Bruce Momjian kirjutas E, 17.11.2003 kell 03:58: > > OK, let me give you my logic and you can tell me where I am wrong. > > First, how many backend can a single write process support if all the > backends are doing insert/update/deletes? 5? 10? Let's assume 10. > Second, once we change write to write/fsync, how much slower will that > be? 100x, 1000x? Let's say 10x. > > So, by my logic, if we have 100 backends all doing updates, we will need > 10 * 100 or 1000 writer processes or threads to keep up with that load. > That seems quite excessive to me from a context switching and process > overhead perspective. > > Where am I wrong?
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Maybe you meant 100/10 instead of 100*10 ;) ------------ Hannu ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings
