here are the results:
OS |Average latency|average min lifetime
tb.lin.2.1.su.out: 15429.88 43262.35
tb.lin.2.1smp.out: 24820.78 73181.09
tb.lin.su.out: 36952.43 47082.92
tb.be.out: 97613.29 133678.29
tb.nt.cgw32.out: 150206.23 194500.16
tb.nt.out: 146374.37 177591.14
(solaris was left out because I did it on a pII 400)
these are in clock ticks of an AMD k6-233. all the benchmark did was create a
thread and wait for it to finnish, all the thread did was record the value
of the tsc register.
this is not a good overall benchmark but you can see that the smp kernel can't
schedule thread creation and deletion as well as NON-SMP.
couldn't you use an initrd image to select between two different kernels?
cheers, Angus.
It would seem that Christopher McCrory (chrismcc@netus.com) said:
> Sorry if this has been covered before. What are the preformance
> implications of compiling a SMP kernel and running it on a UP machine?
> Will that slow performance? The reason I ask is that I have a mixed bag
> of SMP and UP servers. They all run the same hardware otherwise
> (Adaptec scsi, 3com). Compiling one kernel and then distributing it
> would make administration much easier.
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