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deviate.c
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deviate.c
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/*
** ATOP - System & Process Monitor
**
** The program 'atop' offers the possibility to view the activity of
** the system on system-level as well as process-level.
**
** This source-file contains functions to calculate the differences for
** the system-level and process-level counters since the previous sample.
** ==========================================================================
** Author: Gerlof Langeveld
** E-mail: [email protected]
** Date: November 1996
** LINUX-port: June 2000
** --------------------------------------------------------------------------
** Copyright (C) 2000-2010 Gerlof Langeveld
**
** 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, 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.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
** --------------------------------------------------------------------------
**
** $Log: deviate.c,v $
** Revision 1.45 2010/10/23 14:02:03 gerlof
** Show counters for total number of running and sleep (S and D) threads.
**
** Revision 1.44 2010/05/18 19:19:43 gerlof
** Introduce CPU frequency and scaling (JC van Winkel).
**
** Revision 1.43 2010/04/23 12:19:35 gerlof
** Modified mail-address in header.
**
** Revision 1.42 2010/03/04 10:52:08 gerlof
** Support I/O-statistics on logical volumes and MD devices.
**
** Revision 1.41 2009/12/31 11:34:21 gerlof
** Sanity-check to bypass kernel-bug showing 497 days of CPU-consumption.
**
** Revision 1.40 2009/12/17 11:58:25 gerlof
** Gather and display new counters: dirty cache and guest cpu usage.
**
** Revision 1.39 2008/02/25 14:51:18 gerlof
** Experimental code for HTTP-statistics.
**
** Revision 1.38 2008/01/07 11:33:43 gerlof
** Cosmetic changes.
**
** Revision 1.37 2008/01/07 10:17:24 gerlof
** Implement possibility to make summaries.
**
** Revision 1.36 2007/11/05 12:13:16 gerlof
** Match processes not only on pid, but also on start time.
**
** Revision 1.35 2007/11/05 11:42:47 gerlof
** Bug-solution for new-process indicator on 64-bits machines.
**
** Revision 1.34 2007/08/17 09:44:59 gerlof
** Experimental: gather info about HTTP statistics.
**
** Revision 1.33 2007/08/16 11:59:32 gerlof
** Add support for atopsar reporting.
** Concerns addition of lots of counters.
**
** Revision 1.32 2007/07/03 09:01:07 gerlof
** Support Apache-statistics.
**
** Revision 1.31 2007/03/20 13:02:03 gerlof
** Introduction of variable supportflags.
**
** Revision 1.30 2007/03/20 11:18:57 gerlof
** Add counter for cancelled writes.
**
** Revision 1.29 2007/02/13 09:21:04 gerlof
** Removed external declarations.
**
** Revision 1.28 2007/01/22 08:28:18 gerlof
** Support steal-time from /proc/stat.
**
** Revision 1.27 2007/01/18 10:43:18 gerlof
** Support for network-interface busy-percentage (speed and duplex).
**
** Revision 1.26 2006/11/13 13:47:26 gerlof
** Implement load-average counters, context-switches and interrupts.
**
** Revision 1.25 2006/02/07 06:45:33 gerlof
** Removed swap-counter.
**
** Revision 1.24 2006/01/30 09:13:33 gerlof
** Extend memory counters (a.o. page scans).
**
** Revision 1.23 2005/10/31 12:45:29 gerlof
** Support account-record version 3 (used by Mandriva).
**
** Revision 1.22 2005/10/21 09:49:38 gerlof
** Per-user accumulation of resource consumption.
**
** Revision 1.21 2004/12/14 15:05:47 gerlof
** Implementation of patch-recognition for disk and network-statistics.
**
** Revision 1.20 2004/10/28 08:30:51 gerlof
** New counter: vm committed space
**
** Revision 1.19 2004/09/24 10:02:01 gerlof
** Wrong cpu-numbers for system level statistics.
**
** Revision 1.18 2004/09/02 10:49:18 gerlof
** Added sleep-average to process-info.
**
** Revision 1.17 2004/08/31 13:27:04 gerlof
** Add new info for threading.
**
** Revision 1.16 2004/05/07 05:49:40 gerlof
** *** empty log message ***
**
** Revision 1.15 2004/05/06 09:46:55 gerlof
** Ported to kernel-version 2.6.
**
** Revision 1.14 2003/07/07 09:26:33 gerlof
** Cleanup code (-Wall proof).
