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 53static long numTracesSoFar; 54 55rf_declare_mutex2(rf_tracing_mutex); 56 57static void 58rf_ShutdownAccessTrace(void *unused) 59{ 60 rf_destroy_mutex2(rf_tracing_mutex); 61} 62 63int 64rf_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 */ 75void 76rf_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