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      1 /*	$NetBSD: rf_acctrace.h,v 1.10 2011/05/01 06:22:54 mrg 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 (at) 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.h -- header file for acctrace.c
     32  *
     33  *****************************************************************************/
     34 
     35 
     36 #ifndef _RF__RF_ACCTRACE_H_
     37 #define _RF__RF_ACCTRACE_H_
     38 
     39 #include <dev/raidframe/raidframevar.h>
     40 #include "rf_hist.h"
     41 #include "rf_etimer.h"
     42 
     43 typedef struct RF_user_acc_stats_s {
     44 	RF_uint64 suspend_ovhd_us;	/* us spent mucking in the
     45 					 * access-suspension code */
     46 	RF_uint64 map_us;	/* us spent mapping the access */
     47 	RF_uint64 lock_us;	/* us spent locking & unlocking stripes,
     48 				 * including time spent blocked */
     49 	RF_uint64 dag_create_us;/* us spent creating the DAGs */
     50 	RF_uint64 dag_retry_us;	/* _total_ us spent retrying the op -- not
     51 				 * broken down into components */
     52 	RF_uint64 exec_us;	/* us spent in DispatchDAG */
     53 	RF_uint64 exec_engine_us;	/* us spent in engine, not including
     54 					 * blocking time */
     55 	RF_uint64 cleanup_us;	/* us spent tearing down the dag & maps, and
     56 				 * generally cleaning up */
     57 }       RF_user_acc_stats_t;
     58 
     59 typedef struct RF_recon_acc_stats_s {
     60 	RF_uint32 recon_start_to_fetch_us;
     61 	RF_uint32 recon_fetch_to_return_us;
     62 	RF_uint32 recon_return_to_submit_us;
     63 }       RF_recon_acc_stats_t;
     64 
     65 typedef struct RF_acctrace_entry_s {
     66 	union {
     67 		RF_user_acc_stats_t user;
     68 		RF_recon_acc_stats_t recon;
     69 	}       specific;
     70 	RF_uint8 reconacc;	/* whether  this is a tracerec for a user acc
     71 				 * or a recon acc */
     72 	RF_uint64 xor_us;	/* us spent doing XORs */
     73 	RF_uint64 q_us;		/* us spent doing XORs */
     74 	RF_uint64 plog_us;	/* us spent waiting to stuff parity into log */
     75 	RF_uint64 diskqueue_us;	/* _total_ us spent in disk queue(s), incl
     76 				 * concurrent ops */
     77 	RF_uint64 diskwait_us;	/* _total_ us spent waiting actually waiting
     78 				 * on the disk, incl concurrent ops */
     79 	RF_uint64 total_us;	/* total us spent on this access */
     80 	RF_uint64 num_phys_ios;	/* number of physical I/Os invoked */
     81 	RF_uint64 phys_io_us;	/* time of physical I/O */
     82 	RF_Etimer_t tot_timer;	/* a timer used to compute total access time */
     83 	RF_Etimer_t timer;	/* a generic timer val for timing events that
     84 				 * live across procedure boundaries */
     85 	RF_Etimer_t recon_timer;/* generic timer for recon stuff */
     86 	RF_uint64 index;
     87 }       RF_AccTraceEntry_t;
     88 
     89 typedef struct RF_AccTotals_s {
     90 	/* user acc stats */
     91 	RF_uint64 suspend_ovhd_us;
     92 	RF_uint64 map_us;
     93 	RF_uint64 lock_us;
     94 	RF_uint64 dag_create_us;
     95 	RF_uint64 dag_retry_us;
     96 	RF_uint64 exec_us;
     97 	RF_uint64 exec_engine_us;
     98 	RF_uint64 cleanup_us;
     99 	RF_uint64 user_reccount;
    100 	/* recon acc stats */
    101 	RF_uint64 recon_start_to_fetch_us;
    102 	RF_uint64 recon_fetch_to_return_us;
    103 	RF_uint64 recon_return_to_submit_us;
    104 	RF_uint64 recon_io_overflow_count;
    105 	RF_uint64 recon_phys_io_us;
    106 	RF_uint64 recon_num_phys_ios;
    107 	RF_uint64 recon_diskwait_us;
    108 	RF_uint64 recon_reccount;
    109 	/* trace entry stats */
    110 	RF_uint64 xor_us;
    111 	RF_uint64 q_us;
    112 	RF_uint64 plog_us;
    113 	RF_uint64 diskqueue_us;
    114 	RF_uint64 diskwait_us;
    115 	RF_uint64 total_us;
    116 	RF_uint64 num_log_ents;
    117 	RF_uint64 phys_io_overflow_count;
    118 	RF_uint64 num_phys_ios;
    119 	RF_uint64 phys_io_us;
    120 	RF_uint64 bigvals;
    121 	/* histograms */
    122 	RF_Hist_t dw_hist[RF_HIST_NUM_BUCKETS];
    123 	RF_Hist_t tot_hist[RF_HIST_NUM_BUCKETS];
    124 }       RF_AccTotals_t;
    125 
    126 extern rf_declare_mutex2(rf_tracing_mutex);
    127 
    128 
    129 int     rf_ConfigureAccessTrace(RF_ShutdownList_t ** listp);
    130 void    rf_LogTraceRec(RF_Raid_t * raid, RF_AccTraceEntry_t * rec);
    131 
    132 #endif				/* !_RF__RF_ACCTRACE_H_ */
    133