elexis
89e339dd16
Patch By: Sandarac Discussed with: Philip, echotangoecho, Bezerra Fixes #4072. Differential Revision: https://code.wildfiregames.com/D587 This was SVN commit r20639.
314 lines
8.2 KiB
C++
314 lines
8.2 KiB
C++
/* Copyright (C) 2010 Wildfire Games.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* gathers statistics from all file modules.
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*/
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#include "precompiled.h"
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#include "lib/file/common/file_stats.h"
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#include <set>
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#include "lib/timer.h"
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#if FILE_STATS_ENABLED
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// vfs
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static size_t vfs_files;
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static double vfs_size_total;
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static double vfs_init_elapsed_time;
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// file
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static size_t unique_names;
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static size_t unique_name_len_total;
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static size_t open_files_cur, open_files_max; // total = opened_files.size()
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// file_buf
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static size_t extant_bufs_cur, extant_bufs_max, extant_bufs_total;
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static double buf_size_total, buf_aligned_size_total;
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// file_io
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static size_t user_ios;
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static double user_io_size_total;
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static double io_actual_size_total[FI_MAX_IDX][2];
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static double io_elapsed_time[FI_MAX_IDX][2];
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static double io_process_time_total;
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static size_t io_seeks;
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// file_cache
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static size_t cache_count[2];
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static double cache_size_total[2];
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static size_t conflict_misses;
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//static double conflict_miss_size_total; // JW: currently not used nor computed
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static size_t block_cache_count[2];
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// archive builder
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static size_t ab_connection_attempts; // total number of trace entries
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static size_t ab_repeated_connections; // how many of these were not unique
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// convenience functions for measuring elapsed time in an interval.
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// by exposing start/finish calls, we avoid callers from querying
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// timestamps when stats are disabled.
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static double start_time;
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static void timer_start(double* start_time_storage = &start_time)
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{
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// make sure no measurement is currently active
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// (since start_time is shared static storage)
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ENSURE(*start_time_storage == 0.0);
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*start_time_storage = timer_Time();
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}
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static double timer_reset(double* start_time_storage = &start_time)
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{
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double elapsed = timer_Time() - *start_time_storage;
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*start_time_storage = 0.0;
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return elapsed;
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}
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//-----------------------------------------------------------------------------
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//
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// vfs
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//
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void stats_vfs_file_add(size_t file_size)
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{
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vfs_files++;
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vfs_size_total += file_size;
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}
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void stats_vfs_file_remove(size_t file_size)
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{
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vfs_files--;
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vfs_size_total -= file_size;
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}
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// stats_vfs_init_* are currently unused
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void stats_vfs_init_start()
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{
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timer_start();
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}
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void stats_vfs_init_finish()
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{
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vfs_init_elapsed_time += timer_reset();
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}
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//
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// file
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//
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void stats_unique_name(size_t name_len)
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{
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unique_names++;
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unique_name_len_total += name_len;
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}
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void stats_open()
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{
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open_files_cur++;
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open_files_max = std::max(open_files_max, open_files_cur);
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// could also use a set to determine unique files that have been opened
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}
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void stats_close()
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{
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ENSURE(open_files_cur > 0);
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open_files_cur--;
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}
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//
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// file_buf
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//
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void stats_buf_alloc(size_t size, size_t alignedSize)
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{
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extant_bufs_cur++;
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extant_bufs_max = std::max(extant_bufs_max, extant_bufs_cur);
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extant_bufs_total++;
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buf_size_total += size;
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buf_aligned_size_total += alignedSize;
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}
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void stats_buf_free()
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{
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ENSURE(extant_bufs_cur > 0);
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extant_bufs_cur--;
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}
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void stats_buf_ref()
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{
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extant_bufs_cur++;
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}
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//
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// file_io
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//
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void stats_io_user_request(size_t user_size)
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{
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user_ios++;
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user_io_size_total += user_size;
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}
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ScopedIoMonitor::ScopedIoMonitor()
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{
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m_startTime = 0.0;
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timer_start(&m_startTime);
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}
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ScopedIoMonitor::~ScopedIoMonitor()
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{
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// note: we can only bill IOs that have succeeded :S
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timer_reset(&m_startTime);
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}
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void ScopedIoMonitor::NotifyOfSuccess(FileIOImplentation fi, int opcode, off_t size)
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{
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ENSURE(fi < FI_MAX_IDX);
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ENSURE(opcode == LIO_READ || opcode == LIO_WRITE);
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io_actual_size_total[fi][opcode == LIO_WRITE] += size;
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io_elapsed_time[fi][opcode == LIO_WRITE] += timer_reset(&m_startTime);
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}
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void stats_cb_start()
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{
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timer_start();
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}
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void stats_cb_finish()
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{
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io_process_time_total += timer_reset();
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}
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void stats_block_cache(CacheRet cr)
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{
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ENSURE(cr == CR_HIT || cr == CR_MISS);
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block_cache_count[cr]++;
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}
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//
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// archive builder
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//
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void stats_ab_connection(bool already_exists)
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{
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ab_connection_attempts++;
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if(already_exists)
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ab_repeated_connections++;
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}
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//-----------------------------------------------------------------------------
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template<typename T> int percent(T num, T divisor)
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{
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if(!divisor)
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return 0;
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return (int)(100*num / divisor);
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}
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void file_stats_dump()
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{
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if(!debug_filter_allows("FILE_STATS|"))
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return;
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const double KB = 1e3; const double MB = 1e6; const double ms = 1e-3;
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debug_printf("--------------------------------------------------------------------------------\n");
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debug_printf("File statistics:\n");
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// note: we split the reports into several debug_printfs for clarity;
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// this is necessary anyway due to fixed-size buffer.
