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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. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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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 |
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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 |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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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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#include <sys/types.h> |
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#include <sys/mount.h> |
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#include <sys/signal.h> |
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#include <sys/sched.h> |
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#include <sys/sysctl.h> |
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#include <sys/time.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#include <paths.h> |
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#include "systat.h" |
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#include "dkstats.h" |
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extern struct _disk cur, last; |
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struct bcachestats bclast, bccur; |
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static double etime; |
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void showtotal(void); |
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void showdrive(int); |
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void print_io(void); |
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int read_io(void); |
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int select_io(void); |
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void showbcache(void); |
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#define ATIME(x,y) ((double)x[y].tv_sec + \ |
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((double)x[y].tv_usec / (double)1000000)) |
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field_def fields_io[] = { |
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{"DEVICE", 8, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, |
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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}, |
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{"WTPS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"SEC", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"", 8, 19, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"STATS", 12, 15, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0} |
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}; |
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#define FLD_IO_DEVICE FIELD_ADDR(fields_io,0) |
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#define FLD_IO_READ FIELD_ADDR(fields_io,1) |
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#define FLD_IO_WRITE FIELD_ADDR(fields_io,2) |
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#define FLD_IO_RTPS FIELD_ADDR(fields_io,3) |
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#define FLD_IO_WTPS FIELD_ADDR(fields_io,4) |
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#define FLD_IO_SEC FIELD_ADDR(fields_io,5) |
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/* This is a hack that stuffs bcache statistics to the last two columns! */ |
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#define FLD_IO_SVAL FIELD_ADDR(fields_io,6) |
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#define FLD_IO_SSTR FIELD_ADDR(fields_io,7) |
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/* Define views */ |
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field_def *view_io_0[] = { |
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FLD_IO_DEVICE, FLD_IO_READ, FLD_IO_WRITE, FLD_IO_RTPS, |
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FLD_IO_WTPS, FLD_IO_SEC, FLD_IO_SVAL, FLD_IO_SSTR, NULL |
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}; |
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/* Define view managers */ |
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struct view_manager iostat_mgr = { |
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"Iostat", select_io, read_io, NULL, print_header, |
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print_io, keyboard_callback, NULL, NULL |
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}; |
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field_view views_io[] = { |
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{view_io_0, "iostat", '2', &iostat_mgr}, |
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{NULL, NULL, 0, NULL} |
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}; |
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int |
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select_io(void) |
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{ |
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num_disp = cur.dk_ndrive + 1; |
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return (0); |
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} |
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int |
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read_io(void) |
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{ |
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int mib[3]; |
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size_t size; |
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dkreadstats(); |
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dkswap(); |
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num_disp = cur.dk_ndrive + 1; |
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bclast = bccur; |
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mib[0] = CTL_VFS; |
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mib[1] = VFS_GENERIC; |
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mib[2] = VFS_BCACHESTAT; |
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size = sizeof(bccur); |
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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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if (bclast.numbufs == 0) |
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bclast = bccur; |
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return 0; |
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} |
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void |
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print_io(void) |
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{ |
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int n, count = 0; |
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int curr; |
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etime = naptime; |
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/* XXX engine internals: save and restore curr_line for bcache */ |
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curr = curr_line; |
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for (n = dispstart; n < num_disp - 1; n++) { |
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showdrive(n); |
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count++; |
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if (maxprint > 0 && count >= maxprint) |
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break; |
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} |
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if (maxprint == 0 || count < maxprint) |
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showtotal(); |
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curr_line = curr; |
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showbcache(); |
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} |
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int |
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initiostat(void) |
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{ |
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field_view *v; |
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dkinit(1); |
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dkreadstats(); |
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bzero(&bccur, sizeof(bccur)); |
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for (v = views_io; v->name != NULL; v++) |
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add_view(v); |
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return(1); |
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} |
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void |
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showtotal(void) |
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{ |
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double rsum, wsum, rtsum, wtsum, mssum; |
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int dn; |
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rsum = wsum = rtsum = wtsum = mssum = 0.0; |
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for (dn = 0; dn < cur.dk_ndrive; dn++) { |
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rsum += cur.dk_rbytes[dn] / etime; |
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wsum += cur.dk_wbytes[dn] / etime; |
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rtsum += cur.dk_rxfer[dn] / etime; |
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wtsum += cur.dk_wxfer[dn] / etime; |
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mssum += ATIME(cur.dk_time, dn) / etime; |
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} |
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print_fld_str(FLD_IO_DEVICE, "Totals"); |
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print_fld_size(FLD_IO_READ, rsum); |
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print_fld_size(FLD_IO_WRITE, wsum); |
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print_fld_size(FLD_IO_RTPS, rtsum); |
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print_fld_size(FLD_IO_WTPS, wtsum); |
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print_fld_float(FLD_IO_SEC, mssum, 1); |
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end_line(); |
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} |
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void |
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showdrive(int dn) |
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{ |
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print_fld_str(FLD_IO_DEVICE, cur.dk_name[dn]); |
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print_fld_size(FLD_IO_READ, cur.dk_rbytes[dn]/etime); |
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print_fld_size(FLD_IO_WRITE, cur.dk_wbytes[dn]/ etime); |
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print_fld_size(FLD_IO_RTPS, cur.dk_rxfer[dn] / etime); |
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print_fld_size(FLD_IO_WTPS, cur.dk_wxfer[dn] / etime); |
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print_fld_float(FLD_IO_SEC, ATIME(cur.dk_time, dn) / etime, 1); |
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end_line(); |
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} |
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void |
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showbcache(void) |
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{ |
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print_fld_str(FLD_IO_SSTR, "total pages"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.numbufpages); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "dma pages"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.dmapages); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "dirty pages"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.numdirtypages); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "delwri bufs"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.delwribufs); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "busymap bufs"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.busymapped); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "avail kvaslots"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.kvaslots_avail); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "kvaslots"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.kvaslots); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "pending writes"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.pendingwrites); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "pending reads"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.pendingreads); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "cache hits"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.cachehits - bclast.cachehits); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "high flips"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.highflips - bclast.highflips); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "high flops"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.highflops - bclast.highflops); |
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end_line(); |
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print_fld_str(FLD_IO_SSTR, "dma flips"); |
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print_fld_ssize(FLD_IO_SVAL, bccur.dmaflips - bclast.dmaflips); |
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end_line(); |
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} |