how to check solaris memory usage?

[steven]

how to check solaris memory usage?

[whcdavid]

You can use prastat -a command.

[Alexandre]

You can use

sar -r -f sa25

sar -u 10 60

mpstat 10 60

[joe]

more help:

Solaris display Memory Size (RAM size):

prtconf | grep Mem
or

prtconf|grep -i mem
Available page sizes (SWAP) for Solaris:

pagesize -a
Display RAM Size on HP-UX:

dmesg
Display RAM Size on AIX

lsdev -C|grep mem
Now if memory device is mem0, then type

lsattr -El mem0

All linux distro:

free
Also almost all UNIX system support vmstat command, use vmstat to get more info.

vmstat

[Athlon]

Thanks for great information. vmstat is good choice

[jasicajhon]

Thanks for great information. To get one of our new Solaris servers well optimized, I’ve tried different ways to check memory usage recently.

[ghostwriter]

vmstat is not that useful to measure memory usage. It doesn't give any metric quantifying how much virtual and physical memory is used and what is using it. It is however a very good tool to measure RAM shortage. You just need to monitor the sr column (scan rate). As long as it stays equal to zero, you shouldn't worry about RAM. If it is not equal to zero, you should investigate what is demanding RAM.