Re[2]: Some more about mysql perfomance.

2001-04-09 Thread Michael Widenius
Hi! > "Peter" == Peter Zaitsev <[EMAIL PROTECTED]> writes: Peter> It's a pity what mysql misses something like PROFILE call for the Peter> query so I could check how much time is spent for different phases of Peter> query execution. MW> Any suggestions for the output for this? Peter> W

Re[2]: Some more about mysql perfomance.

2001-04-08 Thread Peter Zaitsev
Hello Michael, Sunday, April 08, 2001, 4:21:18 AM, you wrote: Peter>> No it's not but it has just a couple of collisions per 100.000 Peter>> records. MW> The problem with a not unique key is that MySQL will do an extra check MW> if it should use the key during the optimization stage. If the

Re[2]: Some more about mysql perfomance.

2001-04-07 Thread Peter Zaitsev
Hello Tim, Saturday, April 07, 2001, 3:21:52 AM, you wrote: >> The reason singly queries are slower are of course that the >> initialization phase (reading the data from a socket, parsing, >> locking, checking which keys to use) is about half of the query time. >> >> Peter> Heikki made tests