**
** Revision 1.13 2003/07/03 11:17:49 gerlof
** Corrected calculations for exited processes.
**
** Revision 1.12 2003/06/30 11:30:57 gerlof
** Enlarge counters to 'long long'.
**
** Revision 1.11 2003/06/24 06:21:12 gerlof
** Limit number of system resource lines.
**
** Revision 1.10 2003/01/24 14:20:16 gerlof
** If possible, also show commandline when process has exited.
**
** Revision 1.9 2002/09/16 08:58:08 gerlof
** Add indicator for newly created processes.
**
** Revision 1.8 2002/08/27 04:47:46 gerlof
** Minor comment updates.
**
** Revision 1.7 2002/07/24 11:12:20 gerlof
** Redesigned to ease porting to other UNIX-platforms.
**
** Revision 1.6 2002/07/10 04:59:37 root
** Counters pin/pout renamed to swin/swout (Linux conventions).
**
** Revision 1.5 2002/01/22 13:39:20 gerlof
** Support for number of cpu's.
**
** Revision 1.4 2001/11/22 08:33:10 gerlof
** Add priority per process.
**
** Revision 1.3 2001/11/07 09:18:22 gerlof
** Use /proc instead of /dev/kmem for process-level statistics.
**
** Revision 1.2 2001/10/03 08:58:41 gerlof
** Improved subtraction which is overflow-proof
**
** Revision 1.1 2001/10/02 10:43:23 gerlof
** Initial revision
**
*/
static const char rcsid[] = "$Id: deviate.c,v 1.45 2010/10/23 14:02:03 gerlof Exp $";
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <signal.h>
#include <time.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <memory.h>
#include <string.h>
#include "atop.h"
#include "ifprop.h"
#include "photoproc.h"
#include "photosyst.h"
#define MAX32BITVAL 0x100000000LL
/*
** calculate the process-activity during the last sample
*/
int
deviatproc(struct pstat *aproc, int npresent,
struct pstat *eproc, int nexit, int deviatonly,
struct pstat *dproc, struct sstat *dstat,
int *ntrun, int *ntslpi, int *ntslpu, int *nzombie)
{
register int c, d;
register struct pstat *curstat, *devstat;
struct pstat prestat;
struct pinfo *pinfo;
count_t totusedcpu;
/*
** needed for sanity check later on...
*/
totusedcpu = dstat->cpu.all.stime + dstat->cpu.all.utime +
dstat->cpu.all.ntime + dstat->cpu.all.itime +
dstat->cpu.all.wtime + dstat->cpu.all.Itime +
dstat->cpu.all.Stime + dstat->cpu.all.steal +
dstat->cpu.all.guest;
/*
** make new list of all processes in the process-database;
** after handling all processes, the left-overs
** should have disappeared since the previous sample
*/
pdb_makeresidue();
/*
** calculate deviations per present process
*/
*ntrun=*ntslpi=*ntslpu=*nzombie= 0;
for (c=0, d=0; c < npresent; c++)
{
char newproc = 0;
curstat = aproc+c;
if (curstat->gen.state == 'Z')
{
(*nzombie)++;
}
else
{
*ntrun += curstat->gen.nthrrun;
*ntslpi += curstat->gen.nthrslpi;
*ntslpu += curstat->gen.nthrslpu;
}
/*
** get previous figures from process-database
*/
if ( pdb_getproc(curstat->gen.pid, curstat->gen.btime, &pinfo))
{
/*
** process already present during the previous sample;
** check differences with previous sample
*/
if (deviatonly && memcmp(curstat, &pinfo->pstat,
sizeof(struct pstat)) == EQ)
continue;
/*
** differences detected, so the process was active,
** or its status or memory-occupation has changed;
** save stats from previous sample (to use for
** further calculations) and store new statistics
** in process-database
*/
prestat = pinfo->pstat; /* save old */
pinfo->pstat = *curstat; /* overwrite */
}
else
{
/*
** new process which must have been started during
** last interval
*/
memset(&prestat, 0, sizeof(prestat));
/*
** create new process
*/
pdb_newproc(&pinfo);
pinfo->pstat = *curstat;
/*
** add new process to process-database
*/
pdb_addproc( curstat->gen.pid, pinfo);
newproc = 1;
}
/*
** now do the calculations
*/
devstat = dproc+d;
devstat->gen = curstat->gen;
if (newproc)
devstat->gen.excode |= ~(INT_MAX);
devstat->cpu.nice = curstat->cpu.nice;
devstat->cpu.prio = curstat->cpu.prio;
devstat->cpu.rtprio = curstat->cpu.rtprio;
devstat->cpu.policy = curstat->cpu.policy;
devstat->cpu.curcpu = curstat->cpu.curcpu;
devstat->cpu.sleepavg = curstat->cpu.sleepavg;
devstat->cpu.stime =
subcount(curstat->cpu.stime, prestat.cpu.stime);
devstat->cpu.utime =
subcount(curstat->cpu.utime, prestat.cpu.utime);
