Re: [9fans] Standalone cpu/auth..

[rsc@plan9.bell-labs.com]

the drawterm sessions should be slower,
since they are going through srvold9p rather
than plugging the network connection
into the kernel directly.  it shouldn't be very
much slower, but perhaps a little.  if you're
comparing drawterm-linux->3e vs ->4e,
i don't think you should see a big difference.

if you're comparing drawterm-linux->3e with
drawterm-windows->4e, you will see a big difference.
repeating yesterday's theme, the 4e drawterm sources
from windows now disable nagle's algorithm,
which makes an enormous difference.

replace /sys/src/cmd/unix/drawterm/devip-unix.c:/^so_socket
with this one and recompile.  you should see a big
difference.

int
so_socket(int type)
{
	int fd, one;

	switch(type) {
	default:
		error("bad protocol type");
	case S_TCP:
		type = SOCK_STREAM;
		break;
	case S_UDP:
		type = SOCK_DGRAM;
		break;
	}

	fd = socket(AF_INET, type, 0);
	if(fd < 0)
		error(strerror(errno));

	one = 1;
	if(setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char*)&one, sizeof(one)) > 0)
		print("setsockopt: %s", sys_errlist[errno]);

	return fd;
}

russ