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tuning of guided read cache

This commit is contained in:
Arvid Norberg 2010-02-01 00:38:32 +00:00
parent 172f6c2513
commit 53ef3dfb22
2 changed files with 2 additions and 4 deletions
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2
include/libtorrent/session_settings.hpp
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@ -177,7 +177,7 @@ namespace libtorrent
, optimize_hashing_for_speed(true)
, file_checks_delay_per_block(0)
, disk_cache_algorithm(largest_contiguous)
, read_cache_line_size(16)
, read_cache_line_size(128)
, write_cache_line_size(32)
, optimistic_disk_retry(10 * 60)
, disable_hash_checks(false)

4
src/peer_connection.cpp
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@ -3858,6 +3858,7 @@ namespace libtorrent
int num_uploads = m_ses.num_uploads();
if (num_uploads == 0) num_uploads = 1;
// assume half of the cache is write cache if we're downloading
// this torrent as well
int cache_size = m_ses.m_settings.cache_size / num_uploads;
@ -3866,9 +3867,6 @@ namespace libtorrent
// cache line should not be greater than this
// try to avoid locking caches for more than a couple of seconds
if (upload_rate * 4 / 16 / 1024 < cache_size)
cache_size = upload_rate * 4 / 16 / 1024;
expiry = cache_size * 16 * 1024 / upload_rate;
if (expiry < 1) expiry = 1;
else if (expiry > 10) expiry = 10;