sys/dev/raidframe/rf_acctrace.c

   1 /*      $NetBSD: rf_acctrace.c,v 1.22 2006/10/12 01:31:50 christos Exp $        */
   2 /*
   3  * Copyright (c) 1995 Carnegie-Mellon University.
   4  * All rights reserved.
   5  *
   6  * Author: Mark Holland
   7  *
   8  * Permission to use, copy, modify and distribute this software and
   9  * its documentation is hereby granted, provided that both the copyright
  10  * notice and this permission notice appear in all copies of the
  11  * software, derivative works or modified versions, and any portions
  12  * thereof, and that both notices appear in supporting documentation.
  13  *
  14  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  15  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  16  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  17  *
  18  * Carnegie Mellon requests users of this software to return to
  19  *
  20  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  21  *  School of Computer Science
  22  *  Carnegie Mellon University
  23  *  Pittsburgh PA 15213-3890
  24  *
  25  * any improvements or extensions that they make and grant Carnegie the
  26  * rights to redistribute these changes.
  27  */
  28
  29 /*****************************************************************************
  30  *
  31  * acctrace.c -- code to support collecting information about each access
  32  *
  33  *****************************************************************************/
  34
  35
  36 #include <sys/cdefs.h>
  37 __KERNEL_RCSID(0, "$NetBSD: rf_acctrace.c,v 1.22 2006/10/12 01:31:50 christos Exp $");
  38
  39 #include <sys/stat.h>
  40 #include <sys/types.h>
  41 #include <dev/raidframe/raidframevar.h>
  42
  43 #include "rf_threadstuff.h"
  44 #include "rf_debugMem.h"
  45 #include "rf_acctrace.h"
  46 #include "rf_general.h"
  47 #include "rf_raid.h"
  48 #include "rf_etimer.h"
  49 #include "rf_hist.h"
  50 #include "rf_shutdown.h"
  51
  52 #if RF_ACC_TRACE > 0
  53 static long numTracesSoFar;
  54
  55 RF_DECLARE_MUTEX(rf_tracing_mutex)
  56
  57 int
  58 rf_ConfigureAccessTrace(RF_ShutdownList_t **listp)
  59 {
  60         numTracesSoFar = 0;
  61         rf_mutex_init(&rf_tracing_mutex);
  62         return (0);
  63 }
  64
  65 /* install a trace record.  cause a flush to disk or to the trace
  66  * collector daemon if the trace buffer is at least 1/2 full.
  67  */
  68 void
  69 rf_LogTraceRec(RF_Raid_t *raid, RF_AccTraceEntry_t *rec)
  70 {
  71         RF_AccTotals_t *acc = &raid->acc_totals;
  72
  73         if (((rf_maxNumTraces >= 0) && (numTracesSoFar >= rf_maxNumTraces)))
  74                 return;
  75
  76         /* update AccTotals for this device */
  77         if (!raid->keep_acc_totals)
  78                 return;
  79         acc->num_log_ents++;
  80         if (rec->reconacc) {
  81                 acc->recon_start_to_fetch_us += rec->specific.recon.recon_start_to_fetch_us;
  82                 acc->recon_fetch_to_return_us += rec->specific.recon.recon_fetch_to_return_us;
  83                 acc->recon_return_to_submit_us += rec->specific.recon.recon_return_to_submit_us;
  84                 acc->recon_num_phys_ios += rec->num_phys_ios;
  85                 acc->recon_phys_io_us += rec->phys_io_us;
  86                 acc->recon_diskwait_us += rec->diskwait_us;
  87                 acc->recon_reccount++;
  88         } else {
  89                 RF_HIST_ADD(acc->tot_hist, rec->total_us);
  90                 RF_HIST_ADD(acc->dw_hist, rec->diskwait_us);
  91                 /* count of physical ios which are too big.  often due to
  92                  * thermal recalibration */
  93                 /* if bigvals > 0, you should probably ignore this data set */
  94                 if (rec->diskwait_us > 100000)
  95                         acc->bigvals++;
  96                 acc->total_us += rec->total_us;
  97                 acc->suspend_ovhd_us += rec->specific.user.suspend_ovhd_us;
  98                 acc->map_us += rec->specific.user.map_us;
  99                 acc->lock_us += rec->specific.user.lock_us;
 100                 acc->dag_create_us += rec->specific.user.dag_create_us;
 101                 acc->dag_retry_us += rec->specific.user.dag_retry_us;
 102                 acc->exec_us += rec->specific.user.exec_us;
 103                 acc->cleanup_us += rec->specific.user.cleanup_us;
 104                 acc->exec_engine_us += rec->specific.user.exec_engine_us;
 105                 acc->xor_us += rec->xor_us;
 106                 acc->q_us += rec->q_us;
 107                 acc->plog_us += rec->plog_us;
 108                 acc->diskqueue_us += rec->diskqueue_us;
 109                 acc->diskwait_us += rec->diskwait_us;
 110                 acc->num_phys_ios += rec->num_phys_ios;
 111                 acc->phys_io_us = rec->phys_io_us;
 112                 acc->user_reccount++;
 113         }
 114 }
 115 #endif /* RF_ACC_TRACE > 0 */
 116