Messages in this thread | | | From | Con Kolivas <> | Subject | Re: [BENCHMARK] ext3, reiser, jfs, xfs effect on contest | Date | Sat, 1 Feb 2003 01:18:48 +1100 |
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On Saturday 01 Feb 2003 1:09 am, Mike A. Harris wrote: > On Sat, 1 Feb 2003, Con Kolivas wrote: > >Using the osdl hardware (http://www.osdl.org) with contest > >(http://contest.kolivas.net) I've conducted a set of benchmarks with > >different filesystems. Note that contest does not claim to be a throughput > >benchmark. > > > >All of these use kernel 2.5.59 > > > >First a set of contest benchmarks with the io load on a different hard > > disk containing each of the four filesystems: > > > >io_other: > >Kernel [runs] Time CPU% Loads LCPU% Ratio > >2559ext3 3 89 84.3 2 5.5 1.13 > >2559reiser 3 87 86.2 2 5.7 1.10 > >2559jfs 3 87 86.2 3 5.7 1.10 > >2559xfs 3 87 86.2 2 4.5 1.10 > > > >I found it interesting that there is virtually no difference in kernel > >compilation time with all fs. However jfs consistently wrote more during > > the io load than the other fs. > > > > > >This is a set of benchmarks with the kernel compilation and load all > > performed on each of the fs: > > Compilation is inherently CPU bound, not disk I/O bound, so > compiling the kernel (or anything for that matter) isn't going to > show any difference really because the CPU Mhz and L1/L2 cache > are the bottleneck.
When the io load is on another hard disk yes, however the results do show differences when the load is on the same hard disk - these are two different tests. There is more to kernel compilation than just cpu usage. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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