1 | /* $NetBSD: rf_acctrace.c,v 1.24 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@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 1.24 2011/05/01 06:22:54 mrg 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_mutex2(rf_tracing_mutex); |
56 | |
57 | static void |
58 | rf_ShutdownAccessTrace(void *unused) |
59 | { |
60 | rf_destroy_mutex2(rf_tracing_mutex); |
61 | } |
62 | |
63 | int |
64 | rf_ConfigureAccessTrace(RF_ShutdownList_t **listp) |
65 | { |
66 | numTracesSoFar = 0; |
67 | rf_init_mutex2(rf_tracing_mutex, IPL_VM); |
68 | rf_ShutdownCreate(listp, rf_ShutdownAccessTrace, NULL); |
69 | return (0); |
70 | } |
71 | |
72 | /* install a trace record. cause a flush to disk or to the trace |
73 | * collector daemon if the trace buffer is at least 1/2 full. |
74 | */ |
75 | void |
76 | rf_LogTraceRec(RF_Raid_t *raid, RF_AccTraceEntry_t *rec) |
77 | { |
78 | RF_AccTotals_t *acc = &raid->acc_totals; |
79 | |
80 | if (((rf_maxNumTraces >= 0) && (numTracesSoFar >= rf_maxNumTraces))) |
81 | return; |
82 | |
83 | /* update AccTotals for this device */ |
84 | if (!raid->keep_acc_totals) |
85 | return; |
86 | acc->num_log_ents++; |
87 | if (rec->reconacc) { |
88 | acc->recon_start_to_fetch_us += rec->specific.recon.recon_start_to_fetch_us; |
89 | acc->recon_fetch_to_return_us += rec->specific.recon.recon_fetch_to_return_us; |
90 | acc->recon_return_to_submit_us += rec->specific.recon.recon_return_to_submit_us; |
91 | acc->recon_num_phys_ios += rec->num_phys_ios; |
92 | acc->recon_phys_io_us += rec->phys_io_us; |
93 | acc->recon_diskwait_us += rec->diskwait_us; |
94 | acc->recon_reccount++; |
95 | } else { |
96 | RF_HIST_ADD(acc->tot_hist, rec->total_us); |
97 | RF_HIST_ADD(acc->dw_hist, rec->diskwait_us); |
98 | /* count of physical ios which are too big. often due to |
99 | * thermal recalibration */ |
100 | /* if bigvals > 0, you should probably ignore this data set */ |
101 | if (rec->diskwait_us > 100000) |
102 | acc->bigvals++; |
103 | acc->total_us += rec->total_us; |
104 | acc->suspend_ovhd_us += rec->specific.user.suspend_ovhd_us; |
105 | acc->map_us += rec->specific.user.map_us; |
106 | acc->lock_us += rec->specific.user.lock_us; |
107 | acc->dag_create_us += rec->specific.user.dag_create_us; |
108 | acc->dag_retry_us += rec->specific.user.dag_retry_us; |
109 | acc->exec_us += rec->specific.user.exec_us; |
110 | acc->cleanup_us += rec->specific.user.cleanup_us; |
111 | acc->exec_engine_us += rec->specific.user.exec_engine_us; |
112 | acc->xor_us += rec->xor_us; |
113 | acc->q_us += rec->q_us; |
114 | acc->plog_us += rec->plog_us; |
115 | acc->diskqueue_us += rec->diskqueue_us; |
116 | acc->diskwait_us += rec->diskwait_us; |
117 | acc->num_phys_ios += rec->num_phys_ios; |
118 | acc->phys_io_us = rec->phys_io_us; |
119 | acc->user_reccount++; |
120 | } |
121 | } |
122 | #endif /* RF_ACC_TRACE > 0 */ |
123 | |
124 | |