Solaris memory question...


 
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Operating Systems Solaris Solaris memory question...
# 1  
Old 11-26-2013
Solaris memory question...

On my Solaris 10 server we are having memory issue. I did top and I see this.

Code:
 
last pid:  8876;  load avg:  0.19,  0.16,  0.16;       up 50+05:24:02                                        14:56:53
80 processes: 77 sleeping, 1 stopped, 2 on cpu
CPU states: 93.5% idle,  3.1% user,  3.4% kernel,  0.0% iowait,  0.0% swap
Memory: 16G phys mem, 740M free mem, 16G total swap, 16G free swap

From the above it seems I have 16G memory but I only have 740 free mem. Why is swap memory at 16 gig. is that wrong?
# 2  
Old 11-26-2013
Show us output of following commands:
Code:
echo ::memstat | mdb -k
prstat -a 1 1| nawk '/NPROC/{p=1}p'
vmstat 1 10

# 3  
Old 11-26-2013
On many systems cache memory is not listed under 'free' even though it's as good as free for all purposes.
# 4  
Old 11-27-2013
The following prints % used virtual memory:
Code:
swap -s | nawk '{print int($9*100/($11+$9))}'

Below 75 is okay.
# 5  
Old 11-27-2013
Swap is 16G, because the system is configured to have 16G swap.

Other then that, this output would suggest everything is ok.

How does this 'memory issue' manifest ?
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