{"action":"created","comment":{"url":"https://api.github.com/repos/akka/akka/pulls/comments/53008386","id":53008386,"diff_hunk":"@@ -45,17 +45,22 @@ akka {\n       # this may cause an initial runtime overhead, but most of the time fusing is\n       # desirable since it reduces the number of Actors that are created.\n       auto-fusing = on\n-      \n+\n       # Those stream elements which have explicit buffers (like mapAsync, mapAsyncUnordered,\n       # buffer, flatMapMerge, Source.actorRef, Source.queue, etc.) will preallocate a fixed\n       # buffer upon stream materialization if the requested buffer size is less than this\n       # configuration parameter. The default is very high because failing early is better\n       # than failing under load.\n       #\n-      # Buffers sized larger than this will dynamically grow/shrink and consume more memory \n+      # Buffers sized larger than this will dynamically grow/shrink and consume more memory\n       # per element than the fixed size buffers.\n       max-fixed-buffer-size = 1000000000\n \n+      # Maximum number of sync messages that actor can process for stream to substream communication.","path":"akka-stream/src/main/resources/reference.conf","position":17,"original_position":17,"commit_id":"14fd7022cc679f43aa133d40ba9d752d9c255256","original_commit_id":"14fd7022cc679f43aa133d40ba9d752d9c255256","user":{"login":"viktorklang","id":10871,"avatar_url":"https://avatars.githubusercontent.com/u/10871?v=3","gravatar_id":"","url":"https://api.github.com/users/viktorklang","html_url":"https://github.com/viktorklang","followers_url":"https://api.github.com/users/viktorklang/followers","following_url":"https://api.github.com/users/viktorklang/following{/other_user}","gists_url":"https://api.github.com/users/viktorklang/gists{/gist_id}","starred_url":"https://api.github.com/users/viktorklang/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/viktorklang/subscriptions","organizations_url":"https://api.github.com/users/viktorklang/orgs","repos_url":"https://api.github.com/users/viktorklang/repos","events_url":"https://api.github.com/users/viktorklang/events{/privacy}","received_events_url":"https://api.github.com/users/viktorklang/received_events","type":"User","site_admin":false},"body":"Why not reuse the `throughput` (or derive from it) setting of the dispatcher?","created_at":"2016-02-16T13:19:27Z","updated_at":"2016-02-16T13:19:27Z","html_url":"https://github.com/akka/akka/pull/19701#discussion_r53008386","pull_request_url":"https://api.github.com/repos/akka/akka/pulls/19701","_links":{"self":{"href":"https://api.github.com/repos/akka/akka/pulls/comments/53008386"},"html":{"href":"https://github.com/akka/akka/pull/19701#discussion_r53008386"},"pull_request":{"href":"https://api.github.com/repos/akka/akka/pulls/19701"}}},"pull_request":{"url":"https://api.github.com/repos/akka/akka/pulls/19701","id":58526704,"html_url":"https://github.com/akka/akka/pull/19701","diff_url":"https://github.com/akka/akka/pull/19701.diff","patch_url":"https://github.com/akka/akka/pull/19701.patch","issue_url":"https://api.github.com/repos/akka/akka/issues/19701","number":19701,"state":"open","locked":false,"title":"=str #19299 Performance 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