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    /*	$OpenBSD: iostat.c,v 1.47 2017/04/16 14:24:03 beck Exp $	*/  | 
    
    
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    /*	$NetBSD: iostat.c,v 1.5 1996/05/10 23:16:35 thorpej Exp $	*/  | 
    
    
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    /*  | 
    
    
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     * Copyright (c) 1980, 1992, 1993  | 
    
    
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     *	The Regents of the University of California.  All rights reserved.  | 
    
    
    7  | 
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     *  | 
    
    
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     * Redistribution and use in source and binary forms, with or without  | 
    
    
    9  | 
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     * modification, are permitted provided that the following conditions  | 
    
    
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     * are met:  | 
    
    
    11  | 
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     * 1. Redistributions of source code must retain the above copyright  | 
    
    
    12  | 
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     *    notice, this list of conditions and the following disclaimer.  | 
    
    
    13  | 
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     * 2. Redistributions in binary form must reproduce the above copyright  | 
    
    
    14  | 
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     *    notice, this list of conditions and the following disclaimer in the  | 
    
    
    15  | 
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     *    documentation and/or other materials provided with the distribution.  | 
    
    
    16  | 
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     * 3. Neither the name of the University nor the names of its contributors  | 
    
    
    17  | 
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     *    may be used to endorse or promote products derived from this software  | 
    
    
    18  | 
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     *    without specific prior written permission.  | 
    
    
    19  | 
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     *  | 
    
    
    20  | 
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     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND  | 
    
    
    21  | 
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     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  | 
    
    
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     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  | 
    
    
    23  | 
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     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE  | 
    
    
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     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL  | 
    
    
    25  | 
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     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS  | 
    
    
    26  | 
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     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  | 
    
    
    27  | 
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     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT  | 
    
    
    28  | 
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     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY  | 
    
    
    29  | 
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     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF  | 
    
    
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     * SUCH DAMAGE.  | 
    
    
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     */  | 
    
    
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    33  | 
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    #include <sys/types.h>  | 
    
    
    34  | 
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    #include <sys/mount.h>  | 
    
    
    35  | 
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    #include <sys/signal.h>  | 
    
    
    36  | 
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    #include <sys/sched.h>  | 
    
    
    37  | 
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    #include <sys/sysctl.h>  | 
    
    
    38  | 
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    #include <sys/time.h>  | 
    
    
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    #include <string.h>  | 
    
    
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    #include <stdlib.h>  | 
    
    
    42  | 
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    #include <paths.h>  | 
    
    
    43  | 
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    #include "systat.h"  | 
    
    
    44  | 
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    45  | 
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    #include "dkstats.h"  | 
    
    
    46  | 
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    extern struct _disk	cur, last;  | 
    
    
    47  | 
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    struct bcachestats	bclast, bccur;  | 
    
    
    48  | 
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    49  | 
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    static double etime;  | 
    
    
    50  | 
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    51  | 
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    void showtotal(void);  | 
    
    
    52  | 
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    void showdrive(int);  | 
    
    
    53  | 
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    void print_io(void);  | 
    
    
    54  | 
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    int read_io(void);  | 
    
    
    55  | 
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    int select_io(void);  | 
    
    
    56  | 
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    void showbcache(void);  | 
    
    
    57  | 
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    58  | 
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    #define ATIME(x,y) ((double)x[y].tv_sec + \  | 
    
    
    59  | 
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            ((double)x[y].tv_usec / (double)1000000))  | 
    
    
    60  | 
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    61  | 
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    62  | 
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    field_def fields_io[] = { | 
    
    
    63  | 
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    	{"DEVICE", 8, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, | 
    
    
    64  | 
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    	{"READ", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, | 
    
    
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    	{"WRITE", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, | 
    
    
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    	{"RTPS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, | 
    
    
    67  | 
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    	{"WTPS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, | 
    
    
    68  | 
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    	{"SEC", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, | 
    
    
    69  | 
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    	{"", 8, 19, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, | 
    
    
    70  | 
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    	{"STATS", 12, 15, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0} | 
    
    
    71  | 
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    };  | 
    
    
    72  | 
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    73  | 
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    #define FLD_IO_DEVICE	FIELD_ADDR(fields_io,0)  | 
    
    
    74  | 
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    #define FLD_IO_READ	FIELD_ADDR(fields_io,1)  | 
    
