Procedure 7-4 Problem: There Is Not Enough Swap Space Added Or The Solaris Platform Is Disk Bound - Alcatel 5620 Troubleshooting Manual

7 — Troubleshooting Solaris and Windows platforms
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Procedure 7-4 Problem: There is not enough swap space added or
the Solaris platform is disk bound
You can add swap space to improve memory performance. For a more permanent
solution, add more RAM. Use this procedure when:
When you allocate a file to be used as emergency swap space, the amount of swap
space available increases without reformatting a disk.
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The sr column under the disk heading shows the scan rate. The scan rate is the key
factor because it indicates how often the system scans memory for idle pages to
swap out. When the scan rate is zero, there is no swap problem. The higher the scan
rate, the more time the system is spending copying code and data in and out of
memory.
Check the memory swap and free columns. When there is little or no available free
memory, you need more swap space.
You can add swap space to resolve memory bottleneck problems and improve
performance. Contact your technical support representative for information about
adding new disks to provide the necessary swap space to stop memory bottlenecks.
Perform Procedure 7-4 to add emergency swap space to provide a temporary
solution.
Check the minimum supported platform size for the software to ensure enough
swap space is allocated.
To stop the vmstat command, press CTRL-C.
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insufficient disk space causes memory performance issues
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insufficient swap space was installed, or the network load requires more swap
space
Note — Before creating a new swap file, run the swap -l and swap -s
commands to determine how much disk space is currently allocated.
Then perform the swap -s command after creating a new swap file to
verify that the new emergency swap space was correctly allocated.
As root, type:
df -k ↵
The displayed information lists the capacity and usage of the available disk space.
Determine where there is enough disk space to create a swap file.
Change directories by typing:
cd /swapdirectory ↵
where swapdirectory is the name of the directory where you are going to create a new swap file
Alcatel 5620 Service Aware Manager, Release 2.1 R2
May 2005 95-5887-01-00-B