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premiere-libtorrent
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improved disk buffer logging and added extra asserts when logging disk buffer stats

This commit is contained in:
Arvid Norberg 2009-05-19 07:00:05 +00:00
parent ad157d49d2
commit c047f66454
3 changed files with 34 additions and 2 deletions
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3
include/libtorrent/disk_io_thread.hpp
View File

@ -217,9 +217,12 @@ namespace libtorrent
int m_allocations;
#endif
#ifdef TORRENT_DISK_STATS
protected:
void disk_buffer_pool::rename_buffer(char* buf, char const* category);
std::map<std::string, int> m_categories;
std::map<char*, std::string> m_buf_to_category;
std::ofstream m_log;
private:
#endif
#ifdef TORRENT_DEBUG
int m_magic;

2
parse_disk_buffer_log.py
View File

@ -48,8 +48,6 @@ print
out.close()
keys = ['check piece', 'send buffer', 'read cache', 'receive buffer', 'hash temp']
out = open('disk_buffer.gnuplot', 'wb')
print >>out, "set term png size 1200,700"
print >>out, 'set output "disk_buffer.png"'

31
src/disk_io_thread.cpp
View File

@ -60,6 +60,8 @@ namespace libtorrent
#endif
#ifdef TORRENT_DISK_STATS
m_log.open("disk_buffers.log", std::ios::trunc);
m_categories["read cache"] = 0;
m_categories["write cache"] = 0;
#endif
#ifdef TORRENT_DEBUG
m_magic = 0x1337;
@ -120,6 +122,21 @@ namespace libtorrent
return ret;
}
#ifdef TORRENT_DISK_STATS
void disk_buffer_pool::rename_buffer(char* buf, char const* category)
{
TORRENT_ASSERT(m_categories.find(m_buf_to_category[buf])
!= m_categories.end());
std::string const& prev_category = m_buf_to_category[buf];
--m_categories[prev_category];
m_log << log_time() << " " << prev_category << ": " << m_categories[prev_category] << "\n";
++m_categories[category];
m_buf_to_category[buf] = category;
m_log << log_time() << " " << category << ": " << m_categories[category] << "\n";
}
#endif
void disk_buffer_pool::free_buffer(char* buf)
{
TORRENT_ASSERT(buf);
@ -569,6 +586,10 @@ namespace libtorrent
TORRENT_ASSERT(find_cached_piece(m_pieces, j, l) == m_pieces.end());
cached_piece_entry p;
#ifdef TORRENT_DISK_STATS
rename_buffer(j.buffer, "write cache");
#endif
int piece_size = j.storage->info()->piece_size(j.piece);
int blocks_in_piece = (piece_size + m_block_size - 1) / m_block_size;
@ -822,6 +843,13 @@ namespace libtorrent
TORRENT_ASSERT(cached_read_blocks + cached_write_blocks == m_cache_stats.cache_size);
TORRENT_ASSERT(cached_read_blocks == m_cache_stats.read_cache_size);
#ifdef TORRENT_DISK_STATS
int read_allocs = m_categories.find(std::string("read cache"))->second;
int write_allocs = m_categories.find(std::string("write cache"))->second;
TORRENT_ASSERT(cached_read_blocks == read_allocs);
TORRENT_ASSERT(cached_write_blocks == write_allocs);
#endif
// when writing, there may be a one block difference, right before an old piece
// is flushed
TORRENT_ASSERT(m_cache_stats.cache_size <= m_settings.cache_size + 1);
@ -1317,6 +1345,9 @@ namespace libtorrent
--p->num_blocks;
}
p->blocks[block] = j.buffer;
#ifdef TORRENT_DISK_STATS
rename_buffer(j.buffer, "write cache");
#endif
++m_cache_stats.cache_size;
++p->num_blocks;
p->last_use = time_now();