Dropped TCP packets maybe? I've heard the retransmit timeout is about 200 ms. I think you can get retransmit counts from the kernel with netstat.
--David Erik Frey wrote: > Hi All, > > I'm trying to use thrift in a low-latency scenario. Even at low loads > (just a > few hundred requests a second) occasionally (a few times a second) a round > trip from the client to the server takes 250 milliseconds. I'm using the > default TSocket settings, so it's probably not nodelay, and I'm using > TNonblockingServer, using 20080411p1 from the web site. > > Just curious if anyone's seen this before? > > Interestingly, when I measure the round trip time on the server end > (inserting > timing code before and after processor->process(in, out)), it's what I would > expect. The delay seems to be on the client side. > > Erik >