/*
** sometimes particular kernel versions supply a smaller
** amount for consumed CPU-ticks than a previous sample;
** with unsigned calculations this results in 497 days of
** CPU-consumption so a sanity-check is needed here...
*/
if (devstat->cpu.stime > totusedcpu)
devstat->cpu.stime = 1;
if (devstat->cpu.utime > totusedcpu)
devstat->cpu.utime = 1;
/*
** do further calculations
*/
devstat->dsk.rio =
subcount(curstat->dsk.rio, prestat.dsk.rio);
devstat->dsk.rsz =
subcount(curstat->dsk.rsz, prestat.dsk.rsz);
devstat->dsk.wio =
subcount(curstat->dsk.wio, prestat.dsk.wio);
devstat->dsk.wsz =
subcount(curstat->dsk.wsz, prestat.dsk.wsz);
devstat->dsk.cwsz =
subcount(curstat->dsk.cwsz, prestat.dsk.cwsz);
devstat->mem.shtext = curstat->mem.shtext;
devstat->mem.vmem = curstat->mem.vmem;
devstat->mem.rmem = curstat->mem.rmem;
devstat->mem.vgrow = curstat->mem.vmem - prestat.mem.vmem;
devstat->mem.rgrow = curstat->mem.rmem - prestat.mem.rmem;
devstat->mem.minflt =
subcount(curstat->mem.minflt, prestat.mem.minflt);
devstat->mem.majflt =
subcount(curstat->mem.majflt, prestat.mem.majflt);
devstat->net.tcpsnd =
subcount(curstat->net.tcpsnd, prestat.net.tcpsnd);
devstat->net.tcpssz =
subcount(curstat->net.tcpssz, prestat.net.tcpssz);
devstat->net.tcprcv =
subcount(curstat->net.tcprcv, prestat.net.tcprcv);
devstat->net.tcprsz =
subcount(curstat->net.tcprsz, prestat.net.tcprsz);
devstat->net.udpsnd =
subcount(curstat->net.udpsnd, prestat.net.udpsnd);
devstat->net.udpssz =
subcount(curstat->net.udpssz, prestat.net.udpssz);
devstat->net.udprcv =
subcount(curstat->net.udprcv, prestat.net.udprcv);
devstat->net.udprsz =
subcount(curstat->net.udprsz, prestat.net.udprsz);
devstat->net.rawsnd =
subcount(curstat->net.rawsnd, prestat.net.rawsnd);
devstat->net.rawrcv =
subcount(curstat->net.rawrcv, prestat.net.rawrcv);
d++;
}
/*
** calculate deviations per exited process
*/
for (c=0; c < nexit; c++)
{
/*
** check if this process has been started AND
** finished since previous sample;
** if so, it has no use to check if there is still
** existing info present in the process-database
*/
curstat = eproc+c;
if (curstat->gen.pid) /* acctrecord contains pid? */
{
if ( pdb_getproc(curstat->gen.pid,
curstat->gen.btime, &pinfo))
prestat = pinfo->pstat;
else
memset(&prestat, 0, sizeof(prestat));
}
else
{
if ( curstat->gen.btime > pretime )
{
/*
** process-start and -finish in same interval
*/
memset(&prestat, 0, sizeof(prestat));
}
else
{
/*
** process must be known in process-database;
** try to match one of the remaining processes
** against this exited one
*/
if ( pdb_srchresidue(curstat, &pinfo) )
prestat = pinfo->pstat;
else
memset(&prestat, 0, sizeof(prestat));
}
}
/*
** now do the calculations
*/
devstat = dproc+d;
devstat->gen = curstat->gen;
