On Mon, 2011-10-31 at 17:02 +0000, andy pugh wrote: > On 31 October 2011 16:38, Leonardo Marsaglia > <[email protected]> wrote: > > Andy, I'm reading about the SMI patch right now. I installed a clean copy > > of the ubuntu 10.04 live cd with emc 2.4.3 and I really don't know if this > > one comes already patched > > No, because the SMI patch is dangerous, and is not something to be > installed by default. > > However, it makes my old dual Xeon box usable, and it hasn't caused > any obvious problems. > > It is easy to test, you just need to edit rtapi.conf as directed and > then try the latency test. It's probably a good idea to keep an eye on > CPU and peripheral chip temperatures though. >
On my KM400 motherboard, I tried on-board video, AGP cards, various drivers from nvidia to vesa. I went through BIOS settings, disabled ACPI(?), disabled power control, USB and other unused hardware. I checked loaded modules to see if any could be unloaded. I tried the SMI patch, but I get an error that the ...smi.ko could not be found, even though it is in the modules directory that matches uname -r. It is very unlikely that it is an SMI problem because the latency events are at a very high rate, so I didn't pursue fixing the error. All told, I didn't make a dent in the problem. The only difference between a very good latency and awful (10,000us and 240,000us) on this board is 8.04 and 10.04. I'm not sure were to go next. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ RSA® Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
