在国外论坛扒了一分比较全的配置优化参数，可以在ltconfig上优化
active_limit = 2000;
active_seeds = 2000;
allow_multiple_connections_per_ip: true
auto_upload_slots = false;
cache_buffer_chunk_size = 128;
cache_expiry: 120
cache_size: 512000;
choking_algorithm: 1;
close_redundant_connections = true;
enable_incoming_utp: false;
enable_outgoing_utp: false;
file_pool_size = 500;
inactivity_timeout = 20;
low_prio_disk: false;
max_failcount = 1;
max_rejects = 10;
max_queued_disk_bytes: 262144000;
max_queued_disk_bytes_low_watermark: 131072000;
optimize_hashing_for_speed = true;
read_cache_line_size = 512;
request_timeout = 10;
peer_timeout = 20;
seed_choking_algorithm: 1;
send_buffer_low_watermark: 13107200;
send_buffer_watermark: 26214400;
send_buffer_watermark_factor: 250;
strict_end_game_mode: false;
use_parole_mode: false;
use_read_cache = true;
write_cache_line_size = 512;