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Memory tune on Hpux 11.31

 
Trng
Super Advisor

Memory tune on Hpux 11.31

Hi Team,

 

 

what is "btree_chunk_are " in hpux 11.31  and what causing this to grow ?.i have seen in my system 10% of physcial memory goes to this (kmeminfo - arena)

 

Fixed arena "btree_chunk_are" owns 338054 pages (1.3gb):
Regular (Closest First) free lists account for 338054 pages (1.3gb):
  Free objects represent 435.8mb (33%) of all memory of this type in this arena.
  idx objsz   pages   bytes   %   nobjs    used    free   %
    0   512  338054    1.3g 100 2366378 1589946  776432  33

 

 

 

 

 

how to reduce this utilisation and what is causing it to grow ?

 

 

2--secondly on waht situation can i tell my system is in need of additional physcial memory .. below swapinfo  shows any clue ?

 

             Mb      Mb      Mb   PCT  START/      Mb
TYPE      AVAIL    USED    FREE  USED   LIMIT RESERVE  PRI  NAME
dev        8192    1248    6944   15%       0       -    1  /dev/vg00/lvol2
dev       24576    1243   23333    5%       0       -    1  /dev/vg00/lvol9
reserve       -   10030  -10030
memory    31069   25845    5224   83%
total     63837   38366   25471   60%       -       0    -

 

 

3-high pagein value shows memory pressure ?

 

        procs           memory                   page                              faults       cpu
    r     b     w      avm    free   re   at    pi   po    fr   de    sr     in     sy    cs  us sy id
    5     2     0  2982892  113117    5    0    36   27     2    0    76   9828  78469  4649  16  4 80
    5     2     0  2982892  112925    9    0    40    0     0    0     0  23165 384036  6751  28  4 68
    2     0     0  2595504  117242    2    0    12    0     0    0     0  24536 368680  7145  23  4 74
    2     0     0  2595504  119333    0    0     100   0     0    0     0  20838 374416  5623  25  4 71
    4     4     0  2399105  117078    0    0     50    0     0    0     0  18492 356707  5232  21  4 75

 

 

rgds,trng

administrator
1 REPLY
Dennis Handly
Acclaimed Contributor

Re: Memory tune on HP-UX 11.31

3-high pagein value shows memory pressure?

 

If they were pageout instead.