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  #1  
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Balaji
 
Posts: n/a

Default %Disk Time - 05-16-2008 , 01:20 PM





Dear All,

I am doing a performance analysis for one of my customer. After
analysis of the perfmon logs I foundout average _Total %DiskTime is
around 140, when I did a details analysis I found the data drive
%DiskTime is 90% of the _Total %DiskTime.

Now how do I findout what is causing this huge disk activity in data
drive and how do I isolate the disk activity of SQL Server.

Regards
Balaji

Reply With Quote
  #2  
Old   
Andrew J. Kelly
 
Posts: n/a

Default Re: %Disk Time - 05-16-2008 , 01:33 PM





fn_virtual_filestats will tell you which file(s) are doing the physical
reads or writes and a trace will tell you what is doing it.

--
Andrew J. Kelly SQL MVP
Solid Quality Mentors


"Balaji" <tbalajiprabhu (AT) gmail (DOT) com> wrote

Quote:
Dear All,

I am doing a performance analysis for one of my customer. After
analysis of the perfmon logs I foundout average _Total %DiskTime is
around 140, when I did a details analysis I found the data drive
%DiskTime is 90% of the _Total %DiskTime.

Now how do I findout what is causing this huge disk activity in data
drive and how do I isolate the disk activity of SQL Server.

Regards
Balaji


Reply With Quote
  #3  
Old   
Andrew J. Kelly
 
Posts: n/a

Default Re: %Disk Time - 05-16-2008 , 01:33 PM


fn_virtual_filestats will tell you which file(s) are doing the physical
reads or writes and a trace will tell you what is doing it.

--
Andrew J. Kelly SQL MVP
Solid Quality Mentors


"Balaji" <tbalajiprabhu (AT) gmail (DOT) com> wrote

Quote:
Dear All,

I am doing a performance analysis for one of my customer. After
analysis of the perfmon logs I foundout average _Total %DiskTime is
around 140, when I did a details analysis I found the data drive
%DiskTime is 90% of the _Total %DiskTime.

Now how do I findout what is causing this huge disk activity in data
drive and how do I isolate the disk activity of SQL Server.

Regards
Balaji


Reply With Quote
  #4  
Old   
Andrew J. Kelly
 
Posts: n/a

Default Re: %Disk Time - 05-16-2008 , 01:33 PM


fn_virtual_filestats will tell you which file(s) are doing the physical
reads or writes and a trace will tell you what is doing it.

--
Andrew J. Kelly SQL MVP
Solid Quality Mentors


"Balaji" <tbalajiprabhu (AT) gmail (DOT) com> wrote

Quote:
Dear All,

I am doing a performance analysis for one of my customer. After
analysis of the perfmon logs I foundout average _Total %DiskTime is
around 140, when I did a details analysis I found the data drive
%DiskTime is 90% of the _Total %DiskTime.

Now how do I findout what is causing this huge disk activity in data
drive and how do I isolate the disk activity of SQL Server.

Regards
Balaji


Reply With Quote
  #5  
Old   
Andrew J. Kelly
 
Posts: n/a

Default Re: %Disk Time - 05-16-2008 , 01:33 PM


fn_virtual_filestats will tell you which file(s) are doing the physical
reads or writes and a trace will tell you what is doing it.

--
Andrew J. Kelly SQL MVP
Solid Quality Mentors


"Balaji" <tbalajiprabhu (AT) gmail (DOT) com> wrote

Quote:
Dear All,

I am doing a performance analysis for one of my customer. After
analysis of the perfmon logs I foundout average _Total %DiskTime is
around 140, when I did a details analysis I found the data drive
%DiskTime is 90% of the _Total %DiskTime.

Now how do I findout what is causing this huge disk activity in data
drive and how do I isolate the disk activity of SQL Server.

Regards
Balaji


Reply With Quote
  #6  
Old   
Andrew J. Kelly
 
Posts: n/a

Default Re: %Disk Time - 05-16-2008 , 01:33 PM


fn_virtual_filestats will tell you which file(s) are doing the physical
reads or writes and a trace will tell you what is doing it.

