There is almost no point in doing any other analysis while the machine is swapping. If the problem is that the system’s memory is just too small, move some applications to another machine or increase the size of physical memory. If the problem is an application that is configured to use too much memory, either reconfigure the application or add more physical memory to the computer. If the problem is a rogue process, try to identify the offending process (memory used by process can be displayed by the ‘ps’ and ‘top’ commands), and either disable the application or install a new copy of the application that does not have the problem. everything is configured normally and running properly, but the computer’s physical memory is just too small for the job mix that is executing on the machine.some software package is improperly configured and is using too much memory (for example, creating an Oracle System Global Area that is too large for the system’s physical memory).some rogue process has consumed massive amounts of memory and has forced the machine into a swapping state.There are three common causes of swapping: Swapping dramatically reduces a computer’s throughput. If there is any significant amount of swapping, something is seriously wrong. The numbers should almost always be zeros. Scan down the swap columns in the vmstat.data file. Read more here on checking the health of a Windows 2000/XP/2003 computer. The file /tmp/vmstat.data will contain three lines of output for each of the 24 hours. ’Īfter the 24 hours has elapsed cancel the command. This can be done by typing ‘vmstat 1200 > /tmp/vmstat.data. I recommend that you run vmstat for a 24 hour period and save the information into a file. It can be run by typing ‘vmstat 5 ‘ which will display one line of data every 5 seconds until it is canceled. Vmstat is a Unix/Linux command that displays the status of the virtual memory kernel plus some other useful system statistics. There are six steps to a basic health checkup for a Unix/Linux server but before starting the checkup run the vmstat system utility program. An occasional health checkup will improve a computer system’s service and extend its useful life.
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