HI! Folks,
I need some help with memory stats. I have an Oracle database running.
Below is he OS version :
Linux tsonode1 2.4.9-e.25enterprise #1 SMP Fri Jun 6 17:55:13 EDT 2003
i686 unknown
oracle@tsonode1[tsodev1]$ free -t
total used free shared buffers
cached
Mem: 2058760 1814816 243944 742204 243924
213272
-/+ buffers/cache: 1357620 701140
Swap: 2096472 217516 1878956
Total: 4155232 2032332 2122900
>From the above as to what I understand is
Total Physical memory is : 2 GB
USED 1.35 GB is used
Free 701 Megs
So of the 1.35 used
Oracle SGA is 950 Megs
Oracle PGA ( Process memory ) 260 Megs
Other non-oacle process 150 Megs
Total 1.35 GB
Now there is a limitation on RH 2.1 Advanced server for having oracle
SGA > 1.8 GB. To increase the SGA we had to
Changes to the memory settings and relinked the oracle binaries as
explained in the RH doc.
OS : Linux tsonode2 2.4.9-e.46enterprise #1 SMP Wed Jun 30 18:11:26 EDT
2004 i686 unknown
total used free shared buffers
cached
Mem: 3863184 3708420 154764 2461228 333072
587348
-/+ buffers/cache: 2788000 1075184
Swap: 2096472 1116 2095356
Total: 5959656 3709536 2250120
SGA : 2.75 GB
PGA : 837 Megs
Total Physical memory is 4 GB on ths host.
So now the confusion part is is Oracle has sucked in 2.75 + 537 = 3.5 GB
- is the OS using only 500 megs ?
Does free -t , top vmstat commands show the right numbers after this
change in the kernel ?
BTW : both the free -t outputs are from diff nodes - I put them to
compare and see where am I going wrong here.
Thanks for your help..
Ketan
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