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Old 09-12-2009, 02:14 AM   #1
nagavinodh
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Registered: Aug 2009
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input and output


Hi,
In Linux,how to check the iostat on linux.I have some questions.please tell anyone.

can we find how many sectors in a file?
How to find many blocks in a file?
How to find the block size in a file?
can we reduce the I/O in linux?if it's what way?
How to the check DISK controller?Is there anyway to increase the performance?
Which DISK Type is better for perfromance whether HDA or others
 
Old 09-12-2009, 03:01 AM   #2
lutusp
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Quote:
Originally Posted by nagavinodh View Post
Hi,
In Linux,how to check the iostat on linux.I have some questions.please tell anyone.

can we find how many sectors in a file?
How to find many blocks in a file?
How to find the block size in a file?
can we reduce the I/O in linux?if it's what way?
How to the check DISK controller?Is there anyway to increase the performance?
Which DISK Type is better for perfromance whether HDA or others
To determine the approximate number of sectors required for a file, divide the file's length by the HDD sector size. It's always going to be approximate because storage size rounds up to the next full sector.

Blocks, essentially the same answer -- it gets worked out by the number of sectors in a block, and (again) how many sectors required by the file. The term "block" has pretty much gone out of fashion, because it doesn't have a strict meaning.

Quote:
How to find the block size in a file?
This is either a repeat of the question above it, or it has no meaning.

Quote:
can we reduce the I/O in linux?if it's what way?
Well, we can turn off the computer -- that does wonders for reducing I/O. We can also buy more RAM, which has the effect of caching prior reads.

Quote:
How to the check DISK controller?Is there anyway to increase the performance?
Okay ... is this homework? Only a computer science instructor would ask such absurd questions.

Quote:
Which DISK Type is better for perfromance whether HDA or others
HDA isn't a disk type, it's a common disk device assignment.

Hmm ... this is homework! And your instructor is either not very bright or he is trying to trick you into asking silly questions in a public forum.
 
Old 09-12-2009, 03:17 AM   #3
nagavinodh
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Posts: 118

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Quote:
Originally Posted by lutusp View Post
To determine the approximate number of sectors required for a file, divide the file's length by the HDD sector size. It's always going to be approximate because storage size rounds up to the next full sector.

Blocks, essentially the same answer -- it gets worked out by the number of sectors in a block, and (again) how many sectors required by the file. The term "block" has pretty much gone out of fashion, because it doesn't have a strict meaning.



This is either a repeat of the question above it, or it has no meaning.



Well, we can turn off the computer -- that does wonders for reducing I/O. We can also buy more RAM, which has the effect of caching prior reads.



Okay ... is this homework? Only a computer science instructor would ask such absurd questions.



HDA isn't a disk type, it's a common disk device assignment.

Hmm ... this is homework! And your instructor is either not very bright or he is trying to trick you into asking silly questions in a public forum.
Thanks for reply.please answer it polietly ...............

Last edited by nagavinodh; 09-12-2009 at 04:20 AM.
 
  


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