+ [sahara] because they are primary consumer of the BDD. John, Thanks for the answer. My comments are inline.
Regards, Ivan Kolodyazhny, http://blog.e0ne.info/ On Mon, Sep 19, 2016 at 4:41 PM, John Griffith <john.griffi...@gmail.com> wrote: > > > On Mon, Sep 19, 2016 at 4:43 AM, Ivan Kolodyazhny <e...@e0ne.info> wrote: > >> Hi team, >> >> We did some performance tests [1] for LVM and BDD drivers. All tests were >> executed on real hardware with OpenStack Mitaka release. Unfortunately, we >> didn't have enough time to execute all tests and compare results. We used >> Sahara/Hadoop cluster with TestDFSIO and others tests. >> >> All tests were executed on the same hardware and OpenStack release. Only >> difference were in cinder.conf to enable needed backend and/or target >> driver. >> >> Tests were executed on following configurations: >> >> - LVM +TGT target >> - LVM+LocalTarget: PoC based on [2] spec >> - LVM+LIO >> - Block Device Driver. >> >> >> Feel free to ask question if any about our testing infrastructure, >> environment, etc. >> >> >> [1] https://docs.google.com/spreadsheets/d/1qS_ClylqdbtbrVSvwbbD >> pdWNf2lZPR_ndtW6n54GJX0/edit?usp=sharing >> [2] https://review.openstack.org/#/c/247880/ >> >> Regards, >> Ivan Kolodyazhny, >> http://blog.e0ne.info/ >> >> ____________________________________________________________ >> ______________ >> OpenStack Development Mailing List (not for usage questions) >> Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscrib >> e >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >> >> Thanks Ivan, so I'd like to propose we (the Cinder team) discuss a few > things (again): > > 1. Deprecate the BDD driver > Based on the data here LVM+LIO the delta in performance (with the > exception of the Terravalidate run against 3TB) doesn't seem significant > enough to warrant maintaining an additional driver that has only a subset > of features implemented. It would be good to understand why that > particular test has such a significant peformance gap. > What about Local Target? Does it make sense to implement it instead BDD? > > 2. Consider getting buy off to move the default implementation to use the > LIO driver and consider deprecating the TGT driver > +1. Let's bring this topic for the next weekly meeting. > > I realize this probably isn't a sufficient enough data set to make those > two decisions but I think it's at least enough to have a more informed > discussion this time. > > Thanks, > John > > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > >
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