{"action":"created","comment":{"url":"https://api.github.com/repos/netty/netty/pulls/comments/42633482","id":42633482,"diff_hunk":"@@ -872,12 +893,94 @@ private AbstractWriteTask(Recycler.Handle handle) {\n             super(handle);\n         }\n \n+        private static int estimateSize(Object o, Map<Class<?>, Integer> classSizes) {\n+            if (o == null) {\n+                return 8;\n+            }\n+\n+            int answer = 8 + estimateSize(o.getClass(), classSizes, null);\n+\n+            if (o instanceof ByteBuf) {\n+                answer += ((ByteBuf) o).readableBytes();\n+            } else if (o instanceof ByteBufHolder) {\n+                answer += ((ByteBufHolder) o).content().readableBytes();\n+            } else if (o instanceof FileRegion) {\n+                answer += 0;\n+            } else if (o instanceof byte[]) {\n+                answer += ((byte[]) o).length;\n+            } else if (o instanceof ByteBuffer) {\n+                answer += ((ByteBuffer) o).remaining();\n+            } else if (o instanceof CharSequence) {\n+                answer += ((CharSequence) o).length() << 1;\n+            } else if (o instanceof Iterable<?>) {\n+                for (Object m : (Iterable<?>) o) {\n+                    answer += estimateSize(m, classSizes);\n+                }\n+            }\n+\n+            return align(answer);\n+        }\n+\n+        private static int estimateSize(Class<?> clazz, Map<Class<?>, Integer> classSizes,","path":"transport/src/main/java/io/netty/channel/AbstractChannelHandlerContext.java","position":118,"original_position":118,"commit_id":"d02deffcf8f3195201375f34616ab9c3c5091cd8","original_commit_id":"d02deffcf8f3195201375f34616ab9c3c5091cd8","user":{"login":"nmittler","id":6493296,"avatar_url":"https://avatars.githubusercontent.com/u/6493296?v=3","gravatar_id":"","url":"https://api.github.com/users/nmittler","html_url":"https://github.com/nmittler","followers_url":"https://api.github.com/users/nmittler/followers","following_url":"https://api.github.com/users/nmittler/following{/other_user}","gists_url":"https://api.github.com/users/nmittler/gists{/gist_id}","starred_url":"https://api.github.com/users/nmittler/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nmittler/subscriptions","organizations_url":"https://api.github.com/users/nmittler/orgs","repos_url":"https://api.github.com/users/nmittler/repos","events_url":"https://api.github.com/users/nmittler/events{/privacy}","received_events_url":"https://api.github.com/users/nmittler/received_events","type":"User","site_admin":false},"body":"Wondering if all of this reflection is going to prove to be a performance issue.  I'm guessing that the expectation here is that this is only done once per class type, so it doesn't matter?","created_at":"2015-10-21T14:51:21Z","updated_at":"2015-10-21T14:51:21Z","html_url":"https://github.com/netty/netty/pull/4380#discussion_r42633482","pull_request_url":"https://api.github.com/repos/netty/netty/pulls/4380","_links":{"self":{"href":"https://api.github.com/repos/netty/netty/pulls/comments/42633482"},"html":{"href":"https://github.com/netty/netty/pull/4380#discussion_r42633482"},"pull_request":{"href":"https://api.github.com/repos/netty/netty/pulls/4380"}}},"pull_request":{"url":"https://api.github.com/repos/netty/netty/pulls/4380","id":48322385,"html_url":"https://github.com/netty/netty/pull/4380","diff_url":"https://github.com/netty/netty/pull/4380.diff","patch_url":"https://github.com/netty/netty/pull/4380.patch","issue_url":"https://api.github.com/repos/netty/netty/issues/4380","number":4380,"state":"open","locked":false,"title":"[#4363] Improve size calculation of messages when written from outsid…","user":{"login":"normanmaurer","id":439362,"avatar_url":"https://avatars.githubusercontent.com/u/439362?v=3","gravatar_id":"","url":"https://api.github.com/users/normanmaurer","html_url":"https://github.com/normanmaurer","followers_url":"https://api.github.com/users/normanmaurer/followers","following_url":"https://api.github.com/users/normanmaurer/following{/other_user}","gists_url":"https://api.github.com/users/normanmaurer/gists{/gist_id}","starred_url":"https://api.github.com/users/normanmaurer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/normanmaurer/subscriptions","organizations_url":"https://api.github.com/users/normanmaurer/orgs","repos_url":"https://api.github.com/users/normanmaurer/repos","events_url":"https://api.github.com/users/normanmaurer/events{/privacy}","received_events_url":"https://api.github.com/users/normanmaurer/received_events","type":"User","site_admin":false},"body":"…e the EventLoop\r\n\r\nMotiviation:\r\n\r\nIf a user writes from outside the EventLoop we increase the pending bytes of the outbound buffer before submitting the write request. This is done so the user can stop writing asap once the channel turns unwritable. Unfortunally this doesn't take the overhead of adding the task into the account and so it is very easy for an user to full up the task queue. 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