TPC (was Great Bridge benchmark results for Postgres, 4 others)
От | Alex Pilosov |
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Тема | TPC (was Great Bridge benchmark results for Postgres, 4 others) |
Дата | |
Msg-id | Pine.BSO.4.10.10008142355580.1967-100000@spider.pilosoft.com обсуждение исходный текст |
Ответ на | Re: Great Bridge benchmark results for Postgres, 4 others (Ned Lilly <ned@greatbridge.com>) |
Список | pgsql-general |
A more interesting benchmark would be to compare TPC/C results on same kind of hardware other vendors use for THEIR TPC benchmarks, which are posted on tpc.org, as well as comparing price/performance of each. TPC as run by company 'commissioned by GB' cannot be validated and accepted into TPC database, they must be run under close supervision by TPC-approved monitors. I hope GB actually springs for the price of running the REAL TPC benchmark (last I heard it was around 25k$). To see how postgres performs on low-end (for TPC low-end is <8 processors) would be interesting to say the least. A problem with a real TPC is the strong suggestion to run a transaction manager, to improve speed. No transaction manager supports postgres yet. Another note on TPC is that they require to include as a final price support contract, on which GreatBridge should be able to compete. On Mon, 14 Aug 2000, Ned Lilly wrote: > Marc's right... we opted for ODBC to ensure as much of an "apples to apples" > comparison as possible. Of the 5 databases we tested, a native driver existed for > only the two (ahem) unnamed proprietary products - Postgres, Interbase, and MySQL > had to rely on ODBC. So we used the vendor's own ODBC for each of the other two > cases. > > <disclaimer> > As with all benchmarks, your mileage will vary according to hardware, OS, and of > course the specific application. What we attempted to do here was use two > industry-standard benchmarks and treat all five products the same. > </disclaimer> > > Presumably, if the vendor had taken the time to write a native driver for > Postgres, the results would have seen an even bigger kick. We don't have any > reason to think that the results for all five tests in native driver mode would be > out of proportion to the results we got through ODBC. > > Regards, > Ned > > > The Hermit Hacker wrote: > > > On Mon, 14 Aug 2000, Steve Wolfe wrote: > > > > > > 1) Using only ODBC drivers. I don't know how much of an impact a driver > > > can > > > > make but it would seem that using native drivers would shutdown one source > > > > of objections. > > > > > > Using ODBC is guaranteed to slow down the benchmark. I've seen native > > > database drivers beat ODBC by anywhere from a factor of two to an order of > > > magnitude. > > > > I haven't had a chance to take a look at the benchmarks yet, having just > > seen this, but *if* Great Bridge performed their benchmarks such that all > > the databases were access via ODBC, then they are using an > > 'apples-to-apples' approach, as each will have similar slowdowns as a > > result ... > >
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