Speed optimizations?
I saw it said on GW2 that server lag was mainly due to CPU load rather than too small a network pipe, so I spent some time looking at the server code to look for places to speed up the code. Without a profiler it's really hard to tell where the problem is, so I decided to simply poke around. My understanding is that there's a thread for each client that's connected to a zone server, and one or more threads that handle communication to and from the socket port.
I could be way off base, but one thing that really bothered me was all the memory allocations and deallocations. Though I had a real hard time finding a way to avoid this, one possibility might be in the EQNetworkPacket class. It seems that the data area is allocated to match the amount of bytes to be sent, but I'm wondering if it might be better to define it as a static array of 512 bytes (the maximum) instead. It sacrifices some memory, but that way the data area will be allocated along with the class and maybe it will save some time.
Another possibility (though you probably won't like this one) would be to make APPLAYER a struct instead of a class and preallocate the data area at the same time as the struct. You'd have to change all of its methods to procedures, but it would knock out half of the memory allocations and deallocations...
WC
|
Threaded Mode
