[GRASS5] Driver Update

[Glynn Clements]

Glynn Clements wrote:

> I suspect that I may have over-simplified some aspect; I'll re-examine
> anything which could change the timing aspects of the I/O.

Doh. select() was being called with a zero timeout, i.e. a busy-wait. 
The end result: XDRIVER and the X server end up sharing all of the
available CPU time amongst themselves. With the attached patch (about
to be commited), the system remains 98% idle.

-- 
Glynn Clements <glynn.clements at virgin.net>

-------------- next part --------------
--- src/display/devices/lib/connect_sock.c~	Fri Apr 20 16:23:11 2001
+++ src/display/devices/lib/connect_sock.c	Mon Apr 23 20:06:39 2001
@@ -26,7 +26,7 @@
 	struct timeval tv;
 
 	tv.tv_sec = 0;
-	tv.tv_usec = 0;
+	tv.tv_usec = 10000;
 
 	FD_ZERO(&waitset);
 	FD_SET(listenfd, &waitset);