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Pls. help with vmstat output...

 
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Top Forums UNIX for Dummies Questions & Answers Pls. help with vmstat output...
# 1  
Old 12-23-2013
Pls. help with vmstat output...
Hi,

Users are reporting performance issue on my Sun Solaris 10 server. I am on the server. I don't see a issue or I might be looking at the wrong thing. Please help.

I don't see anything on sar. it's all zero on that. Not sure why users are reporting high CPU and unresponsive at times. Please advise.

Code:
 
 
bash-3.00# vmstat 5 10
 kthr      memory            page            disk          faults      cpu
 r b w   swap  free  re  mf pi po fr de sr s1 s2 s3 s4   in   sy   cs us sy id
 0 0 0 20506808 4478936 14 42 3 0  0  0  0 80  0 -0 25  576 5189 1193  2  2 96
 0 0 0 15647368 547008 2  4  2  0  0  0  0  0  0  0 28  457  926  612  0  1 99
 0 0 0 15647368 547064 0  0  0  0  0  0  0  0  0  0 27  362 1023  588  0  1 99
 0 0 0 15647368 547064 14 55 0  0  0  0  0  0  0  0 43  395 1450  793  0  1 99
 0 0 0 15646288 546128 223 331 6 2 2  0  0  0  0  0 31  375 2598  800  2  2 95
 0 0 0 15647336 547024 0  0  0  0  0  0  0  0  0  0 34  373  921  621  0  1 99
 0 0 0 15647296 546984 0  0  0  0  0  0  0  0  0  0 26  370 1735  615  1  1 98
 0 0 0 15647296 546984 0  0  0  0  0  0  0  0  0  0 29  611 2301  650  1  1 98
 0 0 0 15647168 546856 0  0  0  0  0  0  0  0  0  0 27  595  807  570  0  1 99
 0 0 0 15646896 546584 5 35  0  0  0  0  0  0  0  0 30  615 1287  679  0  1 99

Code:
bash-3.00# swap -s
total: 6042408k bytes allocated + 74784k reserved = 6117192k used, 15714592k available

Code:
bash-3.00# vmstat -s
        0 swap ins
        0 swap outs
        0 pages swapped in
        0 pages swapped out
278719283 total address trans. faults taken
  1550955 page ins
    47604 page outs
  2563835 pages paged in
    83755 pages paged out
 95569406 total reclaims
 95554145 reclaims from free list
        0 micro (hat) faults
278719283 minor (as) faults
  1400663 major faults
366825812 copy-on-write faults
 56843033 zero fill page faults
    61436 pages examined by the clock daemon
        0 revolutions of the clock hand
    68470 pages freed by the clock daemon
  1225565 forks
   266840 vforks
  1265895 execs
7944256901 cpu context switches
3833984919 device interrupts
493857253 traps
34555934259 system calls
3694815074 total name lookups (cache hits 95%)
 56576969 user   cpu
 52216516 system cpu
2555164048 idle   cpu
        0 wait   cpu


# 2  
Old 12-23-2013
You are experiencing some paging (see po column and observe swap and free)... the fix (usually) is more memory. When you have low cpu utilization and people are complaining, this is often times the cause.
 
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