    
    75  | 
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    #define FLD_IO_WRITE	FIELD_ADDR(fields_io,2)  | 
    
    
    76  | 
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    #define FLD_IO_RTPS	FIELD_ADDR(fields_io,3)  | 
    
    
    77  | 
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    #define FLD_IO_WTPS	FIELD_ADDR(fields_io,4)  | 
    
    
    78  | 
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    #define FLD_IO_SEC	FIELD_ADDR(fields_io,5)  | 
    
    
    79  | 
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    80  | 
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    /* This is a hack that stuffs bcache statistics to the last two columns! */  | 
    
    
    81  | 
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    #define FLD_IO_SVAL	FIELD_ADDR(fields_io,6)  | 
    
    
    82  | 
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    #define FLD_IO_SSTR	FIELD_ADDR(fields_io,7)  | 
    
    
    83  | 
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    84  | 
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    /* Define views */  | 
    
    
    85  | 
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    field_def *view_io_0[] = { | 
    
    
    86  | 
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    	FLD_IO_DEVICE, FLD_IO_READ, FLD_IO_WRITE, FLD_IO_RTPS,  | 
    
    
    87  | 
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    	FLD_IO_WTPS, FLD_IO_SEC, FLD_IO_SVAL, FLD_IO_SSTR, NULL  | 
    
    
    88  | 
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    };  | 
    
    
    89  | 
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    90  | 
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    /* Define view managers */  | 
    
    
    92  | 
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    struct view_manager iostat_mgr = { | 
    
    
    93  | 
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    	"Iostat", select_io, read_io, NULL, print_header,  | 
    
    
    94  | 
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    	print_io, keyboard_callback, NULL, NULL  | 
    
    
    95  | 
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    };  | 
    
    
    96  | 
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    97  | 
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    98  | 
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    field_view views_io[] = { | 
    
    
    99  | 
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    	{view_io_0, "iostat", '2', &iostat_mgr}, | 
    
    
    100  | 
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    	{NULL, NULL, 0, NULL} | 
    
    
    101  | 
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    };  | 
    
    
    102  | 
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    103  | 
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    104  | 
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    int  | 
    
    
    105  | 
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    select_io(void)  | 
    
    
    106  | 
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    { | 
    
    
    107  | 
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    	num_disp = cur.dk_ndrive + 1;  | 
    
    
    108  | 
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    	return (0);  | 
    
    
    109  | 
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    }  | 
    
    
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    111  | 
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    int  | 
    
    
    112  | 
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    read_io(void)  | 
    
    
    113  | 
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    { | 
    
    
    114  | 
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    	int mib[3];  | 
    
    
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    	size_t size;  | 
    
    
    116  | 
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    117  | 
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    	dkreadstats();  | 
    
    
    118  | 
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    	dkswap();  | 
    
    
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    	num_disp = cur.dk_ndrive + 1;  | 
    
    
    120  | 
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    121  | 
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    	bclast = bccur;  | 
    
    
    122  | 
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    	mib[0] = CTL_VFS;  | 
    
    
    123  | 
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    	mib[1] = VFS_GENERIC;  | 
    
    
    124  | 
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    	mib[2] = VFS_BCACHESTAT;  | 
    
    
    125  | 
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    	size = sizeof(bccur);  | 
    
    
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    127  | 
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    	if (sysctl(mib, 3, &bccur, &size, NULL, 0) < 0)  | 
    
    
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    		error("cannot get vfs.bcachestat"); | 
    
    
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    130  | 
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    	if (bclast.numbufs == 0)  | 
    
    
    131  | 
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    		bclast = bccur;  | 
    
    
    132  | 
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    133  | 
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    	return 0;  | 
    
    
    134  | 
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    }  | 
    
    
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    void  | 
    
    
    138  | 
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    print_io(void)  | 
    
    
    139  | 
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    { | 
    
    
    140  | 
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    	int n, count = 0;  | 
    
    
    141  | 
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    142  | 
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    	int curr;  | 
    
    
    143  | 
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    	etime = naptime;  | 
    
    
    144  | 
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    145  | 
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    	/* XXX engine internals: save and restore curr_line for bcache */  | 
    
    
    146  | 
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    	curr = curr_line;  | 
    
    
    147  | 
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    148  | 
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    	for (n = dispstart; n < num_disp - 1; n++) { | 
    
    
    149  | 
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    		showdrive(n);  | 
    
