tuning libtorrent settings

libt_settings

local_service_announce_interval -> 30s
strict_end_game_mode -> false
low_prio_disk -> false
smooth_connect -> false
tick_interval -> 200
torrent_connect_boost -> 25

request_timeout -> reduce to say 10
peer_timeout -> set to 20
peer_connect_timeout -> 10
inactivity_timeout -> 20

request_queue_time > increase from 3 to say, 50
min_reconnect_time -> set to 10-20
max_out_request_queue > increase to a high number > 1000
max_allowed_in_request_queue > increase to a high number > 1000

connections_limit -> 1000? //max_connec setting in qbt
connection_speed -> 200 
connections_slack -> 50?

send_buffer_low_watermark -> 100 * 1024
send_buffer_watermark -> 1000 * 1024
send_buffer_watermark_factor -> 150

seed_choking_algorithm -> fastest_upload //already set in qbt
disk_cache_algorithm -> avoid_readback //already set in libt (default)
use_read_cache -> true //already set in libt default
unchoke_slots_limit -> 20? //max_uploads setting in qbt

suggest_mode -> suggest_read_cache
coalesce_reads -> true
coalesce_writes -> true

max_queued_disk_bytes -> few mbs?
cache_size -> 2gb or 4gb //cache_size_mb setting in qbt, so set 2048 or 4096.
//cache size is hardcoded to max 4096 (4gb) if set some value. if not set, it defaults to 1/8th of RAM, we don't want that. we want to test predictable behavior in definite cache size

cache_buffer_chunk_size -> x (x * 16kb = 4mb?)
cache_expiry -> 1hr 
mixed_mode_algorithm -> prefer tcp by default in qbt

refer high_perf_seed settings in libtorrent:
file_pool_size
use_disk_cache_pool -> true
allowed_fast_set_size -> 0
send_socket_buffer_size
receive_socket_buffer_size

listen_queue_size -> modified in qbt to 100, not kept configurable