Unix域的套接字在Solaris 10上比在Linux上慢100倍？

I am benchmarking local socket performance on Linux and Solaris for a project. For some reason I cannot find out, performance on Solaris is roughly 100x worse than on Linux. In Linux, opening a socket, exchanging one very short (2 char) message each way and closing it takes about 10us elapsed time. On Solaris, the same thing takes about 1000us. I am benchmarking local socket performance on L