10 :Description: Disables nagle's algorithm on messenger tcp sessions.
16 ``ms initial backoff``
18 :Description: The initial time to wait before reconnecting on a fault.
26 :Description: The maximum time to wait before reconnecting on a fault.
34 :Description: Disables crc on network messages. May increase performance if cpu limited.
42 :Description: Debug option; do not configure.
48 ``ms dispatch throttle bytes``
50 :Description: Throttles total size of messages waiting to be dispatched.
51 :Type: 64-bit Unsigned Integer
53 :Default: ``100 << 20``
58 :Description: Enable if you want your daemons to bind to IPv6 address instead of IPv4 ones. (Not required if you specify a daemon or cluster IP.)
64 ``ms rwthread stack bytes``
66 :Description: Debug option for stack size; do not configure.
67 :Type: 64-bit Unsigned Integer
69 :Default: ``1024 << 10``
72 ``ms tcp read timeout``
74 :Description: Controls how long (in seconds) the messenger will wait before closing an idle connection.
75 :Type: 64-bit Unsigned Integer
80 ``ms inject socket failures``
82 :Description: Debug option; do not configure.
83 :Type: 64-bit Unsigned Integer
87 Async messenger options
88 =======================
91 ``ms async transport type``
93 :Description: Transport type used by Async Messenger. Can be ``posix``, ``dpdk``
94 or ``rdma``. Posix uses standard TCP/IP networking and is default.
95 Other transports may be experimental and support may be limited.
101 ``ms async op threads``
103 :Description: Initial number of worker threads used by each Async Messenger instance.
104 Should be at least equal to highest number of replicas, but you can
105 decrease it if you are low on CPU core count and/or you host a lot of
106 OSDs on single server.
107 :Type: 64-bit Unsigned Integer
112 ``ms async max op threads``
114 :Description: Maximum number of worker threads used by each Async Messenger instance.
115 Set to lower values when your machine has limited CPU count, and increase
116 when your CPUs are underutilized (i. e. one or more of CPUs are
117 constantly on 100% load during I/O operations).
118 :Type: 64-bit Unsigned Integer
123 ``ms async set affinity``
125 :Description: Set to true to bind Async Messenger workers to particular CPU cores.
131 ``ms async affinity cores``
133 :Description: When ``ms async set affinity`` is true, this string specifies how Async
134 Messenger workers are bound to CPU cores. For example, "0,2" will bind
135 workers #1 and #2 to CPU cores #0 and #2, respectively.
136 NOTE: when manually setting affinity, make sure to not assign workers to
137 processors that are virtual CPUs created as an effect of Hyperthreading
138 or similar technology, because they are slower than regular CPU cores.
141 :Default: ``(empty)``
144 ``ms async send inline``
146 :Description: Send messages directly from the thread that generated them instead of
147 queuing and sending from Async Messenger thread. This option is known
148 to decrease performance on systems with a lot of CPU cores, so it's