if ( curstat->gen.pid == 0 )
devstat->gen.pid = prestat.gen.pid;
if (!prestat.gen.pid)
devstat->gen.excode |= ~(INT_MAX);
strcpy(devstat->gen.cmdline, prestat.gen.cmdline);
devstat->cpu.nice = 0;
devstat->cpu.prio = 0;
devstat->cpu.rtprio = 0;
devstat->cpu.policy = 0;
devstat->cpu.curcpu = 0;
devstat->cpu.sleepavg = 0;
if (supportflags & PATCHACCT)
{
devstat->net.tcpsnd = curstat->net.tcpsnd -
prestat.net.tcpsnd;
devstat->net.tcpssz = curstat->net.tcpssz -
prestat.net.tcpssz;
devstat->net.tcprcv = curstat->net.tcprcv -
prestat.net.tcprcv;
devstat->net.tcprsz = curstat->net.tcprsz -
prestat.net.tcprsz;
devstat->net.udpsnd = curstat->net.udpsnd -
prestat.net.udpsnd;
devstat->net.udpssz = curstat->net.udpssz -
prestat.net.udpssz;
devstat->net.udprcv = curstat->net.udprcv -
prestat.net.udprcv;
devstat->net.udprsz = curstat->net.udprsz -
prestat.net.udprsz;
devstat->net.rawsnd = curstat->net.rawsnd -
prestat.net.rawsnd;
devstat->net.rawrcv = curstat->net.rawrcv -
prestat.net.rawrcv;
devstat->dsk.rio = curstat->dsk.rio -
prestat.dsk.rio;
devstat->dsk.rsz = curstat->dsk.rsz -
prestat.dsk.rsz;
devstat->dsk.wio = curstat->dsk.wio -
prestat.dsk.wio;
devstat->dsk.wsz = curstat->dsk.wsz -
prestat.dsk.wsz;
devstat->dsk.cwsz = curstat->dsk.cwsz -
prestat.dsk.cwsz;
devstat->mem.vmem = 0;
devstat->mem.rmem = 0;
devstat->mem.vgrow = -curstat->mem.vmem;
devstat->mem.rgrow = -curstat->mem.rmem;
}
else
{
devstat->net.tcpsnd = 0;
devstat->net.tcpssz = 0;
devstat->net.tcprcv = 0;
devstat->net.tcprsz = 0;
devstat->net.udpsnd = 0;
devstat->net.udpssz = 0;
devstat->net.udprcv = 0;
devstat->net.udprsz = 0;
devstat->net.rawsnd = 0;
devstat->net.rawrcv = 0;
devstat->mem.vmem = 0;
devstat->mem.rmem = 0;
devstat->mem.vgrow = 0;
devstat->mem.rgrow = 0;
devstat->dsk.wio = 0;
devstat->dsk.wsz = 0;
devstat->dsk.cwsz = 0;
devstat->dsk.rsz = 0;
devstat->dsk.rio = curstat->dsk.rio -
prestat.dsk.rio -
prestat.dsk.wio;
}
devstat->cpu.stime = curstat->cpu.stime - prestat.cpu.stime;
devstat->cpu.utime = curstat->cpu.utime - prestat.cpu.utime;
devstat->mem.minflt = curstat->mem.minflt - prestat.mem.minflt;
devstat->mem.majflt = curstat->mem.majflt - prestat.mem.majflt;
devstat->mem.shtext = 0;
/*
** due to the strange exponent-type storage of values
** in the process accounting record, the resource-value
** in the exit-record might have been smaller than the
** stored value of the last registered sample; in that
** case the deviation should be set to zero
*/
if (devstat->cpu.stime < 0)
devstat->cpu.stime = 0;
if (devstat->cpu.utime < 0)
devstat->cpu.utime = 0;
if (devstat->dsk.rio < 0)
devstat->dsk.rio = 0;
if (devstat->dsk.rsz < 0)
devstat->dsk.rsz = 0;
if (devstat->dsk.wio < 0)
devstat->dsk.wio = 0;
if (devstat->dsk.wsz < 0)
devstat->dsk.wsz = 0;
if (devstat->dsk.cwsz < 0)
