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

     /*      $NetBSD: rf_acctrace.h,v 1.7 2004/02/29 04:03:50 oster Exp $    */
     /*
      * Copyright (c) 1995 Carnegie-Mellon University.
      * All rights reserved.
      *
      * Author: Mark Holland
      *
      * Permission to use, copy, modify and distribute this software and
      * its documentation is hereby granted, provided that both the copyright
     * notice and this permission notice appear in all copies of the
     * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     *
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     *
     * Carnegie Mellon requests users of this software to return to
     *
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     *
     * any improvements or extensions that they make and grant Carnegie the
     * rights to redistribute these changes.
     */
    
    /*****************************************************************************
     *
     * acctrace.h -- header file for acctrace.c
     *
     *****************************************************************************/
    
    
    #ifndef _RF__RF_ACCTRACE_H_
    #define _RF__RF_ACCTRACE_H_
    
    #include <dev/raidframe/raidframevar.h>
    #include "rf_hist.h"
    #include "rf_etimer.h"
    
    typedef struct RF_user_acc_stats_s {
            RF_uint64 suspend_ovhd_us;      /* us spent mucking in the
                                             * access-suspension code */
            RF_uint64 map_us;       /* us spent mapping the access */
            RF_uint64 lock_us;      /* us spent locking & unlocking stripes,
                                     * including time spent blocked */
            RF_uint64 dag_create_us;/* us spent creating the DAGs */
            RF_uint64 dag_retry_us; /* _total_ us spent retrying the op -- not
                                     * broken down into components */
            RF_uint64 exec_us;      /* us spent in DispatchDAG */
            RF_uint64 exec_engine_us;       /* us spent in engine, not including
                                             * blocking time */
            RF_uint64 cleanup_us;   /* us spent tearing down the dag & maps, and
                                     * generally cleaning up */
    }       RF_user_acc_stats_t;
    
    typedef struct RF_recon_acc_stats_s {
            RF_uint32 recon_start_to_fetch_us;
            RF_uint32 recon_fetch_to_return_us;
            RF_uint32 recon_return_to_submit_us;
    }       RF_recon_acc_stats_t;
    
    typedef struct RF_acctrace_entry_s {
            union {
                    RF_user_acc_stats_t user;
                    RF_recon_acc_stats_t recon;
            }       specific;
            RF_uint8 reconacc;      /* whether  this is a tracerec for a user acc
                                     * or a recon acc */
            RF_uint64 xor_us;       /* us spent doing XORs */
            RF_uint64 q_us;         /* us spent doing XORs */
            RF_uint64 plog_us;      /* us spent waiting to stuff parity into log */
            RF_uint64 diskqueue_us; /* _total_ us spent in disk queue(s), incl
                                     * concurrent ops */
            RF_uint64 diskwait_us;  /* _total_ us spent waiting actually waiting
                                     * on the disk, incl concurrent ops */
            RF_uint64 total_us;     /* total us spent on this access */
            RF_uint64 num_phys_ios; /* number of physical I/Os invoked */
            RF_uint64 phys_io_us;   /* time of physical I/O */
            RF_Etimer_t tot_timer;  /* a timer used to compute total access time */
            RF_Etimer_t timer;      /* a generic timer val for timing events that
                                     * live across procedure boundaries */
            RF_Etimer_t recon_timer;/* generic timer for recon stuff */
            RF_uint64 index;
    }       RF_AccTraceEntry_t;
    
    typedef struct RF_AccTotals_s {
            /* user acc stats */
            RF_uint64 suspend_ovhd_us;
            RF_uint64 map_us;
            RF_uint64 lock_us;
            RF_uint64 dag_create_us;
            RF_uint64 dag_retry_us;
            RF_uint64 exec_us;
            RF_uint64 exec_engine_us;
            RF_uint64 cleanup_us;
            RF_uint64 user_reccount;
           /* recon acc stats */
           RF_uint64 recon_start_to_fetch_us;
           RF_uint64 recon_fetch_to_return_us;
           RF_uint64 recon_return_to_submit_us;
           RF_uint64 recon_io_overflow_count;
           RF_uint64 recon_phys_io_us;
           RF_uint64 recon_num_phys_ios;
           RF_uint64 recon_diskwait_us;
           RF_uint64 recon_reccount;
           /* trace entry stats */
           RF_uint64 xor_us;
           RF_uint64 q_us;
           RF_uint64 plog_us;
           RF_uint64 diskqueue_us;
           RF_uint64 diskwait_us;
           RF_uint64 total_us;
           RF_uint64 num_log_ents;
           RF_uint64 phys_io_overflow_count;
           RF_uint64 num_phys_ios;
           RF_uint64 phys_io_us;
           RF_uint64 bigvals;
           /* histograms */
           RF_Hist_t dw_hist[RF_HIST_NUM_BUCKETS];
           RF_Hist_t tot_hist[RF_HIST_NUM_BUCKETS];
   }       RF_AccTotals_t;
   
   RF_DECLARE_EXTERN_MUTEX(rf_tracing_mutex)
   
   
   int     rf_ConfigureAccessTrace(RF_ShutdownList_t ** listp);
   void    rf_LogTraceRec(RF_Raid_t * raid, RF_AccTraceEntry_t * rec);
   
   #endif                          /* !_RF__RF_ACCTRACE_H_ */

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