Energy measurement can be carried out with a recording electric power meter provided the power otherwise consumed by the operating system and other programs can be controlled for. Total energy used by the computer during one trial is computed by the integral of the recorded power reading over the time of the experiment. Do you have a time recording power meter to connect between the computer and power source? A sensitive Coulomb counting power meter such as those used for characterizing batteries would be ideal. Often such meters will have a direct readout of the integrated energy in Joules or Watt Hours.
Considering how total energy of computation is entirely liberated as heat from the computer's electronics, another technique would be to put the computer inside a well insulated and air tight cabinet for which you've determined the specific heat of the system. Specific heat might be experimentally determined by measuring the temperature rise of the system relative to the energy expended from a precise energy standard. Such a standard is merely a carefully measured amount of pure chemicals which produce a well defined exothermic reaction that doesn't destroy the apparatus. Generally I would suggest finding a small DC powered single board computer which runs only the SQLite program during the experiment. That would eliminate controlling for energy use of programs and irrelevant system components like power supply, graphics card, and so on. You will also have to design your experiment around the choice for secondary storage. For example, a solid state disk will have different energy characteristics compared to a mechanical disk. Separating the factors of energy for storage versus energy from computation would be an important dimension for an energy study of DBMS's. Peter On Mon, Nov 20, 2017 at 2:54 PM, Ali Dorri <alidorri...@gmail.com> wrote: > Dear All, > > I am doing a research on the energy consumed by a query in SQLite. I have a > program which fills a database with blocks of data. Then, it attempts to > remove some data from the database. I don't know how to measure the energy > consumed from my host, i.e., my laptop which has both the SQLite and the > program, from the time I generated the query till the query is finished and > control returns back to my program. > > Any help is highly appreciated. > > Regards > Ali > _______________________________________________ > sqlite-users mailing list > sqlite-users@mailinglists.sqlite.org > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users > _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
