> On Thu, May 28, 2009 at 03:12:55PM -0700, Allen Fowler scratched on the > wall: >> >> > just for anybody who is interested: >> >> > >> > I translated Jim's function into window code and added >> > a page of 1024 that will be written, instead of a single byte. >> > On my Win-XP system I got 55 TPS, much faster than sqlite >> > seems to write a page but that might be related to the >> > additional overhead sqlite needs to do.
just to add: I traced a little what sqlite does when an simple UPDATE is done within a transaction: It does two syncs on the journal file and one final sync on the db itselve, so achieving something like 15 TPS is reasonable. >> > >> > This brings me to a nice to have feature request: >> > How about adding similar test function in the sqlite API ? >> > This might use the vfs to write pages and gives some feedback >> > on the performance of the system where sqlite runs on. >> > It might also detect problems with the commit function... >> > Just an idea... >> > >> >> Interesting idea. > > It would make a lot more sense to make this an external utility > or an extension of the sqlite3 shell. Adding it to the core library > is a definite case of code bloat. Adding it into the API would allow my application to easily make the test for example the first time it runs on a system. But maybe a problem for the users that apply a sqlite wrapper. However, having it in sqlite3 shell would be very useful as well. Marcus > > Actually, a whole suite of performance related tests might be > interesting. > > -j > > -- > Jay A. Kreibich < J A Y @ K R E I B I.C H > > > "Our opponent is an alien starship packed with atomic bombs. We have > a protractor." "I'll go home and see if I can scrounge up a ruler > and a piece of string." --from Anathem by Neal Stephenson > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
