| 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 | |