On Wed, Oct 7, 2009 at 2:31 PM, Matthew Tippett <tippettm@xxxxxxxxx> wrote: > The benchmark used was the sqlite subtest in the phoronix test suite. > > My awareness and involvement is beyond "reading a magazine article", I can > elaborate if needed, but I don't believe it is necessary. > > Process for reproduction, assuming Karmic, > > # apt-get install phoronix-test-suite > > $ phoronix-test-suite benchmark sqlite > > Answer the questions (test-names, etc, etc), it will download sqlite, build > it and execute the test. By default the test runs three timesand averages > the results. The results experienced should be similar to the values > identified at > > http://www.phoronix.com/scan.php?page=article&item=linux_2631_kvm&num=3 > > Which is approximately 12 minutes for the native, and about 60 seconds for > the guest. I have tried this, exactly as you have described. The tests took: * 1162.08033204 seconds on native hardware * 2306.68306303 seconds in a kvm using if=scsi disk * 405.382308006 seconds in a kvm using if=virtio I am using an up-to-date Karmic amd64 system, running qemu-kvm-0.11.0, on a Thinkpad x200, dual 2.4GHz, 4GB, and a somewhat slow 5400rpm SATA disk. The filesystem is ext4 in both the guest and the host. So I'm not seeing a 10x or order-of-magnitude improvement by doing this in the guest. With a scsi interface, it's twice as slow. With virtio, it's a good bit faster, but not 10x faster. That said, I don't know that I'm all that concerned about this, right now. I haven't looked in detail at what this test from phoronix is actually doing (nor do I really have the time to do so). Sorry. :-Dustin -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
