SQL Profiler v/s Query window

Question

SQL Profiler v/s Query window

ningaraju.n

SSCrazy

Points: 2322
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November 16, 2010 at 7:19 am

#231702

Hi Guys,
I noticed in the pro filer that an Stored procedure taking less reads but duration is uncountable ,
If i execute the same SP in Query window it returning results in a second
What might be the problem ,Please guide me

Viewing 9 posts - 1 through 8 (of 8 total)

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Lowell SSC Guru Points: 323518 More actions · Answer 1

help us help you...when i read your question, i think the question is "when i profile my procedure, it never finishes. when i just run it, it is fast"

is that correct?

or is this a question about SOMETIMES your procedure is slow, and sometimes it is fast(parameter sniffing?)

Lowell

--help us help you! If you post a question, make sure you include a CREATE TABLE... statement and INSERT INTO... statement into that table to give the volunteers here representative data. with your description of the problem, we can provide a tested, verifiable solution to your question! asking the question the right way gets you a tested answer the fastest way possible!

ningaraju.n SSCrazy Points: 2322 More actions · Answer 2

Let me explain what actually happened

We found that application was slow ,So we switched on profiler to find the slow running query.

As we measure the performance of query/SP in terms of reads,CPU,Duration etc.we saw the SP which is taking less reads but uncountable duration (Milli seconds).We thought that this SP might slowing down the application and took the profiler data of that SP and executed in query window but it hardly took an second.If this Sp is not of performance issue then why the duration in profiler was very very high?

I hope you i reached you.

ps. One Orange Chip Points: 29422 More actions · Answer 3

Did you run the SP or did you run the T-SQL code which is part of SP?

If it is latter, I'll agree with Lowell's second point. It's highly likely due to parameter sniffing.

Pradeep Singh

ningaraju.n SSCrazy Points: 2322 More actions · Answer 4

I ran whole SP,Then what might be the reason for uncountable duration for that SP?

Is there any way to reduce the duration?

ps. One Orange Chip Points: 29422 More actions · Answer 5

Does your SP accepts parameters? If yes, pls modify the parameters to different sets of values and observe the time taken by it. is it same?

Profiler does nothing but gives you details of the SP which was invoked by a process or a user.

Pradeep Singh

ningaraju.n SSCrazy Points: 2322 More actions · Answer 6

I checked with as you suggested and it returning the same . what the duration accounts for?

ps. One Orange Chip Points: 29422 More actions · Answer 7

Duration is the total time spent by that SP/Query. Its measured in milliseconds.

Pradeep Singh

ningaraju.n SSCrazy Points: 2322 More actions · Answer 8

Is there any way to reduce it as it going beyond the count..