Ulrich Schwab wrote: > I saw some bad latency behaviour on a new system, it is a > P4 with ICH7 chipset. It showed more than 300 us max. latency without any > load. > This chipset was not detected as SMI generating and SMI disable was not done. > > Finally I figured out where to add this DEVICE_ID > to the SMI detection in smi.c > It is done in the attached patch. > > Now, the max. latency values on this new system are below 10 us. > Although, not tested very long.
...and not under load. ;) Thanks for the patch, we just need some additional define of PCI_DEVICE_ID_INTEL_ICH7_0 for kernel 2.4 compatibility. And if you additionally provide a ChangeLog fragment, your patch would be perfect! (I tend to forget the last part often too... :) ) Jan
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