[
https://issues.apache.org/jira/browse/SSHD-1135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17293009#comment-17293009
]
Lyor Goldstein commented on SSHD-1135:
--------------------------------------
{quote}Once a socket has either been accepted or connected, the socket is
registered with a transfer thread
{quote}
I think this is incorrect - the socket is not registered with any specific
thread. There is a pool of thread along with an _Executor_ that assigns a
thread from it to serve a socket when data is detected on it. On the data has
been handled, the thread returns to the pool and is ready to serve some (maybe)
other socket.
{quote}I know if we use socketImplementation default (NIO2) there is a
configuration value called nio-workers. Will it serve our purpose?
{quote}
If I understand correctly the question then yes...
{quote}And if so what are the upper boundary limits for the value nio-worker
(Property.integer("nio-workers", Runtime.getRuntime().availableProcessors() +
X)
{quote}
Something like that, although difficult to say how large _X_ should be. While
the threads are mostly stuck on I/O to/from the socket, if there are too many
of them then the context switching overhead becomes a factor. Also, it depends
a lot on the traffic - if it is light, then no need for many threads.
> Configurable sshd transfer threads
> ----------------------------------
>
> Key: SSHD-1135
> URL: https://issues.apache.org/jira/browse/SSHD-1135
> Project: MINA SSHD
> Issue Type: Question
> Reporter: Susmit Sarkar
> Priority: Critical
>
> Set the number of transfer threads. Once a socket has either been accepted or
> connected, the socket is registered with a transfer thread. This thread
> asynchronously performs all the IO for the socket. If all the permanent
> threads become fully loaded then additional threads will be created to handle
> additional connections and shutdown once they have no sockets to service.
>
> Is there any performance tuning parameter that we can use to leverage our
> above use case?
> I know if we use socketImplementation default (NIO2) there is a configuration
> value called {{nio-workers. Will it serve our purpose?}}
> And if so what are the upper boundary limits for the value nio-worker
>
> (Property.integer("nio-workers", Runtime.getRuntime().availableProcessors() +
> X)
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
