-Dec-05 3:39

Thanx! Will give it a try and let you know how it worked Cool | :cool:

Do you think I could use this code with CPerfCounters class located in this[^] article?

Is there a way to get the maximum bytes per sec?? I would like to get the percentage of max disk throughput if possible Smile | :)

thanx again DC Rose | [Rose]

---
http://sprdsoft.cmar-net.org - We Sprd You Softly
Our site features contents and several images. All of this is very weird.

In the end, war is not about who's right, it's about who's left.

David Crow12-Dec-05 5:51

David Crow

12-Dec-05 5:51

T1TAN wrote:
Do you think I could use this code with CPerfCounters class located in this[^] article?

Not sure. How about asking the article's author?

T1TAN wrote:
Is there a way to get the maximum bytes per sec??

Sure. Each time the value is obtained, store the highest value in a separate variable.

"Take only what you need and leave the land as you found it." - Native American Proverb

T1TAN12-Dec-05 20:36

How to switch a line to a handset in TAPI?

12-Dec-05 20:36

DavidCrow wrote:
Not sure. How about asking the article's author?

Em, yeah..that seems like a good idea.. Blush | :O

DavidCrow wrote:
Sure. Each time the value is obtained, store the highest value in a separate variable.

Oh I didn't mean that highest value, what I meant was: is there a way to get the maximum throughput that could ever happen on a specific drive? D'Oh! | :doh:

Not the highest one I've ever measured. I'm not really sure this is possible. I suppose each drive has its own throughput limit.. Confused | :confused:

---
http://sprdsoft.cmar-net.org - We Sprd You Softly
Our site features contents and several images. All of this is very weird.

In the end, war is not about who's right, it's about who's left.

Hamed Musavi10-Dec-05 10:03

Important programming truths ;)

10-Dec-05 10:03

Hi,
I'm writing a TAPI App. I listen the line, take the phone, Play a sound, process DTMF (key tones the user presses).

If user selects 0 it is (s)he wants to talk to an operator(human kind! operator).

How to do that? Confused | :confused:

Any link, article, short description or a single word would be helpfull and appreciated. Thank you very much. Rose | [Rose]

//This is not a signature
while (I'm_alive) {
printf("I Love Programming");
}

Hamed Musavi10-Dec-05 9:37

10-Dec-05 9:37

Hi,
I know here's not a good place for a message like this, but I thought it might be fun while your working very hard Poke tongue | ;-P

http://liw.iki.fi/liw/texts/programming-truths.html[^]

//This is not a signature
while (I'm_alive) {
printf("I Love Programming");
}

-- modified at 15:40 Saturday 10th December, 2005

Lord Kixdemp10-Dec-05 18:21

Lord Kixdemp

10-Dec-05 18:21

Half of that are SO not true... specially the one that says "Portability isn't useful."... ROFL Dead | X|

Lord Kixdemp
www.SulfurMidis.com
www.SulfurSoft.tk
[ftp://][http://][hotline://]tsfc.ath.cx

Alex Orovetskiy10-Dec-05 19:33

Alex Orovetskiy

10-Dec-05 19:33

Half of software based only on probability :P

Lord Kixdemp10-Dec-05 19:51

Lord Kixdemp

10-Dec-05 19:51

What about the "Run-time errors don't occur." one? WTF | :WTF:

Lord Kixdemp
www.SulfurMidis.com
www.SulfurSoft.tk
[ftp://][http://][hotline://]tsfc.ath.cx

Alex Orovetskiy10-Dec-05 20:57

Alex Orovetskiy

10-Dec-05 20:57

There's some really hidden irony there which I cannot find.

Tim Smith11-Dec-05 6:39

Tim Smith

11-Dec-05 6:39

*cough*

NONE ARE TRUE

Mad | :mad:

Tim Smith

I'm going to patent thought. I have yet to see any prior art.

Bob Stanneveld11-Dec-05 7:48

Bob Stanneveld

11-Dec-05 7:48

Hello,

I think that you would have gotten better reactions when you posted this in the lounge..

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Hamed Musavi11-Dec-05 18:06

11-Dec-05 18:06

You're absolutely true!
I thought it would be fun, I never thought people will be angry Confused | :confused:

They say this is not true or that on!! while I think most of it is just joke
and probably not true(nearly all of it!).

Anyway, this was the last time, I promise. Sigh | :sigh:

//This is not a signature
while (I'm_alive) {
printf("I Love Programming");
}

Bob Stanneveld12-Dec-05 2:56

Bob Stanneveld

12-Dec-05 2:56

I think that they got angry at themselves because the wasted precious time looking for a solution for one of their problems. I think that you should ignore these reactions and next time look for a better audiance that is looking for wasting their precious time. Smile | :)

Hamed Mosavi wrote:
I thought it would be fun

I thought that it was kinda fun to read. I knew some of it already and it didn't make me rofl or something. I think that the web would be a lesser place without people like you. Keep posting!

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Hamed Musavi12-Dec-05 6:40

12-Dec-05 6:40

Thank you

Very informative and encouraging.
At least I learned something,. Much better than those 'mad' and 'unwell' smilies(!) from others.

Thank you

//This is not a signature
while (I'm_alive) {
printf("I Love Programming");
}