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debug_printf(
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L"\nvfs:\n"
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L"Total files: %lu (%g MB)\n"
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L"Init/mount time: %g ms\n",
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(unsigned long)vfs_files, vfs_size_total/MB,
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vfs_init_elapsed_time/ms
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);
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debug_printf(
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L"\nfile:\n"
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L"Total names: %lu (%lu KB)\n"
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L"Max. concurrent: %lu; leaked: %lu.\n",
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(unsigned long)unique_names, (unsigned long)(unique_name_len_total/1000),
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(unsigned long)open_files_max, (unsigned long)open_files_cur
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);
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debug_printf(
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L"\nfile_buf:\n"
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L"Total buffers used: %lu (%g MB)\n"
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L"Max concurrent: %lu; leaked: %lu\n"
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L"Internal fragmentation: %d%%\n",
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(unsigned long)extant_bufs_total, buf_size_total/MB,
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(unsigned long)extant_bufs_max, (unsigned long)extant_bufs_cur,
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percent(buf_aligned_size_total-buf_size_total, buf_size_total)
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);
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debug_printf(
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L"\nfile_io:\n"
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L"Total user load requests: %lu (%g MB)\n"
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L"IO thoughput [MB/s; 0=never happened]:\n"
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L" lowio: R=%.3g, W=%.3g\n"
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L" aio: R=%.3g, W=%.3g\n"
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L"Average size = %g KB; seeks: %lu; total callback time: %g ms\n"
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L"Total data actually read from disk = %g MB\n",
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(unsigned long)user_ios, user_io_size_total/MB,
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#define THROUGHPUT(impl, opcode) (io_elapsed_time[impl][opcode == LIO_WRITE] == 0.0)? 0.0 : (io_actual_size_total[impl][opcode == LIO_WRITE] / io_elapsed_time[impl][opcode == LIO_WRITE] / MB)
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THROUGHPUT(FI_LOWIO, LIO_READ), THROUGHPUT(FI_LOWIO, LIO_WRITE),
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THROUGHPUT(FI_AIO , LIO_READ), THROUGHPUT(FI_AIO , LIO_WRITE),
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user_io_size_total/user_ios/KB, (unsigned long)io_seeks, io_process_time_total/ms,
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(io_actual_size_total[FI_LOWIO][0]+io_actual_size_total[FI_AIO][0])/MB
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);
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debug_printf(
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L"\nfile_cache:\n"
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L"Hits: %lu (%g MB); misses %lu (%g MB); ratio: %u%%\n"
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L"Percent of requested bytes satisfied by cache: %u%%; non-compulsory misses: %lu (%u%% of misses)\n"
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L"Block hits: %lu; misses: %lu; ratio: %u%%\n",
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(unsigned long)cache_count[CR_HIT], cache_size_total[CR_HIT]/MB, (unsigned long)cache_count[CR_MISS], cache_size_total[CR_MISS]/MB, percent(cache_count[CR_HIT], cache_count[CR_HIT]+cache_count[CR_MISS]),
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percent(cache_size_total[CR_HIT], cache_size_total[CR_HIT]+cache_size_total[CR_MISS]), (unsigned long)conflict_misses, percent(conflict_misses, cache_count[CR_MISS]),
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(unsigned long)block_cache_count[CR_HIT], (unsigned long)block_cache_count[CR_MISS], percent(block_cache_count[CR_HIT], block_cache_count[CR_HIT]+block_cache_count[CR_MISS])
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);
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debug_printf(
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L"\nvfs_optimizer:\n"
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L"Total trace entries: %lu; repeated connections: %lu; unique files: %lu\n",
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(unsigned long)ab_connection_attempts, (unsigned long)ab_repeated_connections, (unsigned long)(ab_connection_attempts-ab_repeated_connections)
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);
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}
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#endif // FILE_STATS_ENABLED
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