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тАО02-14-2010 03:54 AM
тАО02-14-2010 03:54 AM
I want to know reason why swap utilization is so high? could you please more clear on output of swapinfo command?
what is reserve?
please see the attachemet and suggest how can i reduce swap utilization.
Solved! Go to Solution.
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тАО02-14-2010 04:03 AM
тАО02-14-2010 04:03 AM
Re: swap space utilization is high.
To see what is using all your swap / virtual memory:
Check with below command
$ UNIX95= ps -efo vsz,ruser,pid,ppid,args | sort -rn | more
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тАО02-14-2010 04:07 AM
тАО02-14-2010 04:07 AM
Re: swap space utilization is high.
man swapinfo
reserve = Paging space on reserve. This is the amount of paging space that could be needed by processes.
>>please see the attachemet and suggest how can i reduce swap utilization<<
I would suggest , to check which process eating all you swap ,
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тАО02-14-2010 04:11 AM
тАО02-14-2010 04:11 AM
Re: swap space utilization is high.
I suggest you "escalte to your Application/Database team"
sometime it could also application problem causing issue.
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тАО02-14-2010 04:42 AM
тАО02-14-2010 04:42 AM
Re: swap space utilization is high.
* also Check for any "Disk bottle" & shared memory load?
# ipcs -mob
-- What is the shared memory load?
# sar -d 5 50
-- What is the disk I/O load?
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тАО02-14-2010 04:45 AM
тАО02-14-2010 04:45 AM
SolutionHow to assign points check the below link
http://forums13.itrc.hp.com/service/forums/helptips.do?admit=109447627+1256027208667+28353475#33
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тАО02-14-2010 05:01 AM
тАО02-14-2010 05:01 AM
Re: swap space utilization is high.
I attached the sar and ipcs output.
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тАО02-14-2010 06:52 AM
тАО02-14-2010 06:52 AM
Re: swap space utilization is high.
IPC status from /dev/kmem as of Sun Feb 14 04:56:04 2010
T ID KEY MODE OWNER GROUP NATTCH SEGSZ
Shared Memory:
m 3375157 0x18d65c78 --rw-r----- oracle dba 286 16022274048
m 54 0x5d20b0ac --rw-r----- oracle dba 38 49341890560
m 294967 0x85fc3a38 --rw-r----- oracle dba 263 127423201280
m 98360 0x929b2b8c --rw-r----- oracle dba 141 11525971968
Looks like you have 4 (oracle) DB instances on the server you got "ipcs -mod"
How much RAM do you have on this particular server and how much SWAP?
swapinfo -mat
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тАО02-14-2010 07:06 AM
тАО02-14-2010 07:06 AM
Re: swap space utilization is high.
It may be also well be your RAM is not sufficient for the Oracle load running ?
can you also check VM starvation by paying attention for "sr"
vmstat 5
sr = pages scanned by clock algorithm
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тАО02-14-2010 07:10 AM
тАО02-14-2010 07:10 AM
Re: swap space utilization is high.
Check the below thread.
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=99729