12480 Nokia Network Voyager for IPSO 4.0 Reference GuideDisk and Swap SpaceThe Disk and Swap Space Utilization page shows system resources use, including disk and swapspace use. This page retrieves the updated disk and swap space use every 20 seconds.For each file system, you can monitor the number of kilobytes used and available, the percentageof disk space being used, the number of inodes used and free, and the location where it ismounted. The inode is the internal identifier for a file and a limited number are available in apartition. A system can run out of inodes before running out of disk space.For swap space, you can monitor the name of the device, total number of swap data blocks onthe device, the number of used and free swap data blocks on the device, and the type of device.NoteYou should monitor the /config, /var, and /opt partitions, since these store the configurationfiles and logs and optional user software. Unlike read-only partitions, these can growdynamically.Monitoring Process UtilizationThe Process Utilization page shows the status of processes. You must monitor and controlprocesses to manage CPU and memory resources.This page retrieves the updated process status every 30 seconds. When you access this page, atable displays the following fields for each process: USER—User who initiated or executed the process. PID—Identifier used by the kernel to uniquely identify the process. %CPU—Percentage of CPU used by the process while active. This is a decaying averagetaken over a time period of up to the previous minute. Because the time base over whichCPU utilization of the process is computed varies (processes might be very young), the sumof all CPU fields can exceed 100%. %MEM—Percentage of real memory used by the process while active. VSZ—Virtual size of the process in KBs (also called vsize). RSS—Real memory (resident set) size of the process in KBs. WCHAN—Wait channel (as a symbolic name). This is the event on which a process waits. STAT—Symbolic process state given as a sequence of letters. For example, R indicates arunnable process (R) that is a session leader (s). For more information, see the process statusman page (man ps). STARTED—Time the command started. TIME—Accumulated CPU time: user plus system (alias cputime). COMMAND—Command and arguments.