--
Andrew J. Kelly SQL MVP
Solid Quality Mentors


"Balaji" <tbalajiprabhu (AT) gmail (DOT) com> wrote

Quote:
Dear All,

I am doing a performance analysis for one of my customer. After
analysis of the perfmon logs I foundout average _Total %DiskTime is
around 140, when I did a details analysis I found the data drive
%DiskTime is 90% of the _Total %DiskTime.

Now how do I findout what is causing this huge disk activity in data
drive and how do I isolate the disk activity of SQL Server.

Regards
Balaji


Reply With Quote
  #7  
Old   
Andrew J. Kelly
 
Posts: n/a

Default Re: %Disk Time - 05-16-2008 , 01:33 PM


fn_virtual_filestats will tell you which file(s) are doing the physical
reads or writes and a trace will tell you what is doing it.

--
Andrew J. Kelly SQL MVP
Solid Quality Mentors


"Balaji" <tbalajiprabhu (AT) gmail (DOT) com> wrote

Quote:
Dear All,

I am doing a performance analysis for one of my customer. After
analysis of the perfmon logs I foundout average _Total %DiskTime is
around 140, when I did a details analysis I found the data drive
%DiskTime is 90% of the _Total %DiskTime.

Now how do I findout what is causing this huge disk activity in data
drive and how do I isolate the disk activity of SQL Server.

Regards
Balaji


Reply With Quote
  #8  
Old   
Andrew J. Kelly
 
Posts: n/a

Default Re: %Disk Time - 05-16-2008 , 01:33 PM


fn_virtual_filestats will tell you which file(s) are doing the physical
reads or writes and a trace will tell you what is doing it.

--
Andrew J. Kelly SQL MVP
Solid Quality Mentors


"Balaji" <tbalajiprabhu (AT) gmail (DOT) com> wrote

Quote:
Dear All,

I am doing a performance analysis for one of my customer. After
analysis of the perfmon logs I foundout average _Total %DiskTime is
around 140, when I did a details analysis I found the data drive
%DiskTime is 90% of the _Total %DiskTime.

Now how do I findout what is causing this huge disk activity in data
drive and how do I isolate the disk activity of SQL Server.

Regards
Balaji


Reply With Quote
  #9  
Old   
Andrew J. Kelly
 
Posts: n/a

Default Re: %Disk Time - 05-16-2008 , 01:33 PM


fn_virtual_filestats will tell you which file(s) are doing the physical
reads or writes and a trace will tell you what is doing it.

--
Andrew J. Kelly SQL MVP
Solid Quality Mentors


"Balaji" <tbalajiprabhu (AT) gmail (DOT) com> wrote

Quote:
Dear All,

I am doing a performance analysis for one of my customer. After
analysis of the perfmon logs I foundout average _Total %DiskTime is
around 140, when I did a details analysis I found the data drive
%DiskTime is 90% of the _Total %DiskTime.

Now how do I findout what is causing this huge disk activity in data
drive and how do I isolate the disk activity of SQL Server.

Regards
Balaji


Reply With Quote
  #10  
Old   
Andrew J. Kelly
 
Posts: n/a

Default Re: %Disk Time - 05-16-2008 , 01:33 PM


fn_virtual_filestats will tell you which file(s) are doing the physical
reads or writes and a trace will tell you what is doing it.

--
Andrew J. Kelly SQL MVP
Solid Quality Mentors


"Balaji" <tbalajiprabhu (AT) gmail (DOT) com> wrote

Quote:
Dear All,

I am doing a performance analysis for one of my customer. After
analysis of the perfmon logs I foundout average _Total %DiskTime is
around 140, when I did a details analysis I found the data drive
%DiskTime is 90% of the _Total %DiskTime.

Now how do I findout what is causing this huge disk activity in data
drive and how do I isolate the disk activity of SQL Server.

Regards
Balaji


Reply With Quote
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