    
    150  | 
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    		count++;  | 
    
    
    151  | 
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    		if (maxprint > 0 && count >= maxprint)  | 
    
    
    152  | 
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    			break;  | 
    
    
    153  | 
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    	}  | 
    
    
    154  | 
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    155  | 
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    156  | 
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    	if (maxprint == 0 || count < maxprint)  | 
    
    
    157  | 
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    		showtotal();  | 
    
    
    158  | 
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    159  | 
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    	curr_line = curr;  | 
    
    
    160  | 
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    	showbcache();  | 
    
    
    161  | 
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    }  | 
    
    
    162  | 
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    163  | 
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    int  | 
    
    
    164  | 
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    initiostat(void)  | 
    
    
    165  | 
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    { | 
    
    
    166  | 
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    	field_view *v;  | 
    
    
    167  | 
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    168  | 
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    	dkinit(1);  | 
    
    
    169  | 
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    	dkreadstats();  | 
    
    
    170  | 
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    171  | 
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    	bzero(&bccur, sizeof(bccur));  | 
    
    
    172  | 
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    173  | 
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    	for (v = views_io; v->name != NULL; v++)  | 
    
    
    174  | 
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    		add_view(v);  | 
    
    
    175  | 
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    176  | 
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    	return(1);  | 
    
    
    177  | 
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    }  | 
    
    
    178  | 
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    179  | 
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    void  | 
    
    
    180  | 
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    showtotal(void)  | 
    
    
    181  | 
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    { | 
    
    
    182  | 
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    	double rsum, wsum, rtsum, wtsum, mssum;  | 
    
    
    183  | 
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    	int dn;  | 
    
    
    184  | 
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    185  | 
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    	rsum = wsum = rtsum = wtsum = mssum = 0.0;  | 
    
    
    186  | 
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    187  | 
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    	for (dn = 0; dn < cur.dk_ndrive; dn++) { | 
    
    
    188  | 
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    		rsum += cur.dk_rbytes[dn] / etime;  | 
    
    
    189  | 
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    		wsum += cur.dk_wbytes[dn] / etime;  | 
    
    
    190  | 
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    		rtsum += cur.dk_rxfer[dn] / etime;  | 
    
    
    191  | 
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    		wtsum += cur.dk_wxfer[dn] / etime;  | 
    
    
    192  | 
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    		mssum += ATIME(cur.dk_time, dn) / etime;  | 
    
    
    193  | 
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    	}  | 
    
    
    194  | 
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    195  | 
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    	print_fld_str(FLD_IO_DEVICE, "Totals");  | 
    
    
    196  | 
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    	print_fld_size(FLD_IO_READ, rsum);  | 
    
    
    197  | 
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    	print_fld_size(FLD_IO_WRITE, wsum);  | 
    
    
    198  | 
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    	print_fld_size(FLD_IO_RTPS, rtsum);  | 
    
    
    199  | 
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    	print_fld_size(FLD_IO_WTPS, wtsum);  | 
    
    
    200  | 
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    	print_fld_float(FLD_IO_SEC, mssum, 1);  | 
    
    
    201  | 
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    202  | 
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    	end_line();  | 
    
    
    203  | 
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    }  | 
    
    
    204  | 
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    205  | 
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    void  | 
    
    
    206  | 
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    showdrive(int dn)  | 
    
    
    207  | 
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    { | 
    
    
    208  | 
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    	print_fld_str(FLD_IO_DEVICE, cur.dk_name[dn]);  | 
    
    
    209  | 
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    	print_fld_size(FLD_IO_READ, cur.dk_rbytes[dn]/etime);  | 
    
    
    210  | 
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    	print_fld_size(FLD_IO_WRITE, cur.dk_wbytes[dn]/ etime);  | 
    
    
    211  | 
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    	print_fld_size(FLD_IO_RTPS, cur.dk_rxfer[dn] / etime);  | 
    
    
    212  | 
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    	print_fld_size(FLD_IO_WTPS, cur.dk_wxfer[dn] / etime);  | 
    
    
    213  | 
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    	print_fld_float(FLD_IO_SEC, ATIME(cur.dk_time, dn) / etime, 1);  | 
    
    
    214  | 
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    215  | 
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    	end_line();  | 
    
    
    216  | 
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    }  | 
    
    
    217  | 
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    218  | 
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    void  | 
    
    
    219  | 
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    showbcache(void)  | 
    