devstat->dsk.cwsz = 0;
if (devstat->mem.minflt < 0)
devstat->mem.minflt = 0;
if (devstat->mem.majflt < 0)
devstat->mem.majflt = 0;
if (supportflags & PATCHACCT)
{
if (devstat->net.tcpsnd < 0)
devstat->net.tcpsnd = 0;
if (devstat->net.tcprcv < 0)
devstat->net.tcprcv = 0;
if (devstat->net.udpsnd < 0)
devstat->net.udpsnd = 0;
if (devstat->net.udprcv < 0)
devstat->net.udprcv = 0;
if (devstat->net.rawsnd < 0)
devstat->net.rawsnd = 0;
if (devstat->net.rawrcv < 0)
devstat->net.rawrcv = 0;
}
d++;
if (prestat.gen.pid > 0)
pdb_delproc(prestat.gen.pid);
}
/*
** remove unused entries from RESIDUE chain
*/
pdb_cleanresidue();
return d;
}
/*
** calculate the system-activity during the last sample
*/
void
deviatsyst(struct sstat *cur, struct sstat *pre, struct sstat *dev)
{
register int i, j;
count_t *cdev, *ccur, *cpre;
dev->cpu.nrcpu = cur->cpu.nrcpu;
dev->cpu.devint = subcount(cur->cpu.devint, pre->cpu.devint);
dev->cpu.csw = subcount(cur->cpu.csw, pre->cpu.csw);
dev->cpu.nprocs = subcount(cur->cpu.nprocs, pre->cpu.nprocs);
dev->cpu.all.stime = subcount(cur->cpu.all.stime, pre->cpu.all.stime);
dev->cpu.all.utime = subcount(cur->cpu.all.utime, pre->cpu.all.utime);
dev->cpu.all.ntime = subcount(cur->cpu.all.ntime, pre->cpu.all.ntime);
dev->cpu.all.itime = subcount(cur->cpu.all.itime, pre->cpu.all.itime);
dev->cpu.all.wtime = subcount(cur->cpu.all.wtime, pre->cpu.all.wtime);
dev->cpu.all.Itime = subcount(cur->cpu.all.Itime, pre->cpu.all.Itime);
dev->cpu.all.Stime = subcount(cur->cpu.all.Stime, pre->cpu.all.Stime);
dev->cpu.all.steal = subcount(cur->cpu.all.steal, pre->cpu.all.steal);
dev->cpu.all.guest = subcount(cur->cpu.all.guest, pre->cpu.all.guest);
for (i=0; i < dev->cpu.nrcpu; i++)
{
count_t ticks;
dev->cpu.cpu[i].cpunr = cur->cpu.cpu[i].cpunr;
dev->cpu.cpu[i].stime = subcount(cur->cpu.cpu[i].stime,
pre->cpu.cpu[i].stime);
dev->cpu.cpu[i].utime = subcount(cur->cpu.cpu[i].utime,
pre->cpu.cpu[i].utime);
dev->cpu.cpu[i].ntime = subcount(cur->cpu.cpu[i].ntime,
pre->cpu.cpu[i].ntime);
dev->cpu.cpu[i].itime = subcount(cur->cpu.cpu[i].itime,
pre->cpu.cpu[i].itime);
dev->cpu.cpu[i].wtime = subcount(cur->cpu.cpu[i].wtime,
pre->cpu.cpu[i].wtime);
dev->cpu.cpu[i].Itime = subcount(cur->cpu.cpu[i].Itime,
pre->cpu.cpu[i].Itime);
dev->cpu.cpu[i].Stime = subcount(cur->cpu.cpu[i].Stime,
pre->cpu.cpu[i].Stime);
dev->cpu.cpu[i].steal = subcount(cur->cpu.cpu[i].steal,
pre->cpu.cpu[i].steal);
dev->cpu.cpu[i].guest = subcount(cur->cpu.cpu[i].guest,
pre->cpu.cpu[i].guest);
ticks = cur->cpu.cpu[i].freqcnt.ticks;
dev->cpu.cpu[i].freqcnt.maxfreq =
cur->cpu.cpu[i].freqcnt.maxfreq;
dev->cpu.cpu[i].freqcnt.cnt = ticks ?
subcount(cur->cpu.cpu[i].freqcnt.cnt,
pre->cpu.cpu[i].freqcnt.cnt)
: cur->cpu.cpu[i].freqcnt.cnt;
dev->cpu.cpu[i].freqcnt.ticks = ticks ?
