OS Version: SunOS <hostname> 5.10 Generic_142900-13 sun4v sparc SUNW,Sun-Blade-T6340
I need some expert guidance on investigating memory usage on Solaris. I want to know whether am interpreting the output from ps -efl correctly and whether the command top is showing the right information or not. Details of the problem is as below:
- top command reported free memory from this server is at 226MB out of 7968M reported. A bit worried that the server may run out of memory and start swapping. So far, for a week now, top reports no swapping so not that worried at this stage.
- The top command memory usage per PID does not seems correct and is exceeding the 7968M available RAM, so we used ps -efl instead and the SZ column from running that ps command seems to match with the reported memory usage.
- From the ps -efl output, the memory usage seems to be constant at 115M more or less, is there a server/kernel/database setting that sets minimum memory usage to start at 115M per process? This seem to be the case for oracle processes but can't find anything on the database settings that suggest this is getting set in the database ...
- Any advise on how to troubleshoot this problem will be very much appreciated. Thanks in advance.
Several useful output information can be found below:
Output from "echo ::memstat | mdb -k" as below. I am hoping I can match up the output below with the ps -efl output somehow but not sure how to do that.
The server is used by a third-party application using JAVA and is also used as an Oracle database server. - ps -efl output from application connections as below. Based on the ps man pages, the SZ column is the memory usage in KB, is that correct, so that means from the output below the first process below is using 115005KB, roughly 115MB of memory, is that correct?
- ps -efl output for Oracle database processes as below. I assume I can't control the memory usage on these processes as they are spawned by Oracle.
- Excerpts from top ordered by SIZE. The output seems doubtful. From the output below, it shows each oracle PID consuming 800M of memory and I only have 7968M, how come? Should I discard these information and rely on the output from ps -efl then which seems to be the correct one?
- ps -efl output from Non oracle processes as below:
in unix when i use top
i get an output like this:
load averages: 0.64, 0.57, 0.53 14:04:42
347 processes: 1 running, 1 waiting, 169 sleeping, 172 idle, 4 stopped
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Hello all
im working on sunos machine that dont have the top installed and can't be
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Details
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