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Full Discussion: AIX 7.1 high page faults
Operating Systems AIX AIX 7.1 high page faults Post 302735335 by MichaelFelt on Saturday 24th of November 2012 11:30:15 AM
Old 11-24-2012
Code:
462190 page ins
6958561 page outs
...
856457822 zero filled pages faults

There is very little physical paging activity. What is happening a lot is the application is using memory for the first time and/or doing malloc.

Also, when physical i/o activity is taking place, you are writing 14x for each read
Code:
6958561/462190 (pages out / pages in)

Your high number is just showing what I hope is normal startup activity. You have lots of memory free - so file caching is easy (also explains why writes dominate read activity)

Last edited by MichaelFelt; 11-24-2012 at 12:35 PM.. Reason: correct layout of pasted data
 

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pfm_enable_faults(3ncs) 												   pfm_enable_faults(3ncs)

Name
       pfm_enable_faults - enable asynchronous faults

Syntax
       #include <idl/c/base.h>
       #include <idl/c/pfm.h>

       void pfm_$enable_faults()

Description
       The routine enables asynchronous faults after they have been inhibited by a call to causes the operating system to pass asynchronous faults
       on to the calling process.

       While faults are inhibited, the operating system holds at most one asynchronous fault.  Consequently, when returns, there can  be  at  most
       one  fault waiting on the process.  If more than one fault was received between routines to and the process receives the first asynchronous
       fault received while faults were inhibited.

Diagnostics
       This section lists the status codes for errors returned by this routine.

       pfm_$bad_rls_order  Attempted to release a clean-up handler out of order.

       pfm_$cleanup_not_found
			   There is no pending clean-up handler.

       pfm_$cleanup_set    A clean-up handler was established successfully.

       pfm_$cleanup_set_signalled
			   Attempted to use pfm_$cleanup_set as a signal.

       pfm_$invalid_cleanup_rec
			   Passed an invalid clean-up record to a routine.

       pfm_$no_space	   Cannot allocate storage for a clean-up handler.

Files
See Also
       intro(3ncs), pfm_enable(3ncs), pfm_inhibit_faults(3ncs)

															   pfm_enable_faults(3ncs)
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