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SystemAdmin
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Pinned topic Expansion factor to 1 but compressed pool greater than 0

‏2013-03-20T16:09:39Z |
Hi;

Can somebody explain me this output, how is it possible to have a compressed pool with an Expansion Factor set to 1.0 (no compression at all); (Compressed pool is almost 3GB in the capture below)


AME TMEM,MB   16384 CMEM,MB    2933 EF[T/A] 1.0/1.0 CI:0.0  CO:0.0


Look at the csz/cfr values :

# vmstat -c 1   System Configuration: lcpu=8 mem=16384MB tmem=16384MB ent=0.20 mmode=dedicated-E   kthr                           memory                                  page                 faults                 cpu ------- ------------------------------------------------------ ----------------------- ------------------ ----------------------- r   b        avm        fre        csz        cfr        dxm    ci    co    pi    po    in     sy    cs us sy id wa    pc    ec 0   0    4770013     717363     751014     734260          0     0     0     0     0    36   1057  1277  2 63 25 10  0.64 320.3 0   0    4770013     717349     751014     734260          0     0     0     0     0   183   1543  1537 15 11 73  1  0.09  47.4 1   0    4770013     717349     751014     734260          0     0     0     0     0 7    906  1147  4  5 91  0  0.04  17.8


This lpar had a factor set to 2.0 and memory yo 8GB, factor was modified to 1.0 and memory to 16GB using dlpar, is this compressed pool due to the past configuration of this lpar.

Thanks a lot for your help.

Benoît.

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