Am Montag 08 Februar 2010 17:04:44 schrieb Gregory Collins:
Hello all,
A friend and I are trying to benchmark some network server code which runs fine on my OSX laptop (~7500 req/s) but which is >10x slower on a much faster 8-core Xeon Linux box.
The profiling run on Linux looks like this:
individual inherited COST CENTRE MODULE no. entries %time %alloc %time %alloc
MAIN MAIN 1 0 95.7 0.2 100.0 100.0 ...
How should we interpret this result? MAIN doesn't seem to correspond to any user code so we're wondering where the time is going.
Insert lots of {-# SCC "foo" #-} pragmas (you did pass -auto-all on the command line when compiling?). You can't interpret a profile where almost everything is attributed to MAIN or main.
G.