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1.1 nbrk 1: /* $OpenBSD: rf_acctrace.h,v 1.3 2002/12/16 07:01:03 tdeval Exp $ */
2: /* $NetBSD: rf_acctrace.h,v 1.3 1999/02/05 00:06:06 oster Exp $ */
3:
4: /*
5: * Copyright (c) 1995 Carnegie-Mellon University.
6: * All rights reserved.
7: *
8: * Author: Mark Holland
9: *
10: * Permission to use, copy, modify and distribute this software and
11: * its documentation is hereby granted, provided that both the copyright
12: * notice and this permission notice appear in all copies of the
13: * software, derivative works or modified versions, and any portions
14: * thereof, and that both notices appear in supporting documentation.
15: *
16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19: *
20: * Carnegie Mellon requests users of this software to return to
21: *
22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23: * School of Computer Science
24: * Carnegie Mellon University
25: * Pittsburgh PA 15213-3890
26: *
27: * any improvements or extensions that they make and grant Carnegie the
28: * rights to redistribute these changes.
29: */
30:
31: /*****************************************************************************
32: *
33: * acctrace.h -- Header file for acctrace.c
34: *
35: *****************************************************************************/
36:
37:
38: #ifndef _RF__RF_ACCTRACE_H_
39: #define _RF__RF_ACCTRACE_H_
40:
41: #include "rf_types.h"
42: #include "rf_hist.h"
43: #include "rf_etimer.h"
44:
45: typedef struct RF_user_acc_stats_s {
46: RF_uint64 suspend_ovhd_us;/*
47: * usec spent mucking in the
48: * access-suspension code.
49: */
50: RF_uint64 map_us; /* usec spent mapping the access. */
51: RF_uint64 lock_us; /*
52: * usec spent locking & unlocking
53: * stripes, including time spent
54: * blocked.
55: */
56: RF_uint64 dag_create_us; /* usec spent creating the DAGs. */
57: RF_uint64 dag_retry_us; /*
58: * _total_ usec spent retrying the op
59: * -- not broken down into components.
60: */
61: RF_uint64 exec_us; /* usec spent in DispatchDAG. */
62: RF_uint64 exec_engine_us; /*
63: * usec spent in engine, not including
64: * blocking time.
65: */
66: RF_uint64 cleanup_us; /*
67: * usec spent tearing down the dag &
68: * maps, and generally cleaning up.
69: */
70: } RF_user_acc_stats_t;
71:
72: typedef struct RF_recon_acc_stats_s {
73: RF_uint32 recon_start_to_fetch_us;
74: RF_uint32 recon_fetch_to_return_us;
75: RF_uint32 recon_return_to_submit_us;
76: } RF_recon_acc_stats_t;
77:
78: typedef struct RF_acctrace_entry_s {
79: union {
80: RF_user_acc_stats_t user;
81: RF_recon_acc_stats_t recon;
82: } specific;
83: RF_uint8 reconacc; /*
84: * Whether this is a tracerec for a
85: * user acc or a recon acc.
86: */
87: RF_uint64 xor_us; /* usec spent doing XORs. */
88: RF_uint64 q_us; /* usec spent doing XORs. */
89: RF_uint64 plog_us; /*
90: * usec spent waiting to stuff parity
91: * into log.
92: */
93: RF_uint64 diskqueue_us; /*
94: * _total_ usec spent in disk queue(s),
95: * incl concurrent ops.
96: */
97: RF_uint64 diskwait_us; /*
98: * _total_ usec spent actually waiting
99: * on the disk, incl concurrent ops.
100: */
101: RF_uint64 total_us; /* Total usec spent on this access. */
102: RF_uint64 num_phys_ios; /* Number of physical I/Os invoked. */
103: RF_uint64 phys_io_us; /* Time of physical I/O. */
104: RF_Etimer_t tot_timer; /*
105: * A timer used to compute total
106: * access time.
107: */
108: RF_Etimer_t timer; /*
109: * A generic timer val for timing
110: * events that live across procedure
111: * boundaries.
112: */
113: RF_Etimer_t recon_timer; /* Generic timer for recon stuff. */
114: RF_uint64 index;
115: } RF_AccTraceEntry_t;
116:
117: typedef struct RF_AccTotals_s {
118: /* User acc stats. */
119: RF_uint64 suspend_ovhd_us;
120: RF_uint64 map_us;
121: RF_uint64 lock_us;
122: RF_uint64 dag_create_us;
123: RF_uint64 dag_retry_us;
124: RF_uint64 exec_us;
125: RF_uint64 exec_engine_us;
126: RF_uint64 cleanup_us;
127: RF_uint64 user_reccount;
128: /* Recon acc stats. */
129: RF_uint64 recon_start_to_fetch_us;
130: RF_uint64 recon_fetch_to_return_us;
131: RF_uint64 recon_return_to_submit_us;
132: RF_uint64 recon_io_overflow_count;
133: RF_uint64 recon_phys_io_us;
134: RF_uint64 recon_num_phys_ios;
135: RF_uint64 recon_diskwait_us;
136: RF_uint64 recon_reccount;
137: /* Trace entry stats. */
138: RF_uint64 xor_us;
139: RF_uint64 q_us;
140: RF_uint64 plog_us;
141: RF_uint64 diskqueue_us;
142: RF_uint64 diskwait_us;
143: RF_uint64 total_us;
144: RF_uint64 num_log_ents;
145: RF_uint64 phys_io_overflow_count;
146: RF_uint64 num_phys_ios;
147: RF_uint64 phys_io_us;
148: RF_uint64 bigvals;
149: /* Histograms. */
150: RF_Hist_t dw_hist[RF_HIST_NUM_BUCKETS];
151: RF_Hist_t tot_hist[RF_HIST_NUM_BUCKETS];
152: } RF_AccTotals_t;
153:
154: #if RF_UTILITY == 0
155: RF_DECLARE_EXTERN_MUTEX(rf_tracing_mutex);
156: #endif /* RF_UTILITY == 0 */
157:
158: int rf_ConfigureAccessTrace(RF_ShutdownList_t **);
159: void rf_LogTraceRec(RF_Raid_t * raid, RF_AccTraceEntry_t *);
160: void rf_FlushAccessTraceBuf(void);
161:
162: #endif /* !_RF__RF_ACCTRACE_H_ */