1 /* $NetBSD: rf_acctrace.c,v 1.23 2006/11/16 01:33:23 christos 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 1.23 2006/11/16 01:33:23 christos 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_MUTEX(rf_tracing_mutex) 56 57 int 58 rf_ConfigureAccessTrace(RF_ShutdownList_t **listp) 59 { 60 numTracesSoFar = 0; 61 rf_mutex_init(&rf_tracing_mutex); 62 return (0); 63 } 64 65 /* install a trace record. cause a flush to disk or to the trace 66 * collector daemon if the trace buffer is at least 1/2 full. 67 */ 68 void 69 rf_LogTraceRec(RF_Raid_t *raid, RF_AccTraceEntry_t *rec) 70 { 71 RF_AccTotals_t *acc = &raid->acc_totals; 72 73 if (((rf_maxNumTraces >= 0) && (numTracesSoFar >= rf_maxNumTraces))) 74 return; 75 76 /* update AccTotals for this device */ 77 if (!raid->keep_acc_totals) 78 return; 79 acc->num_log_ents++; 80 if (rec->reconacc) { 81 acc->recon_start_to_fetch_us += rec->specific.recon.recon_start_to_fetch_us; 82 acc->recon_fetch_to_return_us += rec->specific.recon.recon_fetch_to_return_us; 83 acc->recon_return_to_submit_us += rec->specific.recon.recon_return_to_submit_us; 84 acc->recon_num_phys_ios += rec->num_phys_ios; 85 acc->recon_phys_io_us += rec->phys_io_us; 86 acc->recon_diskwait_us += rec->diskwait_us; 87 acc->recon_reccount++; 88 } else { 89 RF_HIST_ADD(acc->tot_hist, rec->total_us); 90 RF_HIST_ADD(acc->dw_hist, rec->diskwait_us); 91 /* count of physical ios which are too big. often due to 92 * thermal recalibration */ 93 /* if bigvals > 0, you should probably ignore this data set */ 94 if (rec->diskwait_us > 100000) 95 acc->bigvals++; 96 acc->total_us += rec->total_us; 97 acc->suspend_ovhd_us += rec->specific.user.suspend_ovhd_us; 98 acc->map_us += rec->specific.user.map_us; 99 acc->lock_us += rec->specific.user.lock_us; 100 acc->dag_create_us += rec->specific.user.dag_create_us; 101 acc->dag_retry_us += rec->specific.user.dag_retry_us; 102 acc->exec_us += rec->specific.user.exec_us; 103 acc->cleanup_us += rec->specific.user.cleanup_us; 104 acc->exec_engine_us += rec->specific.user.exec_engine_us; 105 acc->xor_us += rec->xor_us; 106 acc->q_us += rec->q_us; 107 acc->plog_us += rec->plog_us; 108 acc->diskqueue_us += rec->diskqueue_us; 109 acc->diskwait_us += rec->diskwait_us; 110 acc->num_phys_ios += rec->num_phys_ios; 111 acc->phys_io_us = rec->phys_io_us; 112 acc->user_reccount++; 113 } 114 } 115 #endif /* RF_ACC_TRACE > 0 */ 116 117