Troubleshooting guide

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Cisco PGW 2200 Softswitch Release 9.8 Operations, Maintenance, and Troubleshooting Guide
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Chapter 3 Cisco PGW 2200 Softswitch Platform Operations
Daily Tasks
Verifying the Number of Users
You should check the number of users on the Cisco PGW 2200 Softswitch on a daily basis. To check,
log into the active Cisco PGW 2200 Softswitch and enter the following UNIX command:
who
The system returns a response like the following:
mgcusr pts/0 May 29 11:07 (mgcusr-u5.somecompany.com)
mgcusr2 pts/1 May 30 10:05 (mgcusr2-u6.somecompany.com)
Only known login IDs should be listed in the response. If the response indicates that there are unknown
login IDs, or login sessions that have lasted a very long time, you should contact the Cisco TAC for
assistance. See the “Obtaining Documentation and Submitting a Service Request” section on page xviii
for more information on contacting the Cisco TAC.
Verifying Available Virtual Memory
The operating system that is used on the Cisco PGW 2200 Softswitch, Solaris (Version 8 or 10), is a
virtual memory system. A virtual memory system adds to the available memory by writing the contents
of an unused block of memory to the disk. This data write to disk enables the system to use that block
of memory for another purpose. The space on the disk that is dedicated to this function is called swap
space. When the data in that block of memory is needed again, the system reads the stored block from
the swap space back into memory.
In a typical Cisco PGW 2200 Softswitch installation, the tmp directory (/tmp) is a temporary file system
mount that coexists in the same physical disk partition as the swap space. The system uses the tmp
directory to run several special files, such as FIFOs, which the system requires to run properly. As the
amount of space that is allocated to the tmp directory increases, the amount of space available for
running Cisco PGW 2200 Softswitch processes decreases, which can cause functional problems. You
need to minimize the amount of space that the tmp directory consumes.
Caution Do not copy other files into the /tmp directory, such as patches or other software. Use of this directory
for temporary storage or for downloading can cause functional problems with the Cisco PGW 2200
Softswitch software.
To determine the amount of available virtual memory, you must compare the amount of virtual memory
in use to the maximum amount of virtual memory for your system. To conduct this comparison, perform
the following steps:
Note Be aware that the time of day when you enter these commands affects the overall accuracy of the
response. If you enter these commands during your busiest hours, the amount of available virtual
memory could be quite small. However, this reduction in virtual memory might not indicate a need to
contact the Cisco TAC.
Consider performing this procedure during a period of less active call processing, to determine an
average amount of available virtual memory.
The maximum amount of virtual memory is the sum of the physical memory and the size of the swap
space. To determine the amount of physical memory on your system, complete the following steps: