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Full Discussion: Checking Unix Performance - Why is a process running slowly?
Top Forums UNIX for Dummies Questions & Answers Checking Unix Performance - Why is a process running slowly? Post 302442474 by Sunny Sid on Wednesday 4th of August 2010 10:30:11 AM
Old 08-04-2010
Checking Unix Performance - Why is a process running slowly?
Hi
Please can someone explain to me how they would go about monitoring the performance of a process in Unix. Lets say that a user is running a process in Unix but it seems to be taking a long time, whereas it completed a lot quicker yesterday. How would you go about investigating what is causing the process to run slower today in Unix?

The reason that I am confused is because there appears to be so many Unix commands that could be used when looking at performance issues. I am sure that you would use each Unix command for a specific reason but I want to know what you would do. Here are some commands that I know of:
Code:
ps -ef, top, du, ds, sar

Generally speaking, can you tell me what sequence of steps you would under take to understand why a process is running slowly and what Unix commands you would use to figure it out.

Many thanks
 

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LEARN ABOUT CENTOS

macutil

MACUTIL(1)						      General Commands Manual							MACUTIL(1)

NAME

       macutil - A package that deals with MacIntosh files on a Unix system

DESCRIPTION

       macutil	is  a package that contains a number of utilities that deal with MacIntosh files on a Unix system.  It contains the following pro-
       grams:

       binhex Convert files to BinHex 4.0 compatible hexified form.

       frommac
	      Receives files from the MacIntosh on the Unix system.

       hexbin Convert hexified files to their MacIntosh format.

       macsave
	      Save a series of files from a MacBinary stream as individual files.

       macstream
	      Combine a series of files to a MacBinary stream.

       macunpack
	      Unpack a MacIntosh archive into its constituents.

       tomac  Transmits files from the Unix system to a MacIntosh.

BUGS

       This manual page is hopelessly incomplete!

SEE ALSO

       binhex(1), frommac(1), hexbin(1), macsave(1), macstream(1), macunpack(1), tomac(1)

AUTHOR

       Dik T. Winter, CWI, Amsterdam, The Netherlands (dik@cwi.nl)

3rd Berkeley Distribution					 October 22, 1992							MACUTIL(1)
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