Messaging¶

General Settings¶

ms_tcp_nodelay

ms_initial_backoff

ms_max_backoff

ms_nocrc

Description: Disables CRC on network messages. May increase performance if CPU limited.
Type: Boolean
Required: No
Default: false

ms_die_on_bad_msg

ms_dispatch_throttle_bytes

ms_bind_ipv6

Description: Enable to bind daemons to IPv6 addresses instead of IPv4. Not required if you specify a daemon or cluster IP.
Type: Boolean
Required: No
Default: false

ms_rwthread_stack_bytes

ms_tcp_read_timeout

Description: Controls how long (in seconds) the messenger will wait before closing an idle connection.
Type: 64-bit Unsigned Integer
Required: No
Default: 900

ms_inject_socket_failures

ms_async_transport_type

Description: Transport type used by Async Messenger. Can be posix, dpdk or rdma. Posix uses standard TCP/IP networking and is default. Other transports may be experimental and support may be limited.
Type: String
Required: No
Default: posix

ms_async_op_threads

Description: Initial number of worker threads used by each Async Messenger instance. Should be at least equal to highest number of replicas, but you can decrease it if you are low on CPU core count and/or you host a lot of OSDs on single server.
Type: 64-bit Unsigned Integer
Required: No
Default: 3

ms_async_max_op_threads

Description: Maximum number of worker threads used by each Async Messenger instance. Set to lower values when your machine has limited CPU count, and increase when your CPUs are underutilized (i. e. one or more of CPUs are constantly on 100% load during I/O operations).
Type: 64-bit Unsigned Integer
Required: No
Default: 5

ms_async_send_inline

Description: Send messages directly from the thread that generated them instead of queuing and sending from Async Messenger thread. This option is known to decrease performance on systems with a lot of CPU cores, so it’s disabled by default.
Type: Boolean
Required: No
Default: false