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тАО02-14-2010 09:32 PM
тАО02-14-2010 09:32 PM
Memory Bug on 11.31 ?
One of my HPUX 11.31 server showing system is utilising 35% of physical memory .Pls check and let me know any finetuning can be done on this
Physical memory = 12570438 48.0g 100%
Free memory = 1343227 5.1g 11%
User processes = 6644210 25.3g 53% details with -user
System = 4434015 16.9g 35%
Kernel = 3362891 12.8g 27% kernel text and data
Dynamic Arenas = 2218064 8.5g 18% details with -arena
btree_chunk_are = 1488739 5.7g 12%
regrds
trng
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тАО02-14-2010 10:40 PM
тАО02-14-2010 10:40 PM
Re: Memory Bug on 11.31 ?
What are your file cache kernel parms?
Are you up to date with patches?
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тАО02-15-2010 01:15 AM
тАО02-15-2010 01:15 AM
Re: Memory Bug on 11.31 ?
File Cache = 1046962 4.0g 8%
# swapinfo -tam
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 49152 0 49152 0% 0 - 1 /dev/vg00/lvol2
dev 52224 0 52224 0% 0 - 1 /dev/vg05/swapsec
reserve - 34560 -34560
memory 46706 13200 33506 28%
total 148082 47760 100322 32% - 0 -
My server is updated with latest Quality pack patch bundle and latest VM cumulative patches .
How can we reduce this 35% mory used by system.what is btree_chunk_are and why it is using 12% ?.
Application and Database team said ,nothing can be possible from their end .
rgds
trng
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тАО02-15-2010 01:59 AM
тАО02-15-2010 01:59 AM
Re: Memory Bug on 11.31 ?
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тАО02-15-2010 01:33 PM
тАО02-15-2010 01:33 PM
Re: Memory Bug on 11.31 ?
Why are you concerned? At 35% utilization you your memory you have ample space to use more file cache or database buffers. Having a little extra memory available potentially gives you the opportunity to improve performance.
Also, as noted, if there is no memory pressure, the tendency will be for objects to remain memory resident.
Regards!
...JRF...
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тАО02-16-2010 12:04 AM
тАО02-16-2010 12:04 AM
Re: Memory Bug on 11.31 ?
my machine memory utilisation now is 94% and 35% used by system alone and rest is avl to users.I am etting continous alert from HP-OVO saying memory reached above threshold(90%).i need to reduce the utilisation below threshold .I dont think a machine is using 35% memory for system alone is not normal behavious at all
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тАО02-16-2010 07:21 AM
тАО02-16-2010 07:21 AM
Re: Memory Bug on 11.31 ?
Why? You want 100% utilization.
>I don't think a machine is using 35% memory for system alone is not normal behavior at all
As JRF said, if you start using more memory the system part will decrease.
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тАО04-21-2010 10:32 PM
тАО04-21-2010 10:32 PM
Re: Memory Bug on 11.31 ?
I agreed system memory will realese once user process required more memory.But most of the reporting tools (HP OV ,compuware etc etc) are taking total memory utilisation only and generating an alert saying memory is above threshold .if 11.31 memory behaviour is like this ,how can we set a memory threshold in monitoring tools ?...
rgds