• Persistent connections
• persistent_connections_limit
• phrase_boundary
• phrase_boundary_step
• pid_file
• Plain log format
• plugin_dir
• predicted_time_costs
• prefix_fields
• prefork_rotation_throttle
• preopen
• preopen_indexes
• Query
• query_log
• query_log_format
• query_log_min_msec
• Querying
• Quick Sphinx usage tour
• Quick summary of the ranking factors
• Ranker plugins
• Ranking factor aggregation functions
• Ranking overview
• read_buffer
• read_timeout
• read_unhinted
• Real-time indexes
• regexp_filter
• REPLACE syntax
• Reporting bugs
• Required tools
• ResetFilters
• ResetGroupBy
• Restrictions on the source data
• Result set filtering settings
• rlp_context
• rlp_environment
• rlp_max_batch_docs
• rlp_max_batch_size
• rlp_root
• ROLLBACK syntax
• RT index internals
• RT indexes overview
• rt_attr_bigint
• rt_attr_bool
• rt_attr_float
• rt_attr_json
• rt_attr_multi
• rt_attr_multi_64
• rt_attr_string
• rt_attr_timestamp
• rt_attr_uint
• rt_field
• rt_flush_period
• rt_mem_limit
• rt_merge_iops
• rt_merge_maxiosize
• RunQueries
• seamless_rotate
• Search results ranking
• searchd command reference