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+'\"macro stdmacro
+.\"
+.\" Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved.
+.\" 
+.\" This program is free software; you can redistribute it and/or modify it
+.\" under the terms of the GNU General Public License as published by the
+.\" Free Software Foundation; either version 2 of the License, or (at your
+.\" option) any later version.
+.\" 
+.\" This program is distributed in the hope that it will be useful, but
+.\" WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+.\" or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+.\" for more details.
+.\" 
+.\"
+.TH PMSORTINSTANCES 3 "PCP" "Performance Co-Pilot"
+.SH NAME
+\f3pmSortInstances\f1 \- sort performance metric values on instance identifier
+.SH "C SYNOPSIS"
+.ft 3
+#include <pcp/pmapi.h>
+.sp
+void pmSortInstances(pmResult *\fIresult\fP);
+.sp
+cc ... \-lpcp
+.ft 1
+.SH DESCRIPTION
+.de CW
+.ie t \f(CW\\$1\f1\\$2
+.el \fI\\$1\f1\\$2
+..
+.PP
+The routine
+.B pmSortInstances
+may be used to guarantee that for each performance metric in the
+.I result
+from
+.BR pmFetch (3),
+the instances are in ascending instance identifier sequence.
+.PP
+This is most useful when trying to compute rates from two consecutive
+.BR pmFetch (3)
+results.
+.SH SEE ALSO
+.BR PMAPI (3)
+and
+.BR pmFetch (3).
+.SH DIAGNOSTICS
+None.