    
    220  | 
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    { | 
    
    
    221  | 
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    	print_fld_str(FLD_IO_SSTR, "total pages");  | 
    
    
    222  | 
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    	print_fld_ssize(FLD_IO_SVAL, bccur.numbufpages);  | 
    
    
    223  | 
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    	end_line();  | 
    
    
    224  | 
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    225  | 
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    	print_fld_str(FLD_IO_SSTR, "dma pages");  | 
    
    
    226  | 
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    	print_fld_ssize(FLD_IO_SVAL, bccur.dmapages);  | 
    
    
    227  | 
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    	end_line();  | 
    
    
    228  | 
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    229  | 
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    	print_fld_str(FLD_IO_SSTR, "dirty pages");  | 
    
    
    230  | 
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    	print_fld_ssize(FLD_IO_SVAL, bccur.numdirtypages);  | 
    
    
    231  | 
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    	end_line();  | 
    
    
    232  | 
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    233  | 
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    	print_fld_str(FLD_IO_SSTR, "delwri bufs");  | 
    
    
    234  | 
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    	print_fld_ssize(FLD_IO_SVAL, bccur.delwribufs);  | 
    
    
    235  | 
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    	end_line();  | 
    
    
    236  | 
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    237  | 
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    	print_fld_str(FLD_IO_SSTR, "busymap bufs");  | 
    
    
    238  | 
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    	print_fld_ssize(FLD_IO_SVAL, bccur.busymapped);  | 
    
    
    239  | 
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    	end_line();  | 
    
    
    240  | 
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    241  | 
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    	print_fld_str(FLD_IO_SSTR, "avail kvaslots");  | 
    
    
    242  | 
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    	print_fld_ssize(FLD_IO_SVAL, bccur.kvaslots_avail);  | 
    
    
    243  | 
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    	end_line();  | 
    
    
    244  | 
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    245  | 
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    	print_fld_str(FLD_IO_SSTR, "kvaslots");  | 
    
    
    246  | 
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    	print_fld_ssize(FLD_IO_SVAL, bccur.kvaslots);  | 
    
    
    247  | 
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    	end_line();  | 
    
    
    248  | 
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    249  | 
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    	print_fld_str(FLD_IO_SSTR, "pending writes");  | 
    
    
    250  | 
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    	print_fld_ssize(FLD_IO_SVAL, bccur.pendingwrites);  | 
    
    
    251  | 
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    	end_line();  | 
    
    
    252  | 
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    253  | 
     | 
     | 
    	print_fld_str(FLD_IO_SSTR, "pending reads");  | 
    
    
    254  | 
     | 
     | 
    	print_fld_ssize(FLD_IO_SVAL, bccur.pendingreads);  | 
    
    
    255  | 
     | 
     | 
    	end_line();  | 
    
    
    256  | 
     | 
     | 
     | 
    
    
    257  | 
     | 
     | 
    	print_fld_str(FLD_IO_SSTR, "cache hits");  | 
    
    
    258  | 
     | 
     | 
    	print_fld_ssize(FLD_IO_SVAL, bccur.cachehits - bclast.cachehits);  | 
    
    
    259  | 
     | 
     | 
    	end_line();  | 
    
    
    260  | 
     | 
     | 
     | 
    
    
    261  | 
     | 
     | 
    	print_fld_str(FLD_IO_SSTR, "high flips");  | 
    
    
    262  | 
     | 
     | 
    	print_fld_ssize(FLD_IO_SVAL, bccur.highflips - bclast.highflips);  | 
    
    
    263  | 
     | 
     | 
    	end_line();  | 
    
    
    264  | 
     | 
     | 
     | 
    
    
    265  | 
     | 
     | 
    	print_fld_str(FLD_IO_SSTR, "high flops");  | 
    
    
    266  | 
     | 
     | 
    	print_fld_ssize(FLD_IO_SVAL, bccur.highflops - bclast.highflops);  | 
    
    
    267  | 
     | 
     | 
    	end_line();  | 
    
    
    268  | 
     | 
     | 
     | 
    
    
    269  | 
     | 
     | 
    	print_fld_str(FLD_IO_SSTR, "dma flips");  | 
    
    
    270  | 
     | 
     | 
    	print_fld_ssize(FLD_IO_SVAL, bccur.dmaflips - bclast.dmaflips);  | 
    
    
    271  | 
     | 
     | 
    	end_line();  | 
    
    
    272  | 
     | 
     | 
    }  |