Ceph消息配置.md

Ceph 消息配置

官方文档：https://ceph.readthedocs.io/en/latest/rados/configuration/ms-ref/

一般配置

ms tcp nodelay

• Description

  Disables nagle’s algorithm on messenger tcp sessions.

• Type：Boolean

• Required：No

• Default：true

ms initial backoff

• Description

  The initial time to wait before reconnecting on a fault.

• Type：Double

• Required：No

• Default：.2

ms max backoff

• Description

  The maximum time to wait before reconnecting on a fault.

• Type：Double

• Required：No

• Default：15.0

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

• Description

  Debug option; do not configure.

• Type：Boolean

• Required：No

• Default：false

ms dispatch throttle bytes

• Description

  Throttles total size of messages waiting to be dispatched.

• Type：64-bit Unsigned Integer

• Required：No

• Default：100 << 20

ms bind ipv6

• 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.)

• Type：Boolean

• Required：No

• Default：false

ms rwthread stack bytes

• Description

  Debug option for stack size; do not configure.

• Type：64-bit Unsigned Integer

• Required：No

• Default：1024 << 10

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

• Description

  Debug option; do not configure.

• Type：64-bit Unsigned Integer

• Required：No

• Default：0

异步消息配置

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