Dear everyone,
In my work, I encountered one problem. I used NIO in my Server code, the server need to communicate wtih 100 thousand devices. When all the 100 thousand deviced connected my server, the cpu rate of the computer deployed the Server code will come to 90%+. I found the cause is that Java NIO will start (total channels/1024) thread to handler the 100 thousand channels. Now, I want a way to solve this problem which the cpu rate is to high. The way I got is to extend the class[sun.nio.ch.SelectorImpl], but it's modifier is default. Than I try to modify the variable[MAX_SELECTABLE_FDS] in the class[sun.nio.ch.WindowsSelectorImpl], but it's modifier is 'private final static int'. Than I use reflection to modified it, but it does not work. Please provide me a way to decrease the thread numbers, or other way to reduce the cpu rate. Thank you very much. note: The compute deployed the code has 16 cpus.
