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Operating Systems Solaris HELP - memory usage on Solaris : ps -efl and top Post 302449466 by jlliagre on Monday 30th of August 2010 04:33:30 PM
Old 08-30-2010
Quote:
Originally Posted by newbie_01

- 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.
"top" isn't part of the OS. It is known to report confusing data as it doesn't use always the same terminology as Solaris does. Better to avoid it and use prstat, vmstat, "swap -s" and the likes.
Quote:
- 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 ... Smilie
There is hopefully no minimum memory usage kernel tuning per process. I would guess this is simply due to shared memory accounted to each process.
Quote:
- Any advise on how to troubleshoot this problem will be very much appreciated. Thanks in advance.
What problem do you want to troubleshoot ? You tell there is no swapping reported so IMHO nothing to fix. You have plenty of available memory (most of the ZFS file data is available to applications should they need it) and anyway, unused memory is wasted memory.
 

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install-solaris(1M)													       install-solaris(1M)

NAME
install-solaris - install the Solaris operating system SYNOPSIS
install-solaris install-solaris invokes the Solaris Install program. Depending on graphical capability and available memory at the time of invocation, install-solaris invokes either a text-based installer or a graphical installer. The following minimum requirements for physical memory dictate which features are available during installation: For SPARC machines: 128 MB Minimum physical memory for all installation types 128 MB Minimum physical memory required for windowing system 384 MB Minimum physical memory required for graphical-based installation For x86 machines: 256 MB Minimum physical memory for all installation types 256 MB Minimum physical memory required for windowing system 512 MB Minimum physical memory required for graphical-based installation In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number of fea- tures available. install-solaris exists only on the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the for more details. install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the installation media. Refer to the for disk space requirements. Refer to the for more information on the various menus and selections. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcdrom (Solaris instal- | | |lation media) | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ pkginfo(1), install(1M), pkgadd(1M), attributes(5) It is advisable to exit install-solaris by means of the exit options in the install-solaris menus. 23 Sep 2005 install-solaris(1M)
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