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New flag -u to suppress functions whose name does not begin with an
underscore. Use it to avoid seeing badsw when profiling the kernel. Print times more accurately (e.g. usec in %8.0f format instead of msec in %8.2f format for averages) if hz >= 10000. This should have no effect now since profhz is only 1024.
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=2513
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@ -91,8 +91,8 @@ Second, a flat profile is given,
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similar to that provided by
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.Xr prof 1 .
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This listing gives the total execution times, the call counts,
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the time in milleseconds the call spent in the routine itself, and
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the time in milleseconds the call spent in the routine itself including
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the time in msec or usec the call spent in the routine itself, and
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the time in msec or usec the call spent in the routine itself including
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its descendents.
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.Pp
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Finally, an index of the function names is provided.
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@ -205,6 +205,13 @@ executions of gprof (probably also with a
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to accumulate profile data across several runs of an
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.Pa a.out
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file.
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.It Fl u
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Suppresses the printing of functions whose name does not begin with
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an underscore.
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All relevant information about such functions belongs to the
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(non-suppressed) function with the next lowest address.
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This is useful for eliminating "functions" that are just labels
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inside other functions.
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.It Fl z
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Displays routines that have zero usage (as shown by call counts
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and accumulated time).
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@ -51,6 +51,7 @@ char *whoami = "gprof";
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char *defaultEs[] = { "mcount" , "__mcleanup" , 0 };
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static struct gmonhdr gmonhdr;
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static bool uflag;
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main(argc, argv)
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int argc;
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@ -125,6 +126,9 @@ main(argc, argv)
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case 's':
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sflag = TRUE;
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break;
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case 'u':
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uflag = TRUE;
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break;
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case 'z':
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zflag = TRUE;
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break;
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@ -704,8 +708,6 @@ bool
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funcsymbol( nlistp )
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struct nlist *nlistp;
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{
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extern char *strtab; /* string table from a.out */
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extern int aflag; /* if static functions aren't desired */
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char *name, c;
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/*
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@ -717,6 +719,7 @@ funcsymbol( nlistp )
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return FALSE;
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}
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/*
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* name must start with an underscore if uflag is set.
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* can't have any `funny' characters in name,
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* where `funny' includes `.', .o file names
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* and `$', pascal labels.
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@ -724,6 +727,8 @@ funcsymbol( nlistp )
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* perhaps we should just drop this code entirely...
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*/
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name = strtab + nlistp -> n_un.n_strx;
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if ( uflag && *name != '_' )
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return FALSE;
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#ifdef sparc
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if ( *name == '.' ) {
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char *p = name + 1;
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@ -110,7 +110,8 @@ flatprofheader()
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"% " , "cumulative" , "self " , "" , "self " , "total " , "" );
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printf( "%5.5s %10.10s %8.8s %8.8s %8.8s %8.8s %-8.8s\n" ,
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"time" , "seconds " , "seconds" , "calls" ,
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"ms/call" , "ms/call" , "name" );
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hz >= 10000 ? "us/call" : "ms/call" ,
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hz >= 10000 ? "us/call" : "ms/call" , "name" );
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}
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flatprofline( np )
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@ -121,12 +122,21 @@ flatprofline( np )
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return;
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}
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actime += np -> time;
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printf( "%5.1f %10.2f %8.2f" ,
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100 * np -> time / totime , actime / hz , np -> time / hz );
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if (hz >= 10000)
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printf( "%5.1f %10.3f %8.3f" ,
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100 * np -> time / totime , actime / hz , np -> time / hz );
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else
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printf( "%5.1f %10.2f %8.2f" ,
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100 * np -> time / totime , actime / hz , np -> time / hz );
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if ( np -> ncall != 0 ) {
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printf( " %8d %8.2f %8.2f " , np -> ncall ,
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1000 * np -> time / hz / np -> ncall ,
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1000 * ( np -> time + np -> childtime ) / hz / np -> ncall );
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if (hz >= 10000)
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printf( " %8d %8.0f %8.0f " , np -> ncall ,
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1e6 * np -> time / hz / np -> ncall ,
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1e6 * ( np -> time + np -> childtime ) / hz / np -> ncall );
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else
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printf( " %8d %8.2f %8.2f " , np -> ncall ,
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1000 * np -> time / hz / np -> ncall ,
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1000 * ( np -> time + np -> childtime ) / hz / np -> ncall );
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} else {
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printf( " %8.8s %8.8s %8.8s " , "" , "" , "" );
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}
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