Re: [HACKERS] Timing of 'SELECT 1'

2004-03-13 Thread Bruce Momjian
Merlin Moncure wrote: The problem with gprof is that I am going to see all the backend startup stuff too, no? Is there a way to get a dump just the run of the query? I was sort of lurking on this thread, waiting to see what became of it. Did nobody actually come to a conclusion

Re: [HACKERS] Timing of 'SELECT 1'

2004-03-12 Thread Alex J. Avriette
On Wed, Mar 10, 2004 at 11:43:48AM -0500, Bruce Momjian wrote: The problem with gprof is that I am going to see all the backend startup stuff too, no? Is there a way to get a dump just the run of the query? I was sort of lurking on this thread, waiting to see what became of it. Did nobody

Re: [HACKERS] Timing of 'SELECT 1'

2004-03-12 Thread Merlin Moncure
The problem with gprof is that I am going to see all the backend startup stuff too, no? Is there a way to get a dump just the run of the query? I was sort of lurking on this thread, waiting to see what became of it. Did nobody actually come to a conclusion on what that last msec was

Re: [HACKERS] Timing of 'SELECT 1'

2004-03-10 Thread Merlin Moncure
Bruce Momjian wrote: I am timing small queries, and found that a PREPARE/EXECUTE of SELECT 1 takes about 1.2ms on my machine. A normal SELECT doesn't take much longer, so I am wondering why a simpler query isn't faster. Looking at log_executor_stats, I see the following. Execute shows

Re: [HACKERS] Timing of 'SELECT 1'

2004-03-10 Thread Bruce Momjian
Neil Conway wrote: Bruce Momjian [EMAIL PROTECTED] writes: I am timing small queries, and found that a PREPARE/EXECUTE of SELECT 1 takes about 1.2ms on my machine. A normal SELECT doesn't take much longer, so I am wondering why a simpler query isn't faster. log_executor_stats output

Re: [HACKERS] Timing of 'SELECT 1'

2004-03-10 Thread Bruce Momjian
Merlin Moncure wrote: Bruce Momjian wrote: I am timing small queries, and found that a PREPARE/EXECUTE of SELECT 1 takes about 1.2ms on my machine. A normal SELECT doesn't take much longer, so I am wondering why a simpler query isn't faster. Looking at log_executor_stats, I see the

Re: [HACKERS] Timing of 'SELECT 1'

2004-03-10 Thread Bruce Momjian
Tom Lane wrote: Bruce Momjian [EMAIL PROTECTED] writes: I am timing small queries, and found that a PREPARE/EXECUTE of SELECT 1 takes about 1.2ms on my machine. A normal SELECT doesn't take much longer, so I am wondering why a simpler query isn't faster. Define normal SELECT. I can

Re: [HACKERS] Timing of 'SELECT 1'

2004-03-10 Thread Bruce Momjian
Andreas Pflug wrote: Bruce Momjian wrote: There seems to be a 'PostgreSQL ping' time of about 1-2 ms in best case conditions which limits the amount of queries you can fire off in 1 second, no matter how simple. In certain rare cases this is something of a bottleneck. In my personal case

Re: [HACKERS] Timing of 'SELECT 1'

2004-03-10 Thread Hannu Krosing
Merlin Moncure kirjutas K, 10.03.2004 kell 17:00: Bruce Momjian wrote: I am timing small queries, and found that a PREPARE/EXECUTE of SELECT 1 takes about 1.2ms on my machine. A normal SELECT doesn't take much longer, so I am wondering why a simpler query isn't faster. Looking at

Re: [HACKERS] Timing of 'SELECT 1'

2004-03-10 Thread Tom Lane
Kurt Roeckx [EMAIL PROTECTED] writes: If I do a query on localhost with lots of data, I get a small time in the log, if I do it over a slow link the time get higher. It changes from 1 second to 2 minutes or something. So I think it's until the client has received the data. It'll at least be

[HACKERS] Timing of 'SELECT 1'

2004-03-09 Thread Bruce Momjian
I am timing small queries, and found that a PREPARE/EXECUTE of SELECT 1 takes about 1.2ms on my machine. A normal SELECT doesn't take much longer, so I am wondering why a simpler query isn't faster. Looking at log_executor_stats, I see the following. Execute shows nothing taking much time,

Re: [HACKERS] Timing of 'SELECT 1'

2004-03-09 Thread Tom Lane
Bruce Momjian [EMAIL PROTECTED] writes: I am timing small queries, and found that a PREPARE/EXECUTE of SELECT 1 takes about 1.2ms on my machine. A normal SELECT doesn't take much longer, so I am wondering why a simpler query isn't faster. Define normal SELECT. I can think of plenty of people