subcount(cur->cpu.cpu[i].freqcnt.ticks,
pre->cpu.cpu[i].freqcnt.ticks)
: cur->cpu.cpu[i].freqcnt.ticks;
}
dev->cpu.lavg1 = cur->cpu.lavg1;
dev->cpu.lavg5 = cur->cpu.lavg5;
dev->cpu.lavg15 = cur->cpu.lavg15;
dev->mem.physmem = cur->mem.physmem;
dev->mem.freemem = cur->mem.freemem;
dev->mem.buffermem = cur->mem.buffermem;
dev->mem.slabmem = cur->mem.slabmem;
dev->mem.committed = cur->mem.committed;
dev->mem.commitlim = cur->mem.commitlim;
dev->mem.cachemem = cur->mem.cachemem;
dev->mem.cachedrt = cur->mem.cachedrt;
dev->mem.totswap = cur->mem.totswap;
dev->mem.freeswap = cur->mem.freeswap;
dev->mem.swouts = subcount(cur->mem.swouts, pre->mem.swouts);
dev->mem.swins = subcount(cur->mem.swins, pre->mem.swins);
dev->mem.pgscans = subcount(cur->mem.pgscans, pre->mem.pgscans);
dev->mem.allocstall = subcount(cur->mem.allocstall,
pre->mem.allocstall);
/*
** structures with network-related counters are considered
** as tables of frequency-counters that have to be subtracted;
** values that do not represent a frequency are corrected afterwards
*/
for (cdev = (count_t *)&dev->net.ipv4,
ccur = (count_t *)&cur->net.ipv4,
cpre = (count_t *)&pre->net.ipv4,
i = 0;
i < (sizeof dev->net.ipv4 / sizeof(count_t));
cdev++, ccur++, cpre++, i++)
*cdev = *ccur - *cpre;
dev->net.ipv4.Forwarding = cur->net.ipv4.Forwarding;
dev->net.ipv4.DefaultTTL = cur->net.ipv4.DefaultTTL;
/* ------------- */
for (cdev = (count_t *)&dev->net.icmpv4,
ccur = (count_t *)&cur->net.icmpv4,
cpre = (count_t *)&pre->net.icmpv4,
i = 0;
i < (sizeof dev->net.icmpv4 / sizeof(count_t));
cdev++, ccur++, cpre++, i++)
*cdev = *ccur - *cpre;
/* ------------- */
for (cdev = (count_t *)&dev->net.udpv4,
ccur = (count_t *)&cur->net.udpv4,
cpre = (count_t *)&pre->net.udpv4,
i = 0;
i < (sizeof dev->net.udpv4 / sizeof(count_t));
cdev++, ccur++, cpre++, i++)
*cdev = *ccur - *cpre;
/* ------------- */
for (cdev = (count_t *)&dev->net.ipv6,
ccur = (count_t *)&cur->net.ipv6,
cpre = (count_t *)&pre->net.ipv6,
i = 0;
i < (sizeof dev->net.ipv6 / sizeof(count_t));
cdev++, ccur++, cpre++, i++)
*cdev = *ccur - *cpre;
/* ------------- */
for (cdev = (count_t *)&dev->net.icmpv6,
ccur = (count_t *)&cur->net.icmpv6,
cpre = (count_t *)&pre->net.icmpv6,
i = 0;
i < (sizeof dev->net.icmpv6 / sizeof(count_t));
cdev++, ccur++, cpre++, i++)
*cdev = *ccur - *cpre;
/* ------------- */
for (cdev = (count_t *)&dev->net.udpv6,
ccur = (count_t *)&cur->net.udpv6,
cpre = (count_t *)&pre->net.udpv6,
i = 0;
i < (sizeof dev->net.udpv6 / sizeof(count_t));
cdev++, ccur++, cpre++, i++)
*cdev = *ccur - *cpre;
/* ------------- */
for (cdev = (count_t *)&dev->net.tcp,
ccur = (count_t *)&cur->net.tcp,
cpre = (count_t *)&pre->net.tcp,
i = 0;
i < (sizeof dev->net.tcp / sizeof(count_t));
cdev++, ccur++, cpre++, i++)
*cdev = *ccur - *cpre;
dev->net.tcp.RtoAlgorithm = cur->net.tcp.RtoAlgorithm;
dev->net.tcp.RtoMin = cur->net.tcp.RtoMin;
dev->net.tcp.RtoMax = cur->net.tcp.RtoMax;
dev->net.tcp.MaxConn = cur->net.tcp.MaxConn;
dev->net.tcp.CurrEstab = cur->net.tcp.CurrEstab;
/*
** calculate deviations for interfaces
*/
if (pre->intf.intf[0].name[0] == '\0') /* first sample? */
{
struct ifprop ifprop;
for (i=0; cur->intf.intf[i].name[0]; i++)
{
strcpy(pre->intf.intf[i].name, cur->intf.intf[i].name);
