1 /* $NetBSD: rf_acctrace.h,v 1.6 2002/11/23 02:44:14 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.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 RF_DECLARE_EXTERN_MUTEX(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