rf_acctrace.c

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    1 /*      $NetBSD: rf_acctrace.c,v 1.19 2004/03/01 23:30:57 oster 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 1.19 2004/03/01 23:30:57 oster 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

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FreeBSD/Linux Kernel Cross Reference sys/dev/raidframe/rf_acctrace.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/raidframe/rf_acctrace.c