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added read cache. Not fully configurable yet

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This commit is contained in:
Arvid Norberg
2008-02-22 04:11:04 +00:00
parent bf7552a4cd
commit ef9ef674d5
5 changed files with 486 additions and 79 deletions
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23
docs/manual.rst
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@@ -506,7 +506,11 @@ Returns status of the disk cache for this session.
{
size_type blocks_written;
size_type writes;
int write_size;
size_type blocks_read;
size_type blocks_read_hit;
size_type reads;
int cache_size;
int read_cache_size;
};
``blocks_written`` is the total number of 16 KiB blocks written to disk
@@ -519,7 +523,18 @@ The ratio (``blocks_written`` - ``writes``) / ``blocks_written`` represents
the number of saved write operations per total write operations. i.e. a kind
of cache hit ratio for the write cahe.
``write_size`` is the number of 16 KiB blocks currently in the write cache.
``blocks_read`` is the number of blocks that were requested from the
bittorrent engine (from peers), that were served from disk or cache.
``blocks_read_hit`` is the number of blocks that were served from cache.
The ratio ``blocks_read_hit`` / ``blocks_read`` is the cache hit ratio
for the read cache.
``cache_size`` is the number of 16 KiB blocks currently in the disk cache.
This includes both read and write cache.
``read_cache_size`` is the number of 16KiB blocks in the read cache.
get_cache_info()
----------------
@@ -539,7 +554,7 @@ specified info-hash (``ih``).
{
int piece;
std::vector<bool> blocks;
ptime last_write;
ptime last_use;
};
``piece`` is the piece index for this cache entry.
@@ -547,7 +562,7 @@ specified info-hash (``ih``).
``blocks`` has one entry for each block in this piece. ``true`` represents
the data for that block being in the disk cache and ``false`` means it's not.
``last_write`` is the time when a block was last written to this piece. The older
``last_use`` is the time when a block was last written to this piece. The older
a piece is, the more likely it is to be flushed to disk.
is_listening() listen_port() listen_on()