Page faults on OS Post: 302902803

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Operating Systems Solaris Page faults on OS Post 302902803 by cnamejj on Thursday 22nd of May 2014 10:47:10 AM

05-22-2014

Registered User

You probably already know this, but just in case... Paging and swapping are not the same thing and your OS could be doing one or both.

As for finding out what's going on in more detail, I'd recommend running "sar" for a few minutes to see what's going on. I don't have access to Solaris anymore so I can't be 100% certain which flags to specify to get paging or swapping related info. So try "man sar" to find the options that look interesting on your system.

But here's an example of what I'm talking about from my Ubuntu system showing paging, swapping, and some general memory activity.

Code:

$ sar -B 5 3
Linux 3.2.0-24-generic (nowhere)     05/22/2014     _x86_64_    (8 CPU)

07:42:45 AM  pgpgin/s pgpgout/s   fault/s  majflt/s  pgfree/s pgscank/s pgscand/s pgsteal/s    %vmeff
07:42:50 AM      0.00     18.40   1128.00      0.00    717.80      0.00      0.00      0.00      0.00
07:42:55 AM      0.00     24.00   1201.40      0.00   4548.00      0.00      0.00      0.00      0.00
07:43:00 AM      0.00     32.00    465.60      0.00    548.20      0.00      0.00      0.00      0.00
Average:         0.00     24.80    931.67      0.00   1938.00      0.00      0.00      0.00      0.00

$ sar -W 5 3
Linux 3.2.0-24-generic (nowhere)     05/22/2014     _x86_64_    (8 CPU)

07:45:23 AM  pswpin/s pswpout/s
07:45:28 AM      0.00      0.00
07:45:33 AM      0.00      0.00
07:45:38 AM      0.00      0.00
Average:         0.00      0.00

$ sar -R 5 3
Linux 3.2.0-24-generic (nowhere)     05/22/2014     _x86_64_    (8 CPU)

07:46:07 AM   frmpg/s   bufpg/s   campg/s
07:46:12 AM    -87.20      0.00      0.40
07:46:17 AM    -51.40      0.00      0.00
07:46:22 AM    -23.00      0.00     -0.20
Average:       -53.87      0.00      0.07

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LEARN ABOUT BSD

install-solaris

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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