From: Jeff D. <jd...@ka...> - 2002-01-25 04:07:05
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te...@ab... said: > Bottom line, the UML compilation was about half as fast as on the real > machine. That's in line with my experience doing kernel builds in UML. As a side note, for some reason, mounting tmpfs on /tmp (where UML creates some files that it mmaps) provides a ~2x performance increase. A kernel build went from ~18 minutes with ext2 /tmp to ~8 minutes with tmpfs /tmp. to...@to... said: > faster than the "Calibrating delay loop... 25.96 BogoMIPS" line gives > the impression the uml is. No one should use BogoMips as a measurement of performance on any machine, let alone UML. The "Bogo" is there for a reason. As it happens, the UML BogoMips calculation is broken in some way that I haven't bothered tracking down. It should be basically identical to the host because it does exactly the same thing as the host. Jeff |