Peter Rydesäter

I was able to achieve >512mbps (that's 0.5 gigabit/sec) of read or write by modifying pnet.c as follows, and recompiling the mex extention:

---- edit of pnet.c start here----------------
int tcp_connect(const char *hostname,const int port)
{
+ int optval;
+ int result=0;

    if(ipv4_lookup(hostname,port)==-1)
return -1;
    con[con_index].fid=socket(AF_INET, SOCK_STREAM, 0);

+ optval=1;
+ result = setsockopt(con[con_index].fid, +IPPROTO_TCP,TCP_NODELAY,(char *) &optval,sizeof(optval));
+ optval = 512*1024;
+ result = setsockopt(con[con_index].fid, SOL_SOCKET,SO_SNDBUF,(char *) &optval,sizeof(optval));
+ result = setsockopt(con[con_index].fid, SOL_SOCKET,SO_RCVBUF,(char *) &optval,sizeof(optval));

---- edit of pnet.c ends here----------------

 with the modified pnet, executing pnet read/write calls using a buffer of 512kbytes gave very high throughput.

Thank you very much peter , for contributing this and sharing
the source, it's been very useful.

Anyone have luck running this under MAC OS 10.6.2 Snow Leopard? It seems to put MATLAB in an infinite busy state.