strcpy(ifprop.name, cur->intf.intf[i].name);
getifprop(&ifprop);
pre->intf.intf[i].speed = ifprop.speed;
pre->intf.intf[i].duplex = ifprop.fullduplex;
}
}
for (i=0; cur->intf.intf[i].name[0]; i++)
{
/*
** check if an interface has been added or removed;
** in that case, skip further handling for this sample
*/
if (strcmp(cur->intf.intf[i].name, pre->intf.intf[i].name) != 0)
{
int j;
struct ifprop ifprop;
/*
** take care that interface properties are
** corrected for future samples
*/
seteuid(0); /* get root privileges */
initifprop(); /* refresh interface info */
seteuid( getuid() ); /* release root privileges */
for (j=0; cur->intf.intf[j].name[0]; j++)
{
strcpy(ifprop.name, cur->intf.intf[j].name);
getifprop(&ifprop);
cur->intf.intf[j].speed = ifprop.speed;
cur->intf.intf[j].duplex = ifprop.fullduplex;
}
break;
}
/*
** calculate interface deviations for this sample
*/
strcpy(dev->intf.intf[i].name, cur->intf.intf[i].name);
dev->intf.intf[i].rbyte = subcount(cur->intf.intf[i].rbyte,
pre->intf.intf[i].rbyte);
dev->intf.intf[i].rpack = subcount(cur->intf.intf[i].rpack,
pre->intf.intf[i].rpack);
dev->intf.intf[i].rerrs = subcount(cur->intf.intf[i].rerrs,
pre->intf.intf[i].rerrs);
dev->intf.intf[i].rdrop = subcount(cur->intf.intf[i].rdrop,
pre->intf.intf[i].rdrop);
dev->intf.intf[i].rfifo = subcount(cur->intf.intf[i].rfifo,
pre->intf.intf[i].rfifo);
dev->intf.intf[i].rframe= subcount(cur->intf.intf[i].rframe,
pre->intf.intf[i].rframe);
dev->intf.intf[i].rcompr= subcount(cur->intf.intf[i].rcompr,
pre->intf.intf[i].rcompr);
dev->intf.intf[i].rmultic=subcount(cur->intf.intf[i].rmultic,
pre->intf.intf[i].rmultic);
dev->intf.intf[i].sbyte = subcount(cur->intf.intf[i].sbyte,
pre->intf.intf[i].sbyte);
dev->intf.intf[i].spack = subcount(cur->intf.intf[i].spack,
pre->intf.intf[i].spack);
dev->intf.intf[i].serrs = subcount(cur->intf.intf[i].serrs,
pre->intf.intf[i].serrs);
dev->intf.intf[i].sdrop = subcount(cur->intf.intf[i].sdrop,
pre->intf.intf[i].sdrop);
dev->intf.intf[i].sfifo = subcount(cur->intf.intf[i].sfifo,
pre->intf.intf[i].sfifo);
dev->intf.intf[i].scollis= subcount(cur->intf.intf[i].scollis,
pre->intf.intf[i].scollis);
dev->intf.intf[i].scarrier= subcount(cur->intf.intf[i].scarrier,
pre->intf.intf[i].scarrier);
dev->intf.intf[i].scompr= subcount(cur->intf.intf[i].scompr,
pre->intf.intf[i].scompr);
dev->intf.intf[i].speed = pre->intf.intf[i].speed;
dev->intf.intf[i].duplex = pre->intf.intf[i].duplex;
/*
** save interface properties for next interval
*/
cur->intf.intf[i].speed = pre->intf.intf[i].speed;
cur->intf.intf[i].duplex = pre->intf.intf[i].duplex;
}
dev->intf.intf[i].name[0] = '\0';
dev->intf.nrintf = i;
/*
** calculate deviations for disks
*/
for (i=j=0; cur->dsk.dsk[i].name[0]; i++)
{
int realj = j;
/*
** check if disk has been added or removed since
** previous interval
*/
if ( strcmp(cur->dsk.dsk[i].name, pre->dsk.dsk[j].name) != 0)
{
for (j++; pre->dsk.dsk[j].name[0]; j++)
{
if ( strcmp(cur->dsk.dsk[i].name,
pre->dsk.dsk[j].name) == 0)
break;
}
/*
** either the corresponding entry has been found
** in the case that a disk has been removed, or
** an empty entry has been found (all counters
** on zero) in the case that a disk has been added
** during the last sample
*/
}
strcpy(dev->dsk.dsk[i].name, cur->dsk.dsk[i].name);
