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Solaris The Solaris Operating System, usually known simply as Solaris, is a Unix-based operating system introduced by Sun Microsystems. The Solaris OS is now owned by Oracle.

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Old 12-18-2012
dimitris dimitris is offline
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System performance

Hi
I need to know the system performance :



Code:
 
# echo "::memstat" | mdb -k
Page Summary Pages MB %Tot
------------ ---------------- ---------------- ----
Kernel 358022 2797 9%
ZFS File Data 2427072 18961 59%
Anon 1096938 8569 27%
Exec and libs 12020 93 0%
Page cache 73859 577 2%
Free (cachelist) 52250 408 1%
Free (freelist) 81544 637 2%
Total 4101705 32044
Physical 4070935 31804



i have 32 G of RAM , please i need if my system is still ok or No?
BR//
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Old 12-18-2012
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bartus11 bartus11 is offline Forum Staff  
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Check output of vmstat 1 . If you see high values in "sr" and "fr" columns, then you are facing memory shortage.
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Old 12-18-2012
jim mcnamara jim mcnamara is offline Forum Staff  
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What you are seeing is most likely file system caching. Solaris considers unused memory a waste, so it parks (caches) data read from files or written to files in memory because it improves performance. The kernel will release file caches anytime there is a need for more memory.


Code:
Kernel 358022 2797 9%
ZFS File Data 2427072 18961 59%
Anon 1096938 8569 27%
Exec and libs 12020 93 0%
Page cache 73859 577 2%
Free (cachelist) 52250 408 1%
Free (freelist) 81544 637 2%
Total 4101705 32044
Physical 4070935 31804


Last edited by jim mcnamara; 12-18-2012 at 10:36 AM..
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Old 12-18-2012
jlliagre jlliagre is offline Forum Advisor  
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Quote:
Originally Posted by dimitris View Post
Code:
 
# echo "::memstat" | mdb -k
Page Summary Pages MB %Tot
------------ ---------------- ---------------- ----
Kernel 358022 2797 9%
ZFS File Data 2427072 18961 59%
...

Please edit your initial post with pasting the actual command output. That would make it much readable. There should be properly aligned columns here.
Quote:
i have 32 G of RAM , please i need if my system is still ok or No?
As you are asking, probably not. You might want to cap ZFS ARC size but that really depends on the applications you are running and their memory footprint.

Last edited by jlliagre; 12-18-2012 at 06:52 PM..
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Old 05-04-2013
lingeshwaran lingeshwaran is offline
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Your can see "vmstat 1 5" output to determine the system performance.
ZFS will use physical memory as ARC cache unless until it used by application.
When application needs more memory ,ZFS will release the cache automatically.
So you really no need to worry about that.
From the below output,you just need to monitor r,b,w columns and sr column (scan rate).If these values quite more,then your system performance is degraded

Code:
bash-3.00# vmstat 1 5
 kthr      memory            page            disk          faults      cpu
 r b w   swap  free  re  mf pi po fr de sr f0 s0 s1 s2   in   sy   cs us sy id
 0 0 32 955436 35360 56 151  1  1  2  0 143 -0 4  0  0  486  666  340  1  2 97
 0 0 29 688464 24576  1  42  3  0  0  0  0  0  6  0  0  602  719  347  1  1 98
 0 0 29 688384 24544 580 672 0  0  0  0  0  0  0  0  0  589  767  312  0  4 95
 1 0 29 688384 24544  8   8  0  0  0  0  0  0  0  0  0  550  597  326  0  0 100
 0 0 29 688384 24544 242 709 0  0  0  0  0  0  0  0  0  610 20194 377  2  4 94
bash-3.00#

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