Re: [HACKERS] All things equal, we are still alot slower then MySQL?
От | Bruce Momjian |
---|---|
Тема | Re: [HACKERS] All things equal, we are still alot slower then MySQL? |
Дата | |
Msg-id | 199909200406.AAA06875@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: [HACKERS] All things equal, we are still alot slower then MySQL? (Michael Robinson <robinson@netrinsics.com>) |
Список | pgsql-hackers |
> Tom Lane <tgl@sss.pgh.pa.us> writes: > >>>> MySQL: 0.498u 0.150s 0:02.50 25.6% 10+1652k 0+0io 0pf+0w > >>>> PgSQL: 0.494u 0.061s 0:19.78 2.7% 10+1532k 0+0io 0pf+0w > > > >> No --- if he were, it'd be all CPU time, not 2.7% CPU usage. > > > >Er, wait a second. Are we measuring backend-process runtime here, > >or is that the result of 'time' applied to a *client* ? > > Yeah, that would explain a lot. When I first saw the numbers, I was so > excited because they showed that PostgreSQL is *faster* than MySQL (with > more memory, and better I/O). > > That didn't make any sense, though. MySQL is faster than every real DBMS, > because it doesn't have transactions, triggers, locking, or any other sort > of useful features to slow it down. > > The question should always be, is PostgreSQL faster than Oracle, Informix, > or Sybase? I am told we are the same as Ingres, and slower than Oracle with no -F, and faster than Oracle with -F. -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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