dev->dsk.dsk[i].nread = subcount(cur->dsk.dsk[i].nread,
pre->dsk.dsk[j].nread);
dev->dsk.dsk[i].nwrite = subcount(cur->dsk.dsk[i].nwrite,
pre->dsk.dsk[j].nwrite);
dev->dsk.dsk[i].nrsect = subcount(cur->dsk.dsk[i].nrsect,
pre->dsk.dsk[j].nrsect);
dev->dsk.dsk[i].nwsect = subcount(cur->dsk.dsk[i].nwsect,
pre->dsk.dsk[j].nwsect);
dev->dsk.dsk[i].io_ms = subcount(cur->dsk.dsk[i].io_ms,
pre->dsk.dsk[j].io_ms);
dev->dsk.dsk[i].avque = subcount(cur->dsk.dsk[i].avque,
pre->dsk.dsk[j].avque);
/*
** determine new j
*/
if (pre->dsk.dsk[j].name) // existing matching entry
j++;
else
j = realj; // empty entry: stick to old j
}
dev->dsk.dsk[i].name[0] = '\0';
dev->dsk.ndsk = i;
/*
** calculate deviations for multiple devices
*/
for (i=j=0; cur->dsk.mdd[i].name[0]; i++)
{
int realj = j;
/*
** check if md has been added or removed since
** previous interval
*/
if ( strcmp(cur->dsk.mdd[i].name, pre->dsk.mdd[j].name) != 0)
{
for (j++; pre->dsk.mdd[j].name[0]; j++)
{
if ( strcmp(cur->dsk.mdd[i].name,
pre->dsk.mdd[j].name) == 0)
break;
}
/*
** either the corresponding entry has been found
** in the case that a md has been removed, or
** an empty entry has been found (all counters
** on zero) in the case that a md has been added
** during the last sample
*/
}
strcpy(dev->dsk.mdd[i].name, cur->dsk.mdd[i].name);
dev->dsk.mdd[i].nread = subcount(cur->dsk.mdd[i].nread,
pre->dsk.mdd[j].nread);
dev->dsk.mdd[i].nwrite = subcount(cur->dsk.mdd[i].nwrite,
pre->dsk.mdd[j].nwrite);
dev->dsk.mdd[i].nrsect = subcount(cur->dsk.mdd[i].nrsect,
pre->dsk.mdd[j].nrsect);
dev->dsk.mdd[i].nwsect = subcount(cur->dsk.mdd[i].nwsect,
pre->dsk.mdd[j].nwsect);
dev->dsk.mdd[i].io_ms = subcount(cur->dsk.mdd[i].io_ms,
pre->dsk.mdd[j].io_ms);
dev->dsk.mdd[i].avque = subcount(cur->dsk.mdd[i].avque,
pre->dsk.mdd[j].avque);
/*
** determine new j
*/
if (pre->dsk.mdd[j].name) // existing matching entry
j++;
else
j = realj; // empty entry: stick to old j
}
dev->dsk.mdd[i].name[0] = '\0';
dev->dsk.nmdd = i;
/*
** calculate deviations for LVM logical volumes
*/
for (i=j=0; cur->dsk.lvm[i].name[0]; i++)
{
int realj = j;
/*
** check if logical volume has been added or removed since
** previous interval
*/
if ( strcmp(cur->dsk.lvm[i].name, pre->dsk.lvm[j].name) != 0)
{
for (j++; pre->dsk.lvm[j].name[0]; j++)
{
if ( strcmp(cur->dsk.lvm[i].name,
pre->dsk.lvm[j].name) == 0)
break;
}
/*
** either the corresponding entry has been found
** in the case that a logical volume has been removed,
** or an empty entry has been found (all counters
** on zero) in the case that a logical volume has
** been added during the last sample
*/
}
strcpy(dev->dsk.lvm[i].name, cur->dsk.lvm[i].name);
dev->dsk.lvm[i].nread = subcount(cur->dsk.lvm[i].nread,
pre->dsk.lvm[j].nread);
dev->dsk.lvm[i].nwrite = subcount(cur->dsk.lvm[i].nwrite,
pre->dsk.lvm[j].nwrite);
dev->dsk.lvm[i].nrsect = subcount(cur->dsk.lvm[i].nrsect,
pre->dsk.lvm[j].nrsect);
dev->dsk.lvm[i].nwsect = subcount(cur->dsk.lvm[i].nwsect,
pre->dsk.lvm[j].nwsect);
dev->dsk.lvm[i].io_ms = subcount(cur->dsk.lvm[i].io_ms,
pre->dsk.lvm[j].io_ms);
dev->dsk.lvm[i].avque = subcount(cur->dsk.lvm[i].avque,
pre->dsk.lvm[j].avque);
/*
** determine new j
*/
if (pre->dsk.lvm[j].name) // existing matching entry
j++;
else