Messages in this thread | | | Date | Thu, 23 Feb 2006 11:32:52 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: Patch to reorder functions in the vmlinux to a defined order |
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On Thu, 23 Feb 2006, linux-os (Dick Johnson) wrote: > > > > Does anybody want to run benchmarks? (Totally untested, may not boot, > > might physically accost your pets for all I know). > > > > Linus > > I just reconfigured and rebuilt linux-2.6.15.4 to put PHYSICAL_START > at 0x00400000, unconditionally and it booted fine and is working so > a 'boot' shouldn't be a problem.
I ended up doing even more.
For me, running lmbench with this, it seems to improve some things by up to 20% (pipe bandwidth and latency, small file delete), some other things by 10% (larger file delete), and others not at all.
Still, that 20% is _huge_.
HOWEVER. I didn't compare very strictly. I should have done many more runs (I only did three), and more importantly, I should have compared the exact same kernel (I compared the new results against a kernel that was a couple of weeks old, so there were other differences). So it's a bit suspect. Finally, it might depend on the core a lot, and other cores might not get the same results.
So somebody should do a much better test. I